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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C., 20549

FORM 10-K

For the fiscal year ended December 31, 2012

Commission File Number: 000-51902

INFUSYSTEM HOLDINGS, INC.

(Exact Name of Registrant as Specified in its Charter)

31700 Research Park Drive

Madison Heights, Michigan 48071

(Address of Principal Executive Offices) (Zip Code)

Registrant’s Telephone Number, including Area Code:

(248) 291-1210

Securities Registered Pursuant to Section 12(b) of the Act:

Securities Registered Pursuant to Section 12(g) of the Act:

None

(Title of Class)

Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act.    YES  ¨    NO  x

Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act.    YES  ¨    NO  x

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter periods as the registrant was required to file such reports) and (2) has been subject to such filing requirements for the past 90 days.    YES  x    NO  ¨

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Website, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).    YES  x    NO  ¨

Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K is not contained herein, and will not be contained, to the best of registrant’s knowledge, in definitive proxy or information statements incorporated by reference in Part III of this Form 10-K or any amendment to this Form 10-K.  ¨

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company. See the definitions of “large accelerated filer,” “accelerated filer” and “smaller reporting company” in Rule 12b-2 of the Exchange Act. (check one)

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Act).    YES  ¨    NO  x

The aggregate market value of the registrant’s voting equity held by non-affiliates of the registrant, computed by reference to the price at which the common stock was last sold as of the last business day of the registrant’s most recently completed second fiscal quarter, was $35,262,609. In determining the market value of the voting equity held by non-affiliates, securities of the registrant beneficially owned by directors and officers of the registrant have been excluded. This determination of affiliate status is not necessarily a conclusive determination for other purposes. The number of shares of the registrant’s common stock outstanding as of February 27, 2013 was 21,990,000.

DOCUMENTS INCORPORATED BY REFERENCE

Portions of this registrant’s definitive proxy statement for its 2013 Annual Meeting of Stockholders to be filed with the SEC no later than 120 days after the end of the registrant’s fiscal year are incorporated herein by reference in Part III of this Annual Report on Form 10-K.

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Cautionary Statement about Forward-Looking Statements

This Annual Report on Form 10-K includes forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended (the “Securities Act”) and Section 21E of the Securities Exchange Act of 1934, as amended (the “Exchange Act”). All statements other than statements of historical facts contained in this Annual Report on Form 10-K, including statements regarding the future financial position, business strategy, plans, and objectives of management for future operations, are forward-looking statements. The words “believe,” “may,” “will,” “estimate,” “continue,” “anticipate,” “intend,” “should,” “plan,” “expect,” and similar expressions, as they relate to us, are intended to identify forward-looking statements. We have based these forward-looking statements largely on current expectations and projections about future events and financial trends that we believe may affect financial condition, results of operations, business strategy and financial needs. These forward-looking statements are subject to a number of risks, uncertainties and assumptions, including, without limitation, those described in “Risk Factors” and elsewhere in this Annual Report on Form 10-K, including, among other things:

These risks are not exhaustive. Other sections of this Annual Report on Form 10-K include additional factors which could adversely impact our business and financial performance. Moreover, we operate in a very competitive and rapidly changing environment. New risk factors emerge from time to time and it is not possible for us to predict all risk factors, nor can we assess the impact of all factors on our business or the extent to which any factor, or combination of factors, may cause actual results to differ materially from those contained in any forward-looking statements.

You should not rely upon forward-looking statements as predictions of future events. We cannot assure you that the events and circumstances reflected in the forward-looking statements will be achieved or occur. Although we believe that the expectations reflected in the forward looking-statements are reasonable, we cannot guarantee future results, levels of activity, performance or achievements.

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PART I

References in this Annual Report on Form 10-K to “we,” “us,” or the “Company” are to InfuSystem Holdings, Inc. (“InfuSystem”) and our wholly owned subsidiaries.

Background

InfuSystem Holdings, Inc. is a Delaware corporation, formed in 2005. It operates through operating subsidiaries, including InfuSystem, Inc., a California corporation (“InfuSystem”) and First Biomedical, Inc., a Kansas corporation (“First Biomedical”).

Business Concept and Strategy

We are a leading provider of infusion pumps and related services in the United States. We provide our services to hospitals, oncology practices and facilities and other alternate site health care providers. Headquartered in Madison Heights, Michigan, we deliver local, field-based customer support, and also operate pump service and repair Centers of Excellence in Michigan, Kansas, California, and Ontario, Canada.

Our core service is to supply electronic ambulatory infusion pumps and associated disposable supply kits to oncology clinics, infusion clinics and hospital outpatient chemotherapy clinics to be utilized in the treatment of a variety of cancers including colorectal cancer. Colorectal cancer is the third most prevalent form of cancer in the United States, according to the American Cancer Society, and the standard of care for the treatment of colorectal cancer relies upon continuous chemotherapy infusions delivered via electronic ambulatory infusion pumps.

We provide these pumps and related supplies to oncology clinics, obtain an assignment of insurance benefits from the patient, and bill the patient’s insurance company or patient as appropriate, for the use of the pump and supplies, and collect payment. We also provide pump management services for the pumps and associated disposable supply kits to approximately 1,600 oncology clinics in the United States, while retaining title to the pumps during this process.

In addition, we sell, rent and lease new and pre-owned pole mounted and ambulatory infusion pumps to oncology practices and provide biomedical certification, maintenance and repair services for these same oncology practices as well as to other alternate site settings including home care and home infusion providers, skilled nursing facilities, pain centers and others in the United States and Canada. We also provide these products and services to customers in the hospital market.

One aspect of our business strategy is to expand into treatment of other cancers. We currently generate approximately 30% of our revenue from treatments for disease states other than colorectal cancer. There are a number of approved treatment regimens for head and neck, pancreatic, esophageal and other gastric cancers which present opportunities for growth. There are also a number of other drugs currently approved by the U.S. Food and Drug Administration (the “FDA”), as well as agents in the pharmaceutical development pipeline, which we believe could potentially be used with continuous infusion protocols for the treatment of diseases other than colorectal cancer. Drugs or protocols currently in clinical trials may also obtain regulatory approval over the next several years. If these new drugs obtain regulatory approval for use with continuous infusion protocols, we expect the pharmaceutical companies to focus their sales and marketing efforts on promoting the new drugs and protocols to physicians.

Another aspect of our business is to seek opportunities to leverage our extensive networks of oncology practices and insurers. This leverage may take the form of new products and/or services, strategic alliances, joint ventures and/or acquisitions, although the latter is greatly limited by our new credit agreement. With that in mind, we believe there are limited opportunities to acquire smaller, regional competitors that perform similar

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services to us but do not have the national market access, a network of third party payor contracts or operating economies of scale that we currently enjoy. We also plan to leverage our extensive networks of oncology practices and insurers by distributing complementary products and introducing key new services.

We face the risk that other competitors can provide the same services as we provide. That risk is currently mitigated by our existing third party payor contracts and economies of scale, which allow for predictable reimbursement and less costly purchase and management of the pumps, respectively. Additionally, we have already established a long standing relationship as a provider of pumps to approximately 1,600 oncology clinics in the United States. We believe that there are competitive barriers to entry against other suppliers with respect to these oncology clinics because we have an established national presence and more than 245 third party payor contracts in place covering approximately 222 million third party payor lives (i.e., persons enrolled in various managed care plans or commercial insurance carriers such as health maintenance organizations and preferred provider organizations) increasing the likelihood that we participate in the insurance networks of patients to whom physicians wish to refer an ambulatory infusion pump provider. Moreover, we have an available inventory of approximately 26,000 active ambulatory infusion pumps, which may allow us to be more responsive to the needs of physicians and patients than a new market entrant. We do not perform any research and development.

In view of the Company’s changing payor environment, we believe that focusing on operational efficiencies, improving liquidity, and strengthening the balance sheet by reducing debt will support the Company’s overall business strategy discussed above.

Continuous Infusion Therapy

Continuous infusion of chemotherapy involves the gradual administration of a drug via a small, lightweight, portable electronic infusion pump over a prolonged period of time, defined as greater than 8 hours, and up to 24 hours daily. A cancer patient can receive his or her medicine anywhere from 1 to 30 days per month depending on the chemotherapy regimen that is most appropriate to that individual’s health status and disease state. This may be followed by periods of rest and then repeated cycles with treatment goals of progression free disease survival. This drug administration method has replaced intravenous push or bolus administration in specific circumstances. The advantages of slow continuous low doses of certain drugs are well documented. Clinical studies support the use of continuous infusion chemotherapy for decreased toxicity without loss of anti-tumor efficacy. The 2010/2011 National Comprehensive Cancer Network (“NCCN”) Guidelines recommend the use of continuous infusion for treatment of numerous cancer diagnoses. We believe that the growth of continuous infusion therapy is driven by three factors: evidence of improved clinical outcomes; lower toxicity and side effects; and a favorable reimbursement environment.

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Services

Our core service is to provide oncology offices, infusion clinics and hospital out-patient chemotherapy clinics with ambulatory infusion pumps in addition to related supplies for patient use. We then directly bill and collect payment from payors and patients for the use of these pumps. We own approximately 26,000 ambulatory infusion pumps which are dedicated to this service offering. At any given time, it is estimated that approximately 90% of the pumps are in the possession of these facilities. The remainder of the pumps are either in transport for cleaning and calibration or in our facilities as reserves.

After a doctor determines that a patient is eligible for ambulatory infusion pump therapy, the doctor arranges for the patient to receive an infusion pump and provides the necessary chemotherapy drugs. The oncologist and nursing staff train the patient in the use of the pump and initiate service. The physician bills Medicare, Medicaid, third party payor companies (collectively “payors”) or patients for the physician’s professional services associated with initiating and supervising the infusion pump administration, as well as the supply of drugs. We directly bill payors for the use of the pump and related disposable supplies. Billing to payors requires coordination with patients and physicians who initiate the service, as physicians’ offices must provide us with appropriate paperwork (patient’s insurance information, physician’s order and an acknowledgement of benefits that shows receipt of equipment by the patient) in order for us to bill the payors.

In addition to providing high quality and convenient care, we believe that our business offers significant economic benefits for patients, providers and payors.

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Other services we offer include the sales, rental and leasing of pole mounted and ambulatory infusion pumps to oncology practices, hospitals and other clinical settings. We own a fleet of approximately 20,000 new and used pole mounted and ambulatory pumps, representing approximately 70 makes and models of equipment which are dedicated to these services. These pumps are available for daily, weekly, monthly or annual rental periods as well as for sale or lease.

In addition to sales, rental and leasing services, we also provide biomedical maintenance, repair and certification services for the devices we offer as well as for devices owned by customers but not acquired through InfuSystem. We operate pump service and repair Centers of Excellence across the United States and Canada and employ a staff of highly trained technicians to provide these services.

Relationships with Physician Offices

We have business relationships with clinical oncologists at approximately 1,600 oncology clinics. Though this represents a substantial number of the oncologists in the United States, we believe we can continue to expand our network to further penetrate the oncology market. Based on our retention rates and the positive results of our professional customer satisfaction research, we believe our relationships with physician offices are strong.

We believe that, in general, we do not compete directly with hospitals and physician offices to treat patients. Rather, by providing products and services to hospitals and physician offices and other care facilities and providers, we believe that we assist other providers in meeting increasing patient demand and manage institutional constraints on capital and manpower due to the nature of limited resources in hospitals and physician offices.

Employees

As of December 31, 2012, we had 206 employees, including 183 full-time employees and 23 part-time employees. None of our employees are unionized.

Material Suppliers

We supply a wide variety of pumps and associated equipment, as well as disposables and ancillary supplies. The majority of our pumps are electronic ambulatory pumps purchased from the following manufacturers, each of which supplies more than 10% of the ambulatory pumps purchased by us: Smiths Medical, Inc.; Hospira Worldwide, Inc.; and WalkMed Infusion, LLC (formerly known as McKinley Medical, LLC). There are supply agreements in place with all of these suppliers. All major purchases are handled pursuant to pricing agreements, which contain no material terms other than prices that are subject to change by the manufacturer. Certain “spot” purchases are made on the open market subject to individual negotiation.

Seasonality

Our business is not subject to seasonality.

Environmental Laws

We are required to comply with applicable federal, state and local environmental laws regulating the disposal of cleaning agents used in the process of cleaning our ambulatory infusion pumps, as well as the disposal of sharps and blood products used in connection with the pumps. We do not believe that compliance with such laws has a material effect on our business.

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Significant Customers

We have sought to establish contracts with as many third party payor organizations as commercially practicable, in an effort to ensure that reimbursement is not a significant obstacle for providers who recommend continuous infusion therapy and wish to utilize our services. A third party payor organization is a health care payor or a group of medical services payors that contracts to provide a wide variety of health care services to enrolled members through participating providers such as us. A payor is any entity that pays on behalf of a member patient.

We currently have contracts with more than 245 third party payor plans that cover approximately 222 million lives. Material terms of contracts with third party payor organizations are typically a set fee or rate, or discount from billed charges for equipment provided. The majority of these contracts generally provide for a term of one year, with automatic one-year renewals, unless we or the contracted payor do not wish to renew. Our largest contracted payor is Medicare, which accounted for approximately 31% of our gross billings for ambulatory infusion pump services for the year ended December 31, 2012. Our contracts with our next largest contracted payor in the aggregate accounted for approximately 18% of our gross billings for ambulatory infusion pump services for the year ended December 31, 2012. We also contract with various other third party payor organizations, commercial Medicare replacement plans, self-insured plans and numerous other insurance carriers. No individual payor, other than those listed above, accounts for greater than approximately 7% of our ambulatory infusion pump services gross billings.

On August 16, 2012, CMS announced the timetable for Competitive Bidding Round 1 Recompete (“RD1RC”) RD1RC, which includes a new product category for external infusion pumps and supplies affecting nine Metropolitan Statistical Areas (“MSAs”). As of the current schedule, any changes in reimbursement associated with RD1RC will not become effective until calendar year 2014. We submitted our bid in December 2012. Our current revenue directly associated with CMS in these MSAs currently approximates 1% of our total annual revenues. By 2016, CMS is scheduled to fully implement some form of competitive bidding.

On October 14, 2012, a major group of third party payors revised their claim processing guidelines that affected all DME providers. Prior to the change, DME providers were allowed to submit claims to their “home plan” and the claims were processed in-network. Since the change in guidelines, DME providers are now required to submit their claims to the payor in the state where services were initiated. If the DME provider is not a participating provider with that specific payor, the claim is treated out-of-network and the patient will incur higher costs. Therefore, we must collect a higher portion of reimbursement directly from patients, which creates an increased collection risk. This major payor’s association selected InfuSystem as a preferred provider, which will help us in securing contracts in areas currently out-of-network.

During the fourth quarter of 2012, a major group of third party payors revised their claim processing guidelines that affected all DME providers which pushed some of our claims from “in-network billed directly to a third-party payor” to “out-of-network billed directly to the patient” thereby increasing revenue based on the higher out-of-network rates. Conversely, collecting a higher portion of reimbursement directly from patients increases our bad debt expense in Selling, General and Administrative expenses.

Competitors

We believe that our competition is primarily composed of regional durable medical equipment (“DME”) providers, hospital-owned DME providers, physician providers and home care infusion providers. An estimate of the number of competitors is not known or reasonably available, due to the wide variety in type and size of the market participants described below. We are not aware of any industry reports with respect to the competitive market described below. The description of market segments and business activities within those market segments is based on our experiences in the industry.

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Regulation of Our Business

Our business is subject to certain regulations. Specifically, as a Medicare supplier of DME and related supplies, we must comply with Supplier Standards established by CMS regulating Medicare suppliers of DME and prosthetics, orthotics and supplies (“DMEPOS”). The DMEPOS Supplier Standards consist of 30 requirements that must be met in order for a DMEPOS supplier to be eligible to receive payment for a Medicare-covered item. Some of the more significant DMEPOS Supplier Standards require us to (i) advise Medicare beneficiaries of their option to purchase certain equipment, (ii) honor all warranties under state law and not charge Medicare beneficiaries for the repair or replacement of equipment or for services covered under warranty, (iii) permit CMS agents to conduct on-site inspections to ascertain compliance with the DMEPOS Supplier Standards, (iv) maintain liability insurance in prescribed amounts, (v) refrain from contacting Medicare beneficiaries by telephone, except in certain limited circumstances, (vi) answer questions and respond to complaints of beneficiaries regarding the supplied equipment, (vii) disclose the DMEPOS Supplier Standards to each Medicare beneficiary to whom we supply equipment, (viii) maintain a complaint resolution procedure and record certain information regarding each complaint, (ix) maintain accreditation from a CMS approved accreditation organization and (x) meet the surety bond requirements specified in 42 C.F.R. 424.57.

We are also subject to the provisions of the Health Insurance Portability and Accountability Act of 1996 (“HIPAA”), which are designed to protect the security and confidentiality of certain patient health information. Under HIPAA, we must provide patients access to certain records and must notify patients of our use of personal medical information and patient privacy rights. Moreover, HIPAA sets limits on how we may use individually identifiable health information and prohibits the use of patient information for marketing purposes. The adoption of the American Recovery and Reinvestment Act of 2009 (“ARRA”) includes a new breach notification requirement that applies to breaches of unsecured health information occurring on or after September 23, 2009.

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We are subject to regulation in the various states in which we operate. We believe we are in compliance with all such regulation.

The health care industry is undergoing fundamental changes resulting from political, economic and regulatory influences. In the U.S., comprehensive programs are under consideration that seek to, among other things, increase access to health care for the uninsured and control the escalation of health care expenditures within the economy. In 2010, federal legislation to reform the United States health care system was enacted into law. The legislation is far-reaching and is intended to expand access to health insurance coverage, improve quality and reduce costs over time. We expect the new law will impact various aspects of our business operations. However, it is unclear how the new law will impact reimbursement rates under the Medicare program. In addition, the new law imposes a 2.3% excise tax on medical devices scheduled to be implemented in 2013 that could apply to sales within the United States of a majority of our pump products that we purchase. Many of the details of the new law will be included in new and revised regulations, which have not yet been promulgated, and require additional guidance and specificity to be provided by the Department of Health and Human Services, Department of Labor and Department of the Treasury. Accordingly, while it is too early to understand and predict the ultimate impact of the new law on our business, the legislation could have a material effect on our business, cash flows, financial condition and results of operations.

Recent Events in Our Business

In February 2012, a concerned stockholder group (“Concerned Stockholder Group”) requested a special stockholders’ meeting (the “Special Meeting”) as described in the Company’s annual report on Form 10-K for the year ended December 31, 2011 (“2011 Form 10-K”).

On April 24, 2012 we reached an agreement (the “Settlement Agreement”) with the Concerned Stockholder Group, resulting in a series of changes to the Board and senior leadership. John Climaco, Charles Gillman, Ryan Morris, Dilip Singh and Joseph Whitters joined the Board, while Timothy Kopra, Pat LaVecchia, Sean McDevitt, Jean-Pierre Millon and John Voris (“Old Board Members”) resigned as directors of the Company. In addition, Mr. Singh was appointed the Interim CEO, and Mr. Morris was appointed Executive Chairman. On February 9, 2013, the Board announced the approval of a waiver of the application of the standstill provisions provided in Section 2.2 of the Settlement Agreement to Meson Capital Partners LP, Meson Capital Partners LLC and Mr. Morris.

Concurrent with and as a condition of the Settlement Agreement, on April 24, 2012, Mr. McDevitt entered into a consulting agreement with the Company under which he resigned as CEO of the Company and agreed to serve as a consultant until July 31, 2012. Under the consulting agreement, Mr. McDevitt received a consulting fee of $1.0 million, paid in shares of the Company’s common stock. Shares issued to Mr. McDevitt were issued from the Company’s 2007 Stock Incentive Plan, as amended (the “2007 Plan”), valued at the average closing price of a share on the NYSE-MKT on the five trading days preceding the date of such issuance and totaled 500 thousand.

Per the terms of the consulting agreement, Mr. McDevitt’s Share Award Agreement entered into on April 6, 2010 with the Company terminated, including the 2.0 million shares of common stock potentially issuable under such agreement. Approximately $6.0 million in unrecognized compensation expense associated with such shares will not be recognized by the Company in the future. As these shares were forfeited before the requisite service period for this award was rendered, previously recognized compensation expense of $1.3 million was reversed and recorded as a reduction of general and administrative expense during the three months ended June 30, 2012.

On November 30, 2012, the Company entered into a credit facility with Wells Fargo as Administrative Agent and PennantPark as Lenders replacing the Company’s Credit Agreement, dated as of June 15, 2010, as amended, with Bank of America, N.A. as Administrative Agent and Keybank National Association as Lender. The facility consisted of a $12.0 million Term Loan A (provided by Wells Fargo), a $14.5 million Term Loan B (provided by PennantPark) and a $10.0 million revolving credit facility, all of which mature on November 30,

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2016, collectively the (“Credit Facility”). Interest on the term loan is payable at the Company’s choice of LIBOR plus 7.25% (with a LIBOR floor of 2.0%) or the Wells Fargo prime rate plus 6.25% (with a prime rate floor of 3.0%). As of December 31, 2012, interest was payable at LIBOR plus 7.25%, which equaled 9.25%. Proceeds from the term loan were used for general corporate purposes as well as to repay the outstanding balance of the Company’s Bank of America credit agreement.

In addition, on January 3, 2013, the Company announced the appointment of Jan Skonieczny as Chief Operating Officer and the initiation of a search process for a permanent Chief Executive Officer (“CEO”) to replace the Company’s Interim CEO, Dilip Singh. As a result of that search, on March 14, 2013, the Company announced the Board had appointed Eric Steen, who has more than 30 years of medical device and pharmaceutical industry experience, as Chief Executive Officer, effective April 1, 2013. Dilip Singh, who has served as the Company’s Interim CEO since April 2012, will step down from that position on the same date.

Available Information

Our Internet address is www.infusystem.com. On this Web site, we post the following filings as soon as reasonably practicable after they are electronically filed with or furnished to the U.S. Securities and Exchange Commission (the “SEC”): our Annual Reports on Form 10-K; our Quarterly Reports on Form 10-Q; our Current Reports on Form 8-K; our proxy statements related to our annual stockholders’ meetings; and any amendments to those reports or statements. All such filings are available on our Web site free of charge. The content on our Web site is not incorporated by reference into this Annual Report on Form 10-K unless expressly noted.

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An investment in our securities involves a high degree of risk. You should consider carefully all of the material risks described below, together with the other information contained in this Annual Report on Form 10-K. If any of the following events occur, our business, financial condition, results of operations and cash flows may be materially adversely affected.

RISK FACTORS RELATING TO OUR BUSINESS AND THE INDUSTRY IN WHICH WE OPERATE

Our business is substantially dependent on third-party reimbursement. Any change in the overall health care reimbursement system may adversely impact our business.

Our revenues are substantially dependent on third-party reimbursement. We are paid directly by private insurers and governmental agencies, often on a fixed fee basis, for the use of continuous infusion equipment and related disposable supplies provided to patients. If the average fees allowable by private insurers or governmental agencies were reduced, the negative impact on revenues could have a material effect on our financial condition, results of operations and cash flows. Also, if amounts owed to us by patients and insurers are reduced or not paid on a timely basis, we may be required to increase our bad debt expense and/or decrease our revenues.

Changes in the health care reimbursement system often create financial incentives and disincentives that encourage or discourage the use of a particular type of product, therapy or clinical procedure. Market acceptance of continuous infusion therapy may be adversely affected by changes or trends within the health care reimbursement system. Changes to the health care reimbursement system that favor other technologies or treatment regimens that reduce reimbursements to providers or treatment facilities, including increasing competitive pressures from home health care and other companies that use our services, may adversely affect our ability to market our services profitably.

On August 16, 2012, the CMS announced the timetable for Competitive Bidding Round 1 Recompete (“RD1RC”), which includes a new product category for external infusion pumps and supplies affecting nine MSAs. As of the current schedule, any changes in reimbursement associated with RD1RC will not become effective until calendar year 2014. The Company submitted its bid in December 2012. The Company’s revenue directly associated with CMS in these MSA’s currently approximates 1% of the Company’s total annual revenue. By 2016, CMS is scheduled to fully implement some form of competitive bidding. The impact of this and RD1RC is not easily identifiable, is unclear at this time, and could, among many factors, significantly reduce revenue, negatively impact the Company’s market share and negatively impact business with the Company’s customers and other payors.

Our business may be adversely impacted by the recent sequestration signed into law in the United States.

On March 1, 2013, most agencies of the federal government automatically reduced their budgets according to an agreement made by Congress in 2012 known as “sequestration”. Originally devised as an incentive to force Congressional agreement on budget issues, the sequestration order was approved on March 1, 2013 by the President of the United States. In the absence of any bipartisan agreement in the government, these cuts will result in Medicare payments to health care providers, health care plans and drug plans being reduced by 2% starting April 1, 2013, according to CMS.

Concentration of customers may adversely impact our business.

A substantial portion of our contracted payor revenue has been dependent on one payor or a limited concentration of payors. In particular, Medicare represented approximately 31% of our gross billings for ambulatory infusion pump services for the year ended December 31, 2012 and accounted for 10% our consolidated accounts receivable at December 31, 2012. To the extent such dependency continues, significant fluctuations in revenues, results of operations and liquidity could arise if Medicare or any other significant contracted payor reduces its reimbursement for the services we provide.

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On October 14, 2012, a major group of third party payors revised their claim processing guidelines that affected all DME providers. Prior to the change, DME providers were allowed to submit claims to their “home plan” and the claims were processed in-network. Since the change in guidelines, DME providers are now required to submit their claims to the payor in the state where services were initiated. If the DME provider is not a participating provider with that specific payor, the claim is treated out-of-network and the patient will incur higher costs. Therefore, InfuSystem must collect a higher portion of reimbursement directly from patients which creates an increased collection risk. This major payor’s association selected InfuSystem as a preferred provider, which will help InfuSystem in securing contracts in areas currently out-of-network.

Increased focus on early detection and diagnostics may adversely affect our business.

An increased focus on lowering health care spending via improved diagnostic testing (i.e., defensive medicine) and patient monitoring could negatively affect our business. A large portion of our ambulatory infusion pumps are dedicated to a specific form of cancer (i.e., colorectal). As a result of rising health care costs, there may be a demand for more cost-effective approaches to disease management, specifically for colorectal cancer, as well as for emphasis on screening and accurate diagnostic testing to facilitate early detection of potentially costly, severe afflictions. Any change in the approach to treatment of colorectal cancer could have an adverse impact on our revenue.

If future clinical studies demonstrate that oral medications are as effective as or more effective than continuous infusion therapy, our business could be adversely affected.

Numerous clinical trials are currently ongoing, evaluating and comparing the therapeutic benefits of current continuous infusion-based regimens with various oral medication regimens. If these clinical trials demonstrate that oral medications provide equal or greater therapeutic benefits and/or demonstrate reduced side effects compared to prior oral medication regimens, our revenues and overall business could be materially and adversely affected. Additionally, if new oral medications are introduced to the market that are superior to existing oral therapies, physicians’ willingness to prescribe continuous infusion-based regimens could decline, which would adversely affect our financial condition, results of operations and cash flows.

We are dependent on our Medicare Supplier Number.

We are required to have a Medicare Supplier Number in order to bill Medicare for services provided to Medicare patients. Furthermore, all third party and Medicaid contracts require us to have a Medicare Supplier Number. In addition, we are required to comply with Medicare Supplier Standards in order to maintain such number. If we are unable to comply with the relevant standards, we could lose our Medicare Supplier Number. The loss of such identification number for any reason would prevent us from billing Medicare for patients who rely on Medicare to pay their medical expenses and, as a result, we would experience a decrease in our revenues. Without such a number, we would be unable to continue our various third party and Medicaid contracts. A significant portion of our revenue is dependent upon our Medicare Supplier Number.

The CMS issued a ruling that all DME providers must be accredited by a recognized accrediting entity. On February 17, 2009, we initially received accreditation from the Community Health Accreditation Program (“CHAP”), and we were recertified in February 2013, thus meeting this CMS requirement. If we lost our accredited status, our financial condition, revenues and results of operations would be materially and adversely affected.

Our success is impacted by the availability of the chemotherapy drugs that are used in our continuous infusion pump systems.

We primarily derive our revenue from the rental of ambulatory infusion pumps to oncology patients through physicians’ offices and chemotherapy clinics. A shortage in the availability of chemotherapy drugs that are used in the continuous infusion pump system could have a material effect on our financial condition, results of operations and cash flows.

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Global financial conditions may negatively impact our business, results of operations, financial condition and/or liquidity.

The recent global financial crisis affecting the banking system and financial markets, as well as the uncertainty in global economic conditions, have resulted in a significant tightening of credit markets, a low level of liquidity in financial markets and reduced corporate profits and capital spending. As a result, our customers (i.e., patients and payors) may face issues gaining timely access to sufficient credit, which could result in an impairment of their ability to make timely payments to us. In addition, the current global financial crisis could also adversely impact our suppliers’ ability to provide us with materials and components, either of which may negatively impact our financial condition, results of operations and cash flows. The financial crisis could also adversely impact our ability to access the financial markets.

Although we maintain allowances for doubtful accounts for estimated losses resulting from the inability of our customers to make required payments and such losses have historically been within our expectations and the provisions established, we cannot guarantee that we will continue to experience the same loss rates that we have in the past, especially given the current turmoil of the worldwide economy.

State licensure laws for DME suppliers are subject to change. If we fail to comply with any state laws, we will be unable to operate as a DME supplier in such state and our business operations will be adversely affected.

As a DME supplier operating in all 50 states of the United States, we are subject to each state’s licensure laws regulating DME suppliers. State licensure laws for DME suppliers are subject to change and we must ensure that we are continually in compliance with the laws of all 50 states. In the event that we fail to comply with any state’s laws governing the licensing of DME suppliers, we will be unable to operate as a DME supplier in such state until we regain compliance. We may also be subject to certain fines and/or penalties and our business operations could be adversely affected.

Our growth strategy includes expanding into treatment for cancers other than colorectal. There can be no assurance that continuous infusion-based regimens for these other cancers will become standards of care for large numbers of patients or that we will be successful in penetrating these different markets.

An aspect of our growth strategy is to expand into the treatment of other cancers, such as head, neck and gastric. Currently, relatively small percentages of these patients are treated with regimens that include continuous infusion therapy. That population will expand only if clinical trial results for new drugs and new combinations of drugs demonstrate superior outcomes for regimens that include continuous infusion therapy relative to alternatives. No assurances can be given that these new drugs and drug combinations will be approved or will prove superior to oral medication or other treatment alternatives. In addition, no assurances can be given that we will be able to penetrate successfully any new markets that may develop in the future or manage the growth in additional resources that would be required.

Our business may be subject to natural forces beyond our control.

Natural disasters, including hurricanes, earthquakes, floods and other unfavorable weather conditions, may affect our operations. Natural catastrophes may have a detrimental effect on our gross billings, preventing many patients from visiting a facility to obtain our ambulatory infusion pumps or receive treatment. Similarly, such events could impact key suppliers or vendors, disrupting the services or materials they provide us. The severity of these occurrences, should they ever occur, will determine the extent to which and if our business is materially and adversely affected.

The industry in which we operate is intensely competitive and changes rapidly. If we are unable to successfully compete with our competitors, our business operations may suffer.

The drug infusion industry is highly competitive. Some of our competitors and potential competitors have significantly greater resources than we do for research and development, marketing and sales. As a result, they may be better able to compete for market share, even in areas in which our services may be superior. The

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industry is subject to technological changes and such changes may put our current fleet of pumps at a competitive disadvantage. If we are unable to effectively compete in our market, our financial condition, results of operations and cash flows may materially suffer.

Our industry is dependent on regulatory guidelines that affect our billing practices. If our competitors do not comply with these regulatory guidelines, our business could be adversely affected.

Aggressive competitors may not fully comply with rules pertaining to documentation required by CMS and other payors for patient billing. Competitors who do not meet the same standards of compliance that we do with regards to billing regulations can, put us at a potential competitive disadvantage. We are a participating provider with Medicare and under contract with approximately 245 additional insurance plans, all of which have very stringent guidelines. If our competitors do not comply with these regulatory guidelines, our business could be adversely affected.

We rely on independent suppliers for our products. Any delay or disruption in the supply of products, particularly our supply of electronic ambulatory pumps, may negatively impact our operations.

Our infusion pumps are obtained from outside vendors. The majority of our new pumps are electronic ambulatory infusion pumps which are supplied to us by three major suppliers: Smiths Medical, Inc.; Hospira Worldwide, Inc.; and WalkMed Infusion, LLC (formerly known as McKinley Medical, LLC). The loss or disruption of our relationships with outside vendors could subject us to substantial delays in the delivery of pumps to customers. Significant delays in the delivery of pumps could result in possible cancellation of orders and the loss of customers. Our inability to provide pumps to meet delivery schedules could have a material adverse effect on our reputation in the industry, as well as our financial condition, results of operations and cash flows.

Although we do not manufacture the products we distribute, if one of the products distributed by us proves to be defective or is misused by a health care practitioner or patient, we may be subject to liability that could adversely affect our financial condition and results of operations.

Although we do not manufacture the pumps that we distribute, a defect in the design or manufacture of a pump distributed by us, or a failure of pumps distributed by us to perform for the use specified, could have a material effect on our reputation in the industry and subject us to claims of liability for injuries and otherwise. Misuse of the pumps distributed by us by a practitioner or patient that results in injury could similarly subject us to liability. Any substantial underinsured loss could have a material effect on our financial condition, results of operations and cash flows. Furthermore, any impairment of our reputation could have a material effect on our revenues and prospects for future business.

Unexpected costs or delays in integrating acquisitions could adversely affect our financial results.

We may make acquisitions going forward. As a result, we must devote significant management attention and resources to integrating the business practices and operations. We may encounter difficulties that could harm the businesses, adversely affect our financial condition and cause our stock price to decline, including the following:

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The integration process may divert the attention of our officers and management from day-to-day operations and disrupt our business, particularly if we encounter these types of difficulties. The failure of the combined company to meet the challenges involved in the integration process could cause an interruption of or a loss of momentum in the activities of the combined company and could seriously harm our results of operations.

Even if the operations are integrated successfully, the combined company may not fully realize the expected benefits of the transaction, including the synergies, cost savings or growth opportunities, whether within the anticipated time frame, or anytime in the future.

We intend to continue to pursue opportunities for the further expansion of our business through strategic alliances, joint ventures and/or acquisitions. Future strategic alliances, joint ventures and/or acquisitions may require significant resources and/or result in significant unanticipated costs or liabilities to us.

We intend to continue to pursue opportunities for the further expansion of our business through strategic alliances, joint ventures and/or acquisitions. Any future strategic alliances, joint ventures or acquisitions will depend on our ability to identify suitable partners or acquisition candidates, as the case may be, negotiate acceptable terms for such transactions and obtain financing, if necessary. We also face competition for suitable acquisition candidates which may increase our costs. Acquisitions or other investments require significant managerial attention, which may be diverted from our other operations. Any future acquisitions of businesses could also expose us to unanticipated liabilities.

If we engage in strategic acquisitions, we may experience significant costs and difficulty in assimilating operations or personnel, which could threaten our future growth.

If we make any acquisitions, we could have difficulty assimilating operations, technologies and products or integrating or retaining personnel of acquired companies. In addition, acquisitions may involve entering markets in which we have no or limited direct prior experience. The occurrence of any one or more of these factors could disrupt our ongoing business, distract our management and employees and increase our expenses. In addition, pursuing acquisition opportunities could divert our management’s attention from our ongoing business operations and result in decreased operating performance. Moreover, our profitability may suffer because of acquisition-related costs or amortization of intangible assets. Furthermore, we may have to incur debt or issue equity securities in future acquisitions. The issuance of equity securities would dilute our existing stockholders.

The impact of United States health care reform legislation on us remains uncertain.

In 2010, federal legislation to reform the United States health care system was enacted into law. The legislation is far-reaching and is intended to expand access to health insurance coverage, improve quality and reduce costs over time. We expect the new law will have a significant impact upon various aspects of our business operations. However, it is unclear how the new law will impact patient access to new technologies or reimbursement rates under the Medicare program. In addition, the new law imposes a 2.3% excise tax on medical devices scheduled to be implemented in 2013. Many of the details of the new law will be included in new and revised regulations, which have not yet been promulgated, and require additional guidance and specificity to be provided by the Department of Health and Human Services, Department of Labor and Department of the Treasury. Accordingly, while it is too early to understand and predict the ultimate impact of the new law on our business, the legislation could have a material effect on our business, cash flows, financial condition and results of operations.

We may be unable to maintain adequate working relationships with health care professionals.

We seek to maintain close working relationships with respected physicians and medical personnel in hospitals and universities who assist in product research and development. We rely on these professionals to assist us in the development of proprietary products and product improvements to complement and expand our existing product lines. If we are unable to maintain these relationships, our ability to develop, market and sell new and improved products could decrease and future operating results could be unfavorably affected.

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If we fail to comply with applicable health care regulations, we could face substantial penalties and our business, operations and financial condition could be adversely affected.

Certain federal and state health care laws and regulations pertaining to fraud and abuse and patients’ rights may be applicable to our business. We may be subject to health care fraud and abuse regulation and patient privacy regulation by both the federal government and the states in which we conduct our business. The laws that may affect our ability to operate include:

Additionally, the compliance environment is changing, with more states, such as California and Massachusetts, mandating implementation of compliance programs, compliance with industry ethics codes, and spending limits, and other states, such as Vermont, Maine, and Minnesota, requiring reporting to state governments of gifts, compensation and other remuneration to physicians. Federal legislation, the Physician Payments Sunshine Act (“PPSA”), was signed into law on March 23, 2010. The PPSA requires manufacturers of drug, device, biologics, and medical supplies covered under Medicare, Medicaid, or State Children’s Health Insurance Program (“SCHIP”) to report payments made to physicians on an annual basis to the department of Health and Human Services (“HHS”). HHS in turn will post this information on a public website. These laws all provide for penalties for non-compliance. The shifting regulatory environment, along with the requirement to comply with multiple jurisdictions with different compliance and reporting requirements, increases the possibility that a company may run afoul of one or more laws.

If our operations are found to be in violation of any of the laws described above or any other governmental regulations that apply to us, we may be subject to penalties, including civil and criminal penalties, damages, fines and the curtailment or restructuring of our operations. Any penalties, damages, fines, curtailment or restructuring of our operations could adversely affect our ability to operate our business and our financial results. Any action against us for violation of these laws, even if we successfully defend against it, could cause us to incur significant legal expenses and divert our management’s attention from the operation of our business. Moreover, achieving and sustaining compliance with applicable federal and state privacy, security and fraud laws may prove costly.

If we do not respond to technological changes or upgrade our website and technology systems, our growth prospects and results of operations could be adversely affected.

To remain competitive, we must continue to enhance and improve the functionality and features of our website in addition to our infrastructure. Although we currently do not have specific plans for any infrastructure upgrades that would require significant capital investment outside of the normal course of business, in the future

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we will need to improve and upgrade our technology, database systems and network infrastructure in order to allow our business to grow in both size and scope. Without such improvements, our operations might suffer from unanticipated system disruptions, slow application performance or unreliable service levels, any of which could negatively affect our reputation and ability to attract and retain customers and contributors. Furthermore, in order to continue to attract and retain new customers, we are likely to incur expenses in connection with continuously updating and improving our user interface and experience. We may face significant delays in introducing new services, products and enhancements. If competitors introduce new products and services using new technologies or if new industry standards and practices emerge, our existing websites and our proprietary technology and systems may become obsolete or less competitive, and our business may be harmed. In addition, the expansion and improvement of our systems and infrastructure may require us to commit substantial financial, operational and technical resources, with no assurance that our business will improve.

Technological interruptions that impair access to our website or the efficiency of our marketplace would damage our reputation and brand and adversely affect our results of operations.

The satisfactory performance, reliability and availability of our website and our network infrastructure are critical to our reputation, our ability to attract and retain customers and our ability to maintain adequate customer service levels. Any system interruptions that result in the unavailability of our website could result in negative publicity, damage our reputation and brand or adversely affect our results of operations. We may experience temporary system interruptions for a variety of reasons, including security breaches and other security incidents, viruses, telecommunication and other network failures, power failures, software errors, data corruption or an overwhelming number of visitors trying to reach our websites during periods of strong demand. We rely upon third-party service providers, such as co-location and cloud service providers, for our data centers and application hosting, and we are dependent on these third parties to provide continuous power, cooling, internet connectivity and physical security for our servers. In the event that these third-party providers experience any interruption in operations or cease business for any reason, or if we are unable to agree on satisfactory terms for continued hosting relationships, our business could be harmed and we could be forced to enter into a relationship with other service providers or assume hosting responsibilities ourselves. Although we operate two data centers in an active/standby configuration for geographic and vendor redundancy and even though we maintain a third disaster recovery facility to back up our content collection, a system disruption at the active data center could result in a noticeable disruption to our websites until all website traffic is redirected to the standby data center. Even a disruption as brief as a few minutes could have a negative impact on marketplace activities and could therefore result in a loss of revenue. Because some of the causes of system interruptions may be outside of our control, we may not be able to remedy such interruptions in a timely manner, or at all.

Failure to protect our intellectual property could substantially harm our business and operating results.

In order to protect our trade secrets and other confidential information, we rely in part on confidentiality agreements with our employees, consultants and third parties with whom we have relationships. These agreements may not effectively prevent disclosure of trade secrets and other confidential information and may not provide an adequate remedy in the event of misappropriation of trade secrets or any unauthorized disclosure of trade secrets and other confidential information. In addition, others may independently discover our trade secrets and confidential information, and in such cases we could not assert any trade secret rights against such parties. Costly and time-consuming litigation could be necessary to enforce or determine the scope of our trade secret rights and related confidentiality and nondisclosure provisions. Failure to obtain or maintain trade secret protection, or our competitors’ acquisition of our trade secrets or independent development of unpatented technology similar to ours or competing technologies, could adversely affect our competitive business position.

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We are dependent upon executive officers and other key personnel — The loss of any of our executive officers or other key personnel could reduce our ability to manage our businesses and achieve our business plan, which could cause our sales to decline and our operating results and cash flows to suffer

Our success is substantially dependent on the continued services of our executive officers and other key personnel who generally have extensive experience in our industry. Our future success also will depend in large part upon our ability to identify, attract and retain other highly qualified executive officers, managerial, finance, technical and sales and marketing personnel. Competition for these individuals is intense. The loss of the services of any executive officer or other key employees, or our failure to attract and retain other qualified and experienced personnel on acceptable terms, could have a material effect on our business and results of operations.

Covenants in our debt agreement restrict our business.

The credit agreement that governs our Credit Facility contains, and the agreements that govern our future indebtedness may contain, covenants that restrict our ability to and the ability of our subsidiaries to, among other things:

RISK FACTORS RELATING SPECIFICALLY TO OUR COMMON STOCK

The market price of our common stock has been, and is likely to remain, volatile and may decline in value.

The market price of our common stock has been and is likely to continue to be volatile. Market prices for securities of health care services companies, including ours, have historically been volatile, and the market has from time to time experienced significant price and volume fluctuations that appear unrelated to the operating performance of particular companies. The following factors, among others, can have a significant effect on the market price of our securities:

The realization of any risks described in these “Risk Factors” could also have a negative effect on the market price of our common stock.

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We do not pay dividends and this may negatively affect the price of our stock.

Under the terms of our credit agreement with Wells Fargo and PennantPark, our ability to pay dividends on our common stock is limited and we do not anticipate paying dividends on our common stock in the foreseeable future. The future price of our common stock may be adversely impacted because we do not pay dividends.

Future sales of our common stock may depress our stock price.

The market price of our common stock could decline as a result of sales of substantial amounts of our common stock in the public market, or the perception that these sales could occur. In addition to the shares of our common stock currently available for sale in the public market, shares of our common stock sold in past private placements (which include shares held by certain members of our Board of Directors) may be sold in the public market. These factors could also make it more difficult for us to raise funds through future equity offerings.

Limitation on Net Operating Loss Carryforwards and Certain Built-In Losses Following Ownership Change

If an ownership change occurs, the Company may be limited in its ability to use its deferred tax assets and may have to record a valuation allowance against such assets. There is an ownership change if, immediately after any owner shift involving a 5-percent shareholder or any equity structure shift, the percentage of the stock of the corporation owned by 1 or more 5-percent shareholders has increased by more than 50 percentage points, over the lowest percentage of stock of the corporation (or any predecessor corporation) owned by such shareholders at any time during the testing period. For purposes of the preceding sentence, the term “50-percent shareholder” means any person owning 50 percent or more of the stock of the corporation at any time during the 3-year period ending on the last day of the taxable year with respect to which the stock was so treated.

None.

We do not own any real property. We lease office and warehouse space at the following locations:

We believe that such office and warehouse space is suitable and adequate for our business.

We are involved in legal proceedings arising out of the ordinary course and conduct of our business, the outcomes of which are not determinable at this time. We have insurance policies covering such potential losses where such coverage is cost effective. In our opinion, any liability that might be incurred by us upon the resolution of these claims and lawsuits will not, in the aggregate, have a material effect on our financial condition, results of operations or cash flows.

Not applicable.

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PART II

Our common stock is currently traded on the NYSE-MKT under the symbol INFU. On April 11, 2011, 8.3 million outstanding publicly held warrants and 1.1 million privately held warrants expired in accordance with their terms and consequently the Company recorded a gain of $0.1 million.

See Note 7 in the Notes to the Consolidated Financial Statements for additional information on the expired warrants. The following tables set forth, for the calendar quarter indicated, the quarterly high and low bid information of our common stock, units and warrants, respectively, as reported on the NYSE-MKT or the OTC Bulletin Board, as applicable. The quotations listed below reflect interdealer prices, without retail markup, markdown or commission and may not necessarily represent actual transactions.

Common Stock

Holders of Common Equity

As of March 15, 2013, we had approximately 400 stockholders of record of our common stock. This does not include beneficial owners of our common stock, including Cede & Co., nominee of the Depository Trust Company.

Dividends

We have not paid any dividends on our common stock to date. The payment of dividends in the future will be contingent upon our revenues and earnings, if any, capital requirements and general financial condition. Under the terms of our Credit Facility, we are limited in our ability to pay dividends. It is the present intention of our Board of Directors to retain all earnings, if any, for use in our business operations and, accordingly, our Board of Directors does not anticipate declaring any dividends in the foreseeable future.

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Equity Compensation Plan Information

The following table provides information as of December 31, 2012 with respect to compensation plans, including individual compensation arrangements, under which our equity securities are authorized for issuance (in thousands):

Stock Performance Graph

InfuSystem Holding, Inc. is a smaller reporting company as defined by Rule 12b-2 of the Exchange Act and is not required to provide the information required under this item.

Recent Sales of Unregistered Securities

None.

Repurchases of Equity Securities

As previously announced, in October 2010, our Board of Directors has authorized a share repurchase program of up to $2.0 million of our outstanding common shares. The repurchase program will be funded by our available cash balance. This program was concluded in 2011.

Stock repurchases may be made through open market transactions, negotiated purchases or otherwise, at times and in such amounts as our management deems to be appropriate. The timing and actual number of shares repurchased will depend on a variety of factors, including price, financing and regulatory requirements, as well as other market conditions. The program does not require us to repurchase any specific number of shares or to complete the program within a specific period of time.

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For the year ended December 31, 2012, there were no purchases of common stock shares. The following table provides information about our purchases of common stock during the year ended December 31, 2011.

InfuSystem Holding, Inc. is a smaller reporting company as defined by Rule 12b-2 of the Exchange Act and is not required to provide the information required under this item.

Overview

We are a leading provider of infusion pumps and related services in the United States. We service hospitals, oncology practices and other alternate site health care providers. Headquartered in Madison Heights, Michigan, we deliver local, field-based customer support, and also operate Centers of Excellence in Michigan, Kansas, California, and Ontario, Canada.

We supply electronic ambulatory infusion pumps and associated disposable supply kits to oncology practices, infusion clinics and hospital outpatient chemotherapy clinics. These pumps and supplies are utilized primarily by colorectal cancer patients who receive a standard of care treatment that utilizes continuous chemotherapy infusions delivered via electronic ambulatory infusion pumps. We obtain an assignment of insurance benefits from the patient, bill the insurance company or patient accordingly and collect payment. We provide pump management services for the pumps and associated disposable supply kits to approximately 1,600 oncology clinics in the United States and retain title to the pumps during this process.

We sell or rent new and pre-owned pole mounted and ambulatory infusion pumps to, and provide biomedical recertification, maintenance and repair services for, oncology practices as well as other alternate site settings including home care and home infusion providers, skilled nursing facilities, pain centers and others.

Additionally we sell, rent, service and repair new and pre-owned infusion pumps and other medical equipment. We also sell a variety of primary and secondary tubing, cassettes, catheters and other disposable items that are utilized with infusion pumps.

In February 2012, a Concerned Stockholder Group requested a Special Meeting as described in the 2011 Form 10-K. If the Special Meeting had resulted in a change in the majority of our Board under the terms of the Company’s credit facility with Bank of America, N.A. and KeyBank National Association (the “Lenders”), a change in the majority of the Board would have constituted a change in control and an event of default, which would have allowed the Lenders to cause the debt to be immediately due and payable. This possibility of a change in the majority representation of the Board and consequent event of default under the credit facility,

which would have allowed the Lenders to cause the debt of $24.0 million as of December 31, 2011 to become immediately due and payable, raised substantial doubt about the Company’s ability to continue as a going

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concern. The 2011 consolidated financial statements did not include any adjustments, if any, that would have resulted from the outcome of this uncertainty. As further described herein, although a change in the board composition took place during the second quarter of 2012, the Company negotiated an amendment to its credit agreement to exclude this change of board members from its definition of an event of default and the Special Meeting was cancelled.

On April 24, 2012 we reached the Settlement Agreement with the Concerned Stockholder Group, resulting in a series of changes to the Board and senior leadership. In accordance with Section 141(b) of the Delaware General Corporation Law (“DGCL”) and Section 2.2 of the Company’s amended and restated bylaws, the total number of authorized directors on the Board was increased from seven (7) to twelve (12). These newly created vacancies were filled by John Climaco, Charles Gillman, Ryan Morris, Dilip Singh and Joseph Whitters. Timothy Kopra, Pat LaVecchia, Sean McDevitt, Jean-Pierre Millon and John Voris (“Old Board Members”) resigned as directors of the Company. As a result of the above, in accordance with Section 141(b) of the DGCL and Section 2.2 of the Bylaws, the total number of authorized directors on the Board was decreased from twelve (12) to seven (7) to be effective following the resignations of the Old Board Members. In addition, Mr. McDevitt, the Company’s then CEO resigned to pursue other interests and was replaced with Mr. Singh on an interim basis. Mr. Morris was appointed Executive Chairman. On February 9, 2013, the Board announced the approval of the waiver of the application of the standstill provisions provided in Section 2.2 of the Settlement Agreement to Meson Capital Partners LP, Meson Capital Partners LLC and Mr. Morris.

Concurrent with and as a condition of the Settlement Agreement, on April 24, 2012, Mr. McDevitt entered into a consulting agreement with the Company under which he resigned as CEO of the Company and agreed to serve as a consultant until July 31, 2012. Under the consulting agreement, Mr. McDevitt received a consulting fee of $1.0 million, paid in shares of the Company’s common stock. Shares issued to Mr. McDevitt were issued from the Company’s 2007 Stock Incentive Plan, as amended, valued at the average closing price of a share on the NYSE-MKT on the five trading days preceding the date of such issuance and totaled 0.5 million.

Per the terms of the consulting agreement, Mr. McDevitt’s Share Award Agreement entered into on April 6, 2010 with the Company terminated, including the 2.0 million shares of common stock potentially issuable under such agreement. Approximately $6.0 million in unrecognized compensation expense associated with such shares will not be recognized by the Company in the future. As these shares were forfeited before the requisite service period for this award was rendered, previously recognized compensation expense of $1.3 million was reversed and recorded as a reduction of general and administrative expense during the three months ended June 30, 2012.

On November 30, 2012, the Company entered into a credit facility with Wells Fargo as Administrative Agent and PennantPark as Lenders, replacing the Company’s Credit Agreement, dated as of June 15, 2010, as amended, with Bank of America, N.A. as Administrative Agent and Keybank National Association as Lender. The facility consisted of a $12.0 million Term Loan A (provided by Wells Fargo), a $14.5 million Term Loan B (provided by PennantPark) and a $10.0 million revolving credit facility, all of which mature on November 30, 2016, collectively the (“Credit Facility”). Interest on the term loan is payable at the Company’s choice of LIBOR plus 7.25% (with a LIBOR floor of 2.0%) or the Wells Fargo prime rate plus 6.25% (with a prime rate floor of 3.0%). As of December 31, 2012, interest was payable at LIBOR plus 7.25%, which equaled 9.25%. Proceeds from the term loan were used for general corporate purposes as well as to repay the outstanding balance of the Company’s Bank of America credit agreement.

During fiscal 2012, the Company’s Board of Director’s explored and evaluated potential strategic alternatives as previously disclosed on March 15, 2012, including a potential sale of the Company or debt refinancing. As a result of these actions, the Company incurred costs of $0.6 million, specifically relating to professional fees and other fees and expenses. On January 3, 2013, the Company announced that the Company’s Board had formally ended its considerations of potential strategic alternatives initiated in March 2012. These costs are included within the General and Administrative line in our Consolidated Statement of Operations.

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In addition, on January 3, 2013, the Company announced the appointment of Jan Skonieczny as Chief Operating Officer and the initiation of a search process for a permanent Chief Executive Officer (“CEO”) to replace the Company’s Interim CEO, Dilip Singh. As a result of that search, on March 14, 2013, the Company announced its Board of Directors had appointed Eric Steen, who has more than 30 years of medical device and pharmaceutical industry experience, as Chief Executive Officer, effective April 1, 2013. Dilip Singh, who has served as the Company’s Interim CEO since April 2012, will step down from that position on the same date.

InfuSystem Holdings, Inc. Results of Operations for the Year ended December 31, 2012 compared to the Year ended December 31, 2011

Revenues

Our revenue for the year ended December 31, 2012 was $58.8 million, an 8% increase compared to $54.6 million for the year ended December 31, 2011, primarily in rental revenues. The increase in revenues is primarily related to the addition of larger customers, increased penetration into our existing customer accounts and the resolution of the oncology drug shortage affecting certain products which was having a negative effect on new patient start on pumps.

During the fourth quarter of 2012, a major group of third party payors revised their claim processing guidelines that affected all DME providers which pushed some of our claims from “in-network billed directly to a third-party payor” to “out-of-network billed directly to the patient” thereby increasing revenue based on the higher out-of-network rates. Conversely, collecting a higher portion of reimbursement directly from patients increases our bad debt expense in Selling, General and Administrative expenses.

Gross Profit

Gross profit for the year ended December 31, 2012 was $42.9 million, an increase of 21% compared to $35.4 million in the prior year. It represented 73% of revenues in the current year compared to 65% in the prior year. The increase in the gross margin as a percentage of revenue in 2012 was primarily related to the aforementioned increase in rental revenue, specifically third party billings, which generally have a higher gross profit margin.

Provision for Doubtful Accounts

Provision for doubtful accounts for the year ended December 31, 2012 was $5.3 million, compared to $4.1 million for the year ended December 31, 2011. It represented 9% of revenues in the current year compared to 8% in the prior year. The increase, as a percentage of revenues is primarily the result of the aforementioned recent changes by a major third party payor of their in-network process, which resulted in an additional write-off of approximately $1.0 million in the three months ended December 31, 2012.

Amortization of Intangible Assets

Amortization of intangible assets for the year ended December 31, 2012 was $2.7 million, which was consistent with the prior year end 2011.

Selling and Marketing Expenses

For the year ended December 31, 2012, our selling and marketing expenses were $9.9 million compared to $9.4 million for the year ended December 31, 2011. The increase in selling and marketing expenses is primarily related to expenses incurred by the increase in associated revenues as well as increased retention and travel costs in the sales and marketing departments. As compared to the prior year, these expenses remained consistent at 17% of revenues. Selling and marketing expenses during these periods consisted of sales salaries, commissions and associated fringe benefit and payroll-related items, marketing, share-based compensation, travel and entertainment and other miscellaneous expenses.

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General and Administrative Expenses

During the year ended December 31, 2012, our general and administrative expenses were $23.1 million, compared to $18.0 million for the year ended December 31, 2011. General and administrative expenses during these periods consisted primarily of administrative personnel salaries, fringe benefits and payroll-related items, professional fees, legal fees, share-based compensation, insurance and other miscellaneous expenses. General and administrative expenses have increased from 33% to 39% of revenues for the year ended December 31, 2012 compared to the same period in the prior year. The increase was primarily related to an increase in professional service costs related to the Concerned Stockholder Group as described in Note 2 to the Consolidated Financial Statements and as described above. Additional legal, accounting and outside service fees of $2.2 million were incurred during the year relating to this matter and the Fifth Amendment to the Credit Facility, severance payments for the former CEO amounted to $1.0 million; $0.6 million was recorded for retention payments to key employees during this ongoing matter, and we incurred $0.6 million associated with our decision to evaluate potential strategic alternatives. Additional increases were mainly attributed to the aforementioned increase in finance and accounting staff and several other general and administrative accounts. These costs were partially offset by the reversal of previously recognized stock compensation expense of $1.4 million, for which the requisite service was not rendered.

Other Income and Expenses

During the year ended December 31, 2012, we recorded no gain or loss on derivatives compared to a gain of $0.1 million during the year ended December 31, 2011. Included in the year ended December 31, 2011 was the gain from the expiration on April 11, 2011 of all outstanding warrants to purchase common stock. For more information, refer to the discussion under “Summary of Significant Accounting Policies — Warrants and Derivative Financial Instruments” included in Note 2 and “Warrants and Derivative Financial Instruments” included in Note 7 to our Consolidated Financial Statements included in this Annual Report on Form 10-K.

During the year ended December 31, 2012, we recorded interest expense of $3.3 million, compared to $2.2 million for the year ended December 31, 2011. These increased amounts are mainly attributed to the payment of a monthly ticking fee equal to 1% of the aggregate amount outstanding on our credit agreement under our Fifth Amendment, which amounted to approximately $1.0 million for the year ended December 31, 2012 and the remaining increase consisted primarily of interest paid on our term loans, cash payments associated with our terminated interest rate swap, amortization of deferred debt issuance costs and interest expense on capital leases.

During the year ended December 31, 2012, we recorded an income tax benefit of $0.7 million, compared to a benefit of $23.1 million for the year ended December 31, 2011. The effective tax rate for the year ended December 31, 2012 was 30.84%, compared to 33.63% for the year ended December 31, 2011. Refer to the discussion under “Summary of Significant Accounting Policies — Income Taxes” included in Note 2 and “Income Taxes” included in Note 9 to our Consolidated Financial Statements included in this Annual Report on Form 10-K.

Inflation

Management believes that there has been no material effect on our operations or financial condition as a result of inflation or changing prices of our ambulatory infusion pumps during the period from December 31, 2011 through December 31, 2012.

Liquidity and Capital Resources

As of December 31, 2012, we had cash and cash equivalents of $2.3 million and $4.7 million of availability on the revolving line-of-credit compared to $0.8 million and $4.9 million of availability on the revolving line-of-credit at December 31, 2011. The increase in cash was primarily related to positive cash flows from operating activities offset by capital expenditures of $6.5 million, professional fees of $2.2 million, strategic alternative fees of $0.6 million and payments on capital leases of $2.5 million.

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Cash provided by operating activities for the year ended December 31, 2012 was $5.5 million, compared to cash provided by operating activities of $6.7 million for the year ended December 31, 2011. The decrease is primarily attributable to an increase in revenue offset by better management of payment terms in accounts payable and other current liabilities.

Cash used in investing activities for the year ended December 31, 2012 was $2.6 million compared to $5.1 million for the year ended December 31, 2011. The decrease is primarily related to lower capital expenditures during the year and no acquisitions of intangible and other assets.

Cash used in financing activities for the year ended December 31, 2012 was $1.4 million compared to $5.8 million for the year ended December 31, 2011. The change was primarily related to additional borrowing due to a new debt agreement with Wells Fargo.

Management believes the current funds, together with expected cash flows from ongoing operations as well as the $4.7 million available as of December 31, 2012 on the revolving credit facility referred to below, are sufficient to fund our current operations.

On November 30, 2012, we entered into a credit facility with Wells Fargo as Administrative Agent and PennantPark as Lenders. The facility consisted of a $12.0 million Term Loan A (provided by Wells Fargo), a $14.5 million Term Loan B (provided by PennantPark) and a $10.0 million revolving credit facility, all of which mature on November 30, 2016, collectively (the “Credit Facility”). Interest on the term loan is payable at the Company’s choice of LIBOR plus 7.25% (with a LIBOR floor of 2.0%) or the Wells Fargo prime rate plus 6.25% (with a prime rate floor of 3.0%). As of December 31, 2012, interest was payable at LIBOR plus 7.25%, which equaled 9.25%.

Proceeds from the term loan were used for general corporate purposes as well as to repay the outstanding balance of the Company’s the Bank of America credit agreement.

Availability under the revolving credit facility is based upon the Company’s eligible accounts receivable and eligible inventory. As of December 31, 2012, the Company had revolving loan gross availability of $6.5 million and outstanding amounts totaling $1.8 million, leaving approximately $4.7 million available under the revolving credit facility.

The credit facility is collateralized by substantially all of the Company’s assets and requires the Company to comply with covenants, including but not limited to, financial covenants relating to the satisfaction, on a quarterly and annual basis for the duration of the Credit Facility, of a total leverage ratio, a fixed charge coverage ratio and an annual limit on capital expenditures, including capital leases. As of December 31, 2012, the Company was in compliance with all such covenants and expects to be in compliance for the next 12 months.

The following is a description of these covenants.

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Contractual Obligations

InfuSystem Holding, Inc. is a smaller reporting company as defined by Rule 12b-2 of the Exchange Act and is not required to provide this information.

Contingent Liabilities

We do not have any contingent liabilities.

Off-Balance Sheet Arrangements

We do not have any material off-balance sheet arrangements.

Critical Accounting Policies and Estimates

The preparation of financial statements in conformity with GAAP requires management to make estimates, assumptions and judgments that affect the amounts reported in the financial statements, including the notes thereto. We consider critical accounting policies to be those that require more significant judgments and estimates in the preparation of our consolidated financial statements, including the following: revenue recognition, which includes contractual allowances; accounts receivable and allowance for doubtful accounts; warrants and derivative financial instruments; income taxes; and goodwill valuation. Management relies on historical experience and other assumptions believed to be reasonable in making its judgment and estimates. Actual results could differ materially from those estimates.

Management believes its application of accounting policies, and the estimates inherently required therein, are reasonable. These accounting policies and estimates are periodically reevaluated, and adjustments are made when facts and circumstances dictate a change.

Our accounting policies are more fully described under the heading “Summary of Significant Accounting Policies” in Note 2 to our Consolidated Financial Statements included in this Annual Report on Form 10-K. We believe the following critical accounting estimates are the most significant to the presentation of our financial statements and require the most difficult, subjective and complex judgments:

Revenue Recognition

We recognize revenue for selling, renting and servicing new and pre-owned infusion pumps and other medical equipment to oncology practices as well as other alternate site settings including home care and home infusion providers, skilled nursing facilities, pain centers and others, when 1) persuasive evidence of an arrangement exists; 2) services have been rendered; 3) the price to the customer is fixed or determinable; and 4) collectability is reasonably assured. Persuasive evidence of an arrangement is determined to exist, and collectability is reasonably assured, when 1) we receive a physician’s written order and assignment of benefits, signed by the physician and patient, respectively; 2) we have verified actual pump usage and 3) we receive patient acknowledgement of assignment of benefits. We recognize rental revenue from electronic infusion pumps as earned, normally on a month-to-month basis. Pump rentals are billed at our established rates, which often differ from contractually allowable rates provided by third-party payors such as Medicare, Medicaid and commercial insurance carriers. All billings to third party payors are recorded net of provision for contractual adjustments to arrive at net revenues. We perform an analysis to estimate sales returns and record an allowance. This estimate is based on historical sales returns.

Due to the nature of the industry and the reimbursement environment in which we operate, certain estimates are required to record net revenues and accounts receivable at their net realizable values. Inherent in these estimates is the risk that they will have to be revised or updated as additional information becomes available. Specifically, the complexity of many third-party billing arrangements and the uncertainty of reimbursement

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amounts for certain services from certain payors may result in adjustments to amounts originally recorded. Due to continuing changes in the health care industry and third-party reimbursement, it is possible that management’s estimates could change in the near term, which could have an impact on our results of operations and cash flows.

Our largest contracted payor is Medicare, which accounted for approximately 31% of our gross billings for ambulatory infusion pump services for the years ended December 31, 2012 and 2011, respectively. Our contracts with our next largest contracted payor, in the aggregate, accounted for approximately 18% and 21% of our gross billings for ambulatory infusion pump services for the years ended December 31, 2012 and 2011, respectively. We also contract with various other third party payor organizations, commercial Medicare replacement plans, self-insured plans and numerous other insurance carriers. No individual payor, other than those listed above, accounts for greater than approximately 7% of our ambulatory infusion pump services gross billings.

Accounts Receivable and Allowance for Doubtful Accounts

Accounts receivable are reported at the estimated net realizable amounts from patients, third-party payors and other direct pay customers for goods provided and services rendered. We perform periodic analyses to assess the accounts receivable balances and record an allowance for doubtful accounts based on the estimated collectability of the accounts such that the recorded amounts reflect estimated net realizable value. Upon determination that an account is uncollectible, the account is written-off and charged to the allowance.

Accounts receivable are reduced by an allowance for amounts that could become uncollectible in the future. Our estimate for allowance for doubtful accounts is based upon management’s assessment of historical and expected net collections. Due to continuing changes in the health care industry and third-party reimbursement it is possible that management’s estimates could change in the near term, which could have an impact on its financial position, results of operations, and cash flows.

Following is an analysis of the allowance for doubtful accounts for InfuSystem Holdings, Inc. for the years ended December 31 (in thousands):

Income Taxes

We recognize deferred tax liabilities and assets based on the differences between the financial statement carrying amounts and the tax basis of assets and liabilities, using enacted tax rates in effect in the years the differences are expected to reverse. Deferred income tax (expense) benefit results from the change in net deferred tax assets or deferred tax liabilities. A valuation allowance is recorded when, in the opinion of management, it is more likely than not that some or all of any deferred tax assets will not be realized. For more information, refer to the “Income Taxes” discussion included in Note 9 in the Notes to the Consolidated Financial Statements.

Goodwill and Other Intangibles Valuation

Goodwill arising from business combinations represents the excess of the purchase price over the estimated fair value of the net assets of the businesses acquired.

We apply a fair value based impairment test for our single reporting unit to the net book value of goodwill and indefinite-lived assets on an annual basis and, if certain events or circumstances indicate that an impairment loss may have been incurred, on an interim basis. The analysis of potential impairments of goodwill requires a

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two-step process. The first step is an estimation of fair value of the Company. If step one indicates that impairment potentially exists, the second step is performed to measure the amount of impairment, if any. Impairment exists when the fair value of goodwill or indefinite-lived assets is less than the carrying value.

We performed our annual impairment analysis in October 2012 and determined that the fair value of all remaining indefinite-lived assets was greater than the carrying value, resulting in no impairment of indefinite-lived assets.

As of June 30, 2011, based on a combination of factors, including a decline in our market capitalization, updated business forecasts, and the expiration of our warrants, we concluded that there were sufficient indicators to require us to perform an interim goodwill and indefinite lived intangibles impairment analysis. For the purposes of the analysis performed during the second quarter of 2011, our estimates of fair value were based on a combination of the income approach, which estimates the fair value based on the future discounted cash flows, and the market approach, which estimates the fair value based on comparable market prices. We concluded that an impairment loss existed and we recorded a $44.2 million non-cash asset impairment charge.

As of September 30, 2011, based on a significant decline in our market capitalization, we concluded that there was an indicator to require us to perform an additional interim goodwill and indefinite lived intangibles impairment analysis. For the purposes of the analysis performed during the third quarter of 2011, our estimates of fair value were based on a combination of the income approach, which estimates the fair value based on the future discounted cash flows, and the market approach, which estimates the fair value based on comparable market prices. We concluded that an impairment loss existed and for the three months ended September 30, 2011, we recorded $23.4 million for non-cash asset impairment charges representing our best estimate of the loss. Goodwill was fully impaired as of December 31, 2011.

For more information, refer to the “Goodwill and Intangible Assets” discussion included in Note 6 in the Notes to the Consolidated Financial Statements.

InfuSystem Holding, Inc. is a smaller reporting company as defined by Rule 12b-2 of the Exchange Act and is not required to provide the information required under this item.

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Index to Financial Statements

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REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

To the Board of Directors and Stockholders of

InfuSystem Holdings, Inc.

Madison Heights, Michigan

We have audited the accompanying consolidated balance sheets of InfuSystem Holdings Inc., and subsidiaries (the “Company”) as of December 31, 2012 and 2011, and the related consolidated statements of operations, comprehensive loss, stockholders’ equity and cash flows for the years then ended. These financial statements are the responsibility of the Company’s management. Our responsibility is to express an opinion on these financial statements based on our audits.

We conducted our audits in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement. The Company is not required to have, nor were we engaged to perform, an audit of its internal control over financial reporting. Our audits included consideration of internal control over financial reporting as a basis for designing audit procedures that are appropriate in the circumstances, but not for the purpose of expressing an opinion on the effectiveness of the Company’s internal control over financial reporting. Accordingly, we express no such opinion. An audit also includes examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements, assessing the accounting principles used and significant estimates made by management, as well as evaluating the overall financial statement presentation. We believe that our audits provide a reasonable basis for our opinion.

In our opinion, such consolidated financial statements present fairly, in all material respects, the financial position of InfuSystem Holdings, Inc. and subsidiaries as of December 31, 2012 and 2011, and the results of their operations and their cash flows for the years then ended in conformity with accounting principles generally accepted in the United States of America.

/s/ DELOITTE & TOUCHE LLP

Detroit, Michigan

March 28, 2013

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INFUSYSTEM HOLDINGS, INC. AND SUBSIDIARIES

CONSOLIDATED BALANCE SHEETS

See accompanying notes to consolidated financial statements

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INFUSYSTEM HOLDINGS, INC. AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF OPERATIONS AND

STATEMENTS OF COMPREHENSIVE LOSS

See accompanying notes to consolidated financial statements

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INFUSYSTEM HOLDINGS, INC. AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF

STOCKHOLDERS’ EQUITY

See accompanying notes to consolidated financial statements

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INFUSYSTEM HOLDINGS, INC. AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF CASH FLOWS

See accompanying notes to consolidated financial statements

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The following table presents certain supplementary cash flow information for the years ended December 31, 2012 and 2011:

See accompanying notes to consolidated financial statements

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INFUSYSTEM HOLDINGS, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

The information in this Annual Report on Form 10-K includes the financial position as of December 31, 2012 and 2011 and results of operations, cash flows and stockholders’ equity for the years ended December 31, 2012 and 2011 of InfuSystem Holdings, Inc. and its consolidated subsidiaries (the “Company”). In the opinion of the Company, the consolidated statements for all periods presented include all adjustments necessary for a fair presentation of the financial statements.

The accompanying consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”).

The Company is a leading provider of infusion pumps and related services in the United States. The Company services hospitals, oncology clinics and other alternate site health care providers. Headquartered in Madison Heights, Michigan, the Company delivers local, field-based customer support, and also operates pump repair Centers of Excellence in Michigan, Kansas, California, and Ontario, Canada.

The Company supplies electronic ambulatory infusion pumps and associated disposable supply kits to oncology clinics, infusion clinics and hospital outpatient chemotherapy clinics. These pumps and supplies are utilized primarily by colorectal cancer patients who receive a standard of care treatment that utilizes continuous chemotherapy infusions delivered via electronic ambulatory infusion pumps. The Company obtains an assignment of insurance benefits from the patient, bills the insurance company or patient accordingly, and collects payment. The Company provides pump management services for the pumps and associated disposable supply kits to approximately 1,600 oncology clinics in the United States. The Company retains title to the pumps during this process.

In addition, the Company sells or rents new and pre-owned pole mounted and ambulatory infusion pumps to, and provides biomedical recertification, maintenance and repair services for oncology practices as well as other alternate site settings including home care and home infusion providers, skilled nursing facilities, pain centers and others. The Company also provides these products and services to customers in the small-hospital market.

The Company purchases new and pre-owned pole mounted and ambulatory infusion pumps from a variety of sources on a non-exclusive basis. The Company repairs, refurbishes and provides biomedical certification for the devices as needed. The pumps are then available for sale, rental or to be used within the Company’s ambulatory infusion pump management service.

Revised Presentation in the Consolidated Statements

The Company both rents and sells medical equipment. It has come to management’s attention that based on promulgation through recent comments from the Staff of the Securities and Exchange Commission greater clarity and consistent classification should be provided in an entity’s financial statements around such assets on the balance sheet and in the statement of cash flows. Specifically, the Staff believes that a company should clearly disclose (i) assets on the balance sheet; and (ii) cash flows when presenting cash flows in relation to, and in consideration of, its predominant source of revenues.

Management believes that the predominant source of revenues and cash flows from this medical equipment is from rentals and most equipment purchased is likely to be rented prior to being sold. Accordingly, to conform to this clarified position, the Company has concluded that (i) the assets specifically supporting its revenue should

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be separately disclosed on the balance sheet; (ii) the purchase and sale of medical equipment that were historically recorded both in operating and investing cash flows should be classified solely in investing cash flows based on their predominant source; and (iii) other activities ancillary to the rental process should be consistently classified.

While management has concluded that the effect of correcting previous errors in its financial statements is not material, the Company reclassified certain elements of its Consolidated Balance Sheets and Consolidated Statement of Cash Flows for the year ended December 31, 2011 to allow for appropriate comparisons between years.

The effect of these reclassifications to the Consolidated Cash Flow Statement was to reduce Net cash provided by operating activities and reduce Net cash used in investing activities by $0.4 million for the year ended December 31, 2011 and the effect to the Consolidated Balance Sheet was to reclassify Inventory totaling $1.9 million to Medical equipment held for sale or rental as of December 31, 2011.

The corrections and reclassifications described above did not affect the Company’s consolidated statements of operations or total cash flows for the years ended December 31, 2011, or total assets as of December 31, 2011.

Principles of Consolidation

The consolidated financial statements include the accounts of the Company and all wholly owned organizations. All intercompany transactions and account balances have been eliminated in consolidation.

Segments

The Company operates in one business segment based on management’s view of its business for purposes of evaluating performance and making operating decisions.

The Company utilizes shared services including but not limited to, human resources, payroll, finance, sales, pump repair and maintenance services, as well as certain shared assets and sales, general and administrative costs. The Company’s approach is to make operational decisions and assess performance based on delivering products and services that together provide solutions to our customer base, utilizing functional management structure and shared services where possible. Based upon this business model, the chief operating decision maker only reviews consolidated financial information.

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Use of Estimates

The preparation of financial statements in conformity with GAAP requires management to make estimates, assumptions and judgments that affect the amounts reported in the financial statements, including the notes thereto. The Company considers critical accounting policies to be those that require more significant judgments and estimates in the preparation of its consolidated financial statements, including the following: revenue recognition, which includes contractual adjustments; accounts receivable and allowance for doubtful accounts; sales return allowances; inventory reserves; long lived assets; intangible assets; income taxes; and goodwill valuation. Management relies on historical experience and other assumptions believed to be reasonable in making its judgment and estimates. Actual results could differ materially from those estimates.

Cash and Cash Equivalents

The Company considers all highly liquid investments with original maturities of three months or less to be cash equivalents. The Company maintains its cash and cash equivalents primarily with two financial institutions and is fully insured with the Federal Deposit Insurance Corporation (“FDIC”).

Accounts Receivable and Allowance for Doubtful Accounts

Accounts receivable are reported at the estimated net realizable amounts from patients, third-party payors and other direct pay customers for goods provided and services rendered. The Company performs periodic analyses to assess the accounts receivable balances. It records an allowance for doubtful accounts based on the estimated collectability of the accounts such that the recorded amounts reflect estimated net realizable value. Upon determination that an account is uncollectible, the account is written-off and charged to the allowance.

Accounts receivable are reduced by an allowance for amounts that could become uncollectible in the future. The Company’s estimate for its allowance for doubtful accounts is based upon management’s assessment of historical and expected net collections. Due to continuing changes in the health care industry and third-party reimbursement, it is possible that management’s estimates could change in the near term, which could have a material impact on its financial position, results of operations and cash flows.

Following is an analysis of the allowance for doubtful accounts for the Company for the years ended December 31 (in thousands):