What Is Healthcare Accounting: Records, Filings, and Audits

Healthcare accounting is the financial management discipline built around the billing, reimbursement, reporting, and compliance demands unique to medical providers and clinical facilities. Where a typical business tracks sales against expenses, a hospital or clinic has to work through insurance reimbursements, government payer rules, and regulations that directly shape when and how revenue can be recorded. The work runs from translating a physician’s notes into billable codes to filing federally mandated cost reports with Medicare.

How Money Flows Into a Medical Facility

The process is called revenue cycle management, and it begins before the patient ever sees a provider. Front-desk staff verify insurance coverage, collect demographic information, and confirm policy numbers at registration. Errors here ripple forward. A wrong subscriber ID or an expired policy can trigger a claim denial weeks later, forcing the accounting team to rework the whole transaction.

Once care is delivered, the clinical encounter has to be converted into standardized billing codes. Coders review the provider’s documentation and assign diagnosis codes (ICD-10) that justify medical necessity, alongside procedure codes (CPT) that describe what was actually performed. Those codes form the backbone of the claim submitted to an insurer or to a government payer like Medicare or Medicaid.

After the claim goes out, accountants track it through a slow and often unpredictable payment pipeline. Reimbursement timelines vary widely by payer and by the complexity of the claim, with payments sometimes arriving in a few weeks and frequently stretching well beyond 60 days. The team watches for discrepancies between what was billed and what was paid. When a claim is denied, they review the adjustment reason codes and decide whether to resubmit, appeal, or write off the balance. Roughly one in five claims submitted to insurers gets denied at first pass, so denial management is a daily reality rather than an occasional inconvenience.

Reimbursement gets more tangled when a patient carries multiple insurance plans. Coordination-of-benefits rules dictate which insurer pays first and which covers remaining eligible charges.1Centers for Medicare & Medicaid Services. Coordination of Benefits and Recovery Overview Getting this order wrong creates duplicate billing errors and clawback demands from payers. For Medicaid beneficiaries, all other available third-party resources must pay before Medicaid covers anything.2Medicaid.gov. Coordination of Benefits and Third Party Liability

Most of these transactions happen electronically. Payers send back an Electronic Remittance Advice (the 835 transaction under HIPAA standards) that shows exactly how each claim was adjudicated. The remittance includes claim adjustment group codes assigning financial responsibility for unpaid balances, reason codes explaining the adjustment, and remark codes with further detail.3Centers for Medicare & Medicaid Services. Remittance Advice Resources and FAQs Accountants reconcile those remittances against the original claims to confirm every dollar is accounted for.

Which Accounting Method and Standards Apply

Healthcare providers reimbursed by Medicare on a cost basis must use accrual accounting. Revenue is recorded when it is earned and expenses when they are incurred, regardless of when cash changes hands. A hospital might deliver a surgery in March and not receive the insurance payment until June; under accrual, that revenue belongs to March. The one notable exception is government-run institutions already operating on a cash basis, which federal regulations allow to continue doing so with appropriate adjustments for capital expenditures.4eCFR. 42 CFR Part 413 Subpart B – Accounting Records and Reports

Financial reporting follows Generally Accepted Accounting Principles, but which set applies depends on how the organization is structured. Private and non-profit healthcare entities follow standards set by the Financial Accounting Standards Board, whose codification is the sole authoritative source of GAAP for non-governmental entities.5Financial Accounting Standards Board. Accounting Standards Updates Issued Government-owned or government-affiliated medical centers follow a parallel framework from the Governmental Accounting Standards Board.6Governmental Accounting Standards Board. GASB Publishes New Standards for Reporting Health Insurance and Other Retiree Benefits Applying the wrong framework isn’t a minor bookkeeping issue. It can undermine credibility with creditors, bond investors, and regulators who expect financial data in the format that matches the entity type.

A significant shift in revenue recognition came with ASC 606, the FASB standard covering revenue from contracts with customers. Under ASC 606, net service revenue is recognized when the provider satisfies its performance obligation by delivering care, and the amount recorded reflects the consideration the provider actually expects to collect, not the gross charge.7U.S. Securities and Exchange Commission. Significant Accounting Policies (Policies) Estimated price concessions, both explicit ones like contractual discounts and implicit ones like self-pay adjustments, get baked into the revenue figure from the start rather than being subtracted later as a separate line item.

What Healthcare Financial Records Look Like

Healthcare financial records look different from those in other industries because of the gap between what a provider charges and what it actually collects. That gap is dominated by contractual allowances, which are the difference between a provider’s list price for a service and the lower rate negotiated with an insurer. If a hospital bills $5,000 for a procedure but the insurer’s contract sets the allowed amount at $3,000, the $2,000 difference is recorded as a contractual allowance. The books reflect the realistic collectible amount, not the sticker price.

Charity care creates another distinct category. This covers services provided at no charge or a reduced charge to patients who meet the organization’s financial assistance criteria and are not expected to pay. Accountants track charity care separately from bad debt, which represents amounts owed by patients who had the ability or responsibility to pay but did not after repeated billing attempts. Lumping the two together would distort the picture of a facility’s financial health. Charity care is a deliberate community benefit; bad debt is a collection failure.

Patient accounts form the foundation of all this recordkeeping. Every charge, payment, adjustment, and write-off is documented individually. A mid-sized hospital can process hundreds of thousands of claims a year, so accurate categorization at the transaction level is essential. An error that looks small on one account multiplies fast across a full fiscal year.

Federal Filings and Cost Reports

Non-profit hospitals and other tax-exempt organizations must file IRS Form 990 by the 15th day of the fifth month after their fiscal year ends. For organizations on a calendar year, that deadline is May 15. An automatic six-month extension is available by filing Form 8868.8Internal Revenue Service. Annual Exempt Organization Return Due Date Hospital organizations attach Schedule H, which details community benefit activities, financial assistance provided, and compliance with Section 501(r).9Internal Revenue Service. Requirements for 501(c)(3) Hospitals Under the Affordable Care Act – Section 501(r)

Providers that participate in Medicare face a separate reporting obligation: the annual cost report filed on Form CMS-2552-10. The report breaks the facility’s expenses down in granular detail, separating direct salaries and wages from contracted labor and other costs, then stripping out costs that Medicare reimbursement principles don’t allow. Operating expenses unrelated to patient care are not reimbursable, and luxury items or services substantially more expensive than what is generally necessary are not allowable either. Costs incurred from related organizations can only be included at that organization’s actual cost, and never more than what a prudent buyer would pay for comparable services elsewhere.10HHS.gov. Provider Reimbursement Manual – Form CMS-2552-10 Instructions Getting these adjustments wrong can trigger retroactive recoupment from CMS.

Compliance Rules That Shape the Work

Section 501(r) for Tax-Exempt Hospitals

Non-profit hospitals holding tax-exempt status under Section 501(c)(3) face additional federal requirements under Section 501(r). The rules apply on a facility-by-facility basis, so a system operating five facilities must meet them at each one independently.9Internal Revenue Service. Requirements for 501(c)(3) Hospitals Under the Affordable Care Act – Section 501(r) Each facility must conduct a community health needs assessment every three years and adopt a plan to address the needs it identifies,11Internal Revenue Service. Community Health Needs Assessment for Charitable Hospital Organizations – Section 501(r)(3) maintain a written financial assistance policy and an emergency medical care policy, limit charges to financial-assistance-eligible patients to no more than amounts generally billed to insured patients, and follow specific rules before pursuing extraordinary collection actions.

A hospital that fails to complete its community health needs assessment faces a $50,000 excise tax per facility for each year it falls short, applied separately to each facility that misses the requirement.12Internal Revenue Service. Taxes for Failure to Meet the Requirements of Section 501 Broader noncompliance can lead to revocation of tax-exempt status. Accountants at these organizations document community benefit activities, track financial assistance provided, and report the results on Schedule H.

HIPAA and Patient Data

Healthcare accountants handle protected health information every day. Patient names, dates of service, insurance IDs, and diagnosis codes all move through billing and accounting systems, placing accounting departments squarely under HIPAA’s privacy and security rules. When a provider outsources billing or accounting to a third-party firm, that firm qualifies as a business associate under HIPAA and must sign a formal agreement before touching any patient data. The agreement must describe how the firm can use protected health information, prohibit disclosures beyond what the contract allows, and require appropriate safeguards. If the provider discovers a material breach and cannot fix or terminate the arrangement, it must report the situation to the HHS Office for Civil Rights.13HHS.gov. Business Associates

HIPAA also requires covered entities to maintain logs of certain disclosures of patient information, specifically those falling outside treatment, payment, and operations. These logs must be kept for at least six years and include the date of disclosure, the recipient’s name and address, a description of what was disclosed, and the reason. Accounting departments that touch patient data for billing, auditing, or reporting need systems in place to generate those records on request.

Fraud and Abuse Laws

Three federal laws form the backbone of healthcare fraud enforcement, and each has direct implications for how accounting departments handle transactions.

The Anti-Kickback Statute prohibits offering or receiving anything of value in exchange for patient referrals involving federal healthcare programs. “Anything of value” is interpreted broadly, from cash and free rent to above-market consulting fees and event tickets. The law provides narrow safe harbors for legitimate arrangements like fair-market-value leases and bona fide employment relationships, but every element of a safe harbor must be met. Any financial arrangement between the provider and an outside vendor or physician needs to be structured and documented well enough to withstand scrutiny.

The Stark Law, the physician self-referral law, flatly prohibits physicians from referring Medicare or Medicaid patients for certain services to entities where the physician or an immediate family member has a financial relationship, unless a specific exception applies. Stark is a strict-liability statute, so intent does not matter. If the financial relationship exists and no exception covers it, the referral violates the law regardless of whether anyone meant to break it. Accountants track physician compensation arrangements and ownership interests to keep referral patterns within legal boundaries.

The False Claims Act is the government’s primary tool for recovering money lost to fraudulent billing. It covers upcoding (billing for a more expensive service than was actually provided), unbundling (billing separately for services that should be billed together), and billing for services never rendered. Civil penalties currently range from roughly $14,000 to $28,000 per false claim, plus treble damages, meaning three times the amount the government overpaid. Because a single billing pattern can generate thousands of individual claims, exposure adds up fast.

340B Drug Pricing Program

Hospitals that participate in the federal 340B Drug Pricing Program work under a separate audit track. The program allows eligible facilities to purchase outpatient drugs at significantly reduced prices, but HRSA has statutory authority to audit participating entities for adherence to eligibility rules, the prohibition on diverting discounted drugs to ineligible patients, and the duplicate discount prohibition on claiming both 340B pricing and Medicaid rebates on the same drug. Non-compliance can require the facility to repay manufacturers for discounts it should not have received, or lead to removal from the program entirely.14HRSA. Program Integrity Accounting teams at 340B-covered entities keep clean records separating 340B-purchased inventory from regular inventory and tracking which patients and payers are associated with each dispensed drug.

Financial Statements and Audits

The accounting cycle produces standardized financial statements, including the balance sheet and the statement of operations. The balance sheet captures the facility’s assets, from medical equipment and real estate to cash reserves, alongside liabilities like outstanding loans and vendor payables. The statement of operations shows whether the facility is covering its costs, with net patient service revenue reported after all contractual adjustments and price concessions.7U.S. Securities and Exchange Commission. Significant Accounting Policies (Policies) Board members, lenders, and bond rating agencies rely on these documents to evaluate financial viability.

Internal audits work as the first line of defense. Staff auditors periodically check that billing codes match the underlying medical records, that internal controls are functioning as designed, and that payments are being applied correctly. These reviews catch patterns, like a coder consistently assigning higher-level evaluation codes than the documentation supports, or a department routinely failing to post contractual adjustments, before they become systemic problems or draw external attention.

External audits are conducted by independent firms that examine sample transactions, bank reconciliations, and internal control structures to verify that the financial statements conform to the applicable accounting standards. A clean opinion, technically an “unmodified opinion,” confirms that the financial statements fairly represent the organization’s financial position. A qualified opinion, an adverse opinion, or a disclaimer signals problems that can rattle lenders and regulators alike.