The 60-Day Rule in Practice for Medicare Providers

Medicare providers who receive an overpayment face a hard statutory deadline. Section 6402(a) of the Affordable Care Act requires providers to report and return an overpayment within 60 days of the date it is identified, or by the date any corresponding cost report is due, whichever is later. A provider that simply lets a known overpayment sit past that deadline does not just owe the money back. Under 31 U.S.C. § 3729(b)(3), the unreturned balance becomes an obligation for purposes of the False Claims Act, exposing the provider to treble damages and per-claim penalties for conduct that started as a billing error.

The Statutory Deadline and What It Covers

The 60-day rule is codified at 42 U.S.C. § 1320a-7k(d) and implemented through 42 CFR 401.305. Both apply to any overpayment, defined as funds a provider receives or retains under Medicare or Medicaid to which the provider, after applicable reconciliation, is not entitled. The regulation adds a six-year lookback: a provider must report and return an overpayment only if it is identified within six years of the date the overpayment was received. Repayment typically runs through the same recoupment channel a Medicare Administrative Contractor uses to collect an audit finding, whether the overpayment surfaced through internal review or a government audit.

When an Overpayment Is Identified

Providers relied for years on a 2016 regulation that measured identification against reasonable diligence, a negligence-style standard requiring investigation of credible information within roughly six months. CMS replaced that standard effective January 1, 2025. Under the current rule, a provider identifies an overpayment when it knowingly receives or retains it, borrowing the False Claims Act's definition of knowing at 31 U.S.C. § 3729(b)(1)(A): actual knowledge, deliberate ignorance, or reckless disregard of the truth. Courts had already moved in that direction. In Kane v. Healthfirst (S.D.N.Y. 2015), the court held that identification occurs once a provider is put on notice of a potential overpayment, not once the amount is conclusively calculated. In practice, identification most often arrives through a Medicare Administrative Contractor's post-payment review, a Recovery Audit Contractor's extrapolation, or a denial tied to a local coverage determination; see The Medicare Audit Process: Contractors, Stages, and Deadlines for how those reviews typically unfold.

The Good-Faith Investigation Window

The current rule also gives providers a defined runway. Under 42 CFR 401.305(b)(3)(ii), once a provider identifies an overpayment but has not yet determined whether related overpayments exist from the same cause, the 60-day clock suspends while the provider conducts a timely, good-faith investigation. That suspension lasts until the investigation concludes or 180 days after the initial identification, whichever comes first. The window is not open-ended, and it does not excuse inaction. A provider that opens no investigation, or one that drags without documented progress, gets no benefit from the suspension.

A provider that knowingly sits on an identified overpayment past the deadline converts an ordinary billing error into a False Claims Act violation.

Why Early Legal Counsel Is Critical

It is critical that Medicare providers promptly retain experienced healthcare defense counsel upon receiving a subpoena, audit notice, investigative request, or other government inquiry that raises a possible overpayment. Early legal intervention can protect the provider's rights, structure a good-faith investigation that qualifies for the 180-day suspension, avoid inadvertent admissions, preserve relevant defenses, and allow counsel to communicate with the government on the provider's behalf. Delaying legal representation can significantly affect the outcome of a matter, and a mishandled overpayment can compound into a related exposure; see Medicare Billing Privilege Revocations Under 42 CFR 424.535 for one example, and Challenging Extrapolation in Medicare Overpayment Demands when the overpayment amount itself is disputed.

How Health Law Alliance Can Help

Health Law Alliance has represented Medicare providers across 2,000+ audits, including matters where an overpayment finding raised a False Claims Act exposure question under the 60-day rule. If your practice has identified a possible overpayment or received an audit notice, contact us for a free, confidential consultation.