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State obligations to refund patient overpayments vary in both deadline and source of authority. This page explains how to find your state’s rule and what applies everywhere regardless. We deliberately do not publish a 50-state table of specific day counts here. Refund deadlines come from several different sources depending on the state (insurance codes, professional practice acts, licensing board rules, consumer protection statutes, and unclaimed property law), and they are amended without fanfare. A table of specific numbers would be wrong in some states within months of publication. What follows is how to determine your state’s rule reliably, plus the obligations that apply everywhere. Confirm your state’s current requirement with counsel or your state medical/dental board before setting your internal policy.

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The four sources of a refund obligation

Check all four for your state: more than one may apply, and the shortest governs.
Where no explicit statutory deadline exists, the practical standard is usually “promptly” or “within a reasonable time,” and licensing boards have disciplined practices under that standard. A 30-day internal policy is defensible essentially everywhere and simpler than tracking 51 different rules.

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What applies everywhere

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The federal 60-day rule, payer overpayments

For Medicare and Medicaid overpayments, 42 U.S.C. § 1320a-7k(d) requires report and return within 60 days of identification, and retaining an identified overpayment creates False Claims Act liability.CMS revised the identification standard effective January 1, 2025, replacing “reasonable diligence” with the FCA knowledge standard.1This is a federal obligation independent of any state rule, and it applies to money owed to the payer, not the patient. Determining whose money a credit balance represents is therefore the first step in every refund. See Report and return overpayments.

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Contract terms

Your payer participation agreements typically specify refund obligations for payer overpayments, often with the payer entitled to recoup by offset if you don’t. Read them; they may be shorter than any statute.

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Escheatment

Unrefunded and unclaimed, the money eventually becomes unclaimed property owed to the state, reported to the state of the owner’s last known address. Dormancy periods vary by state and property type. See Escheatment by state.

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How to determine your state’s rule

1

Ask healthcare counsel licensed in the state

The fastest and most reliable route. This is a small, cheap question for someone who already knows the answer.
2

Check the licensing board's rules and guidance

Medical, dental, or other board. Many publish guidance on billing and refund obligations.
3

Check the state insurance code

For provisions on overpayment and refund timing.
4

Check the state's unclaimed property statute

For the dormancy backstop.
5

Document what you find, with the date and the citation

Re-check annually.

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The defensible internal policy

Rather than tracking 51 rules, most multi-state groups adopt a single internal standard that meets or beats every state’s requirement:
A 30-day patient refund standard is simpler to operate and easier to defend than a per-state matrix, and it removes an entire category of tracking. If your counsel identifies a state with a shorter requirement, tighten globally rather than creating an exception.

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Multi-entity considerations

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What not to do

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Sources

  1. 42 U.S.C. § 1320a-7k(d); CMS-4205-F, published December 9, 2024, effective January 1, 2025. See Foley & Lardner, CMS Issues Final Regulations Implementing Changes to 60-day Refund Rule.
Last modified on August 27, 2026

Related topics

Your first patient refundIssue a patient refundResolve credit balances (patient and payer)Report and return overpayments (the 60-day rule)Patient refunds and credit balances, explainedUnclaimed property (escheatment) by state