Recoupment in Medical Billing: What It Means and How to Respond

By Awais Afzal, Healthcare Operations & Data Analyst · Published February 23, 2026 · Updated October 14, 2026

Recoupment in medical billing is when a payer takes back money it overpaid you, usually by deducting it from your current or future payments. It follows a notice and a response window. Respond inside that window, because the dates on the notice decide whether you can dispute, appeal or stop the deduction.

This guide explains what recoupment means, why payers do it and how the Medicare timeline works. It also covers how commercial rules differ and what to do when a notice arrives. It is written for practice owners and billing managers, not for coders.

What recoupment means in medical billing

Recoupment is a payer recovering money it says it overpaid you. The payer usually does it by holding back the amount from your current or future payments instead of waiting for you to send a check. CMS describes recoupment this way for Medicare: the amount is taken from current or future payments once the repayment window closes.

An overpayment is a payment that is more than the amount due under the payer’s rules. For Medicare, CMS lists four common routes: duplicate submissions, payment to the wrong payee, payment for excluded or medically unnecessary services, and a pattern of excessive or non-covered services. Its fact sheet also names incorrect coding, insufficient documentation, medical necessity errors and processing errors as causes.

Recoupment, refund request and denial are different

• Refund request: the payer asks you to send the money back. Recoupment is what may follow if you do not pay or dispute it in time.
• Denial: the payer refuses to pay a claim. No money has moved yet. Recoupment happens after payment was made.
• Underpayment: the payer paid too little. It is the opposite problem and has its own follow-up (see our guide to denial management in medical billing).

Recoupment is not proof of fraud. Most overpayments come from ordinary errors in coding, documentation or claim processing. The risk comes from ignoring them: a practice that knowingly keeps an overpayment past the deadline can face False Claims Act exposure under the federal rule covered below.

Why payers recoup money

Payers recoup when a review, audit or later claim shows they paid more than they should have. Many of the triggers start in your own billing workflow, so most are preventable.

Source: CMS Medicare Learning Network, Medicare Overpayments fact sheet (2025), for the causes. Prevention column is general practice guidance.

A payer may also find overpayments through an audit. Medicare uses Recovery Audit Contractors for this work. Our guide to RAC audits explains how those reviews run.

How the recoupment process works, step by step

Most recoupments follow the same path: the payer finds the overpayment, sends notice, gives you a window to respond, and then recovers the money. The details differ sharply between Medicare and commercial plans, so find out which rules apply before you act.

1. The payer finds the overpayment. It may come from an audit, a claim review or a processing correction.
2. You receive notice. Medicare sends a demand letter. Commercial payers send a letter, portal message or a line on a remittance. Read every payment adjustment, not only the cover letter.
3. You review the claim. Pull the original claim, the remittance, the documentation and the payer’s calculation. Decide whether the payer is right, partly right or wrong.
4. You respond inside the window. Either repay, dispute or appeal, or ask for a payment plan. Missing the window is the most expensive mistake.
5. You record the outcome. Post the recovery against the correct claim, close the file and note the cause so it does not repeat.

The Medicare timeline: what happens on which day

For Medicare fee-for-service, the clock starts on the date of the demand letter, and recoupment can begin on day 41. CMS publishes the schedule in its Medicare Overpayments fact sheet (July 2025). A Medicare Administrative Contractor (MAC) sends a demand letter when an overpayment is $25 or more.

Source: CMS MLN fact sheet MLN006379, Medicare Overpayments (July 2025); CMS Overpayments podcast transcript; 42 CFR 405.379.

How an appeal changes recoupment

Under 42 CFR 405.379, a timely and valid redetermination request makes the contractor stop recoupment of the disputed amount, or not start it. The same applies to a timely reconsideration request. If the redetermination fully affirms the overpayment, recoupment may resume on the 60th calendar day after the notice of redetermination, unless you file a valid reconsideration request with the Qualified Independent Contractor.

The regulation at 42 CFR 405.942 counts the 120 days from when you receive the notice, and presumes receipt five days after the date on the notice. Work from the date printed on the letter and you will never run late.

If you cannot repay at once

CMS says a provider that cannot repay in full can ask the contractor for an extended repayment schedule. The demand letter explains how to request one. If a debt stays unpaid and unrecouped with no valid appeal, CMS says an intent-to-refer letter follows and the debt may be referred to the Department of the Treasury.

Commercial payers: check the contract and your state

For commercial plans there is no single federal timetable. Your provider contract, the payer’s manual and state law set the notice, response and appeal rules. Read the overpayment section of each major contract once, and keep the key dates in one place.

Texas shows how specific a state rule can be. 28 Texas Administrative Code 21.2818 covers refund requests under that state’s clean-claim rules. It requires notice of an overpayment within 180 days of the payer receiving it, in writing, listing the specific claims and amounts, the reasons, the right to appeal and how the payer plans to recover. The provider has 45 days from receipt to give written notice of disagreement. The rule contains an exception for fraud or material misrepresentation. Your state may differ, and the rule’s scope depends on the plan type.

Source: CMS MLN006379 (2025); 42 CFR 405.379; 42 CFR 405.942; 28 TAC 21.2818 (Texas Department of Insurance). Texas is one example only.

Rules also vary by specialty, because contracts, code sets and audit targets differ. Our specialty billing pages show how billing patterns change from one specialty to the next.

What to do when a recoupment notice arrives

Do not ignore it and do not pay it blindly. Read the notice, calendar every date, then decide with the claim in front of you.

1. Record the date on the notice and the payer’s response deadline. Put the earliest protective date in your calendar, including appeal and recoupment-stop dates.
2. Match the notice to claims. List each claim, the amount paid, the amount the payer says was correct and the reason given. If the notice lacks claim detail, ask for it in writing.
3. Check the original payment. Compare the remittance, the claim as billed, the documentation and the payer’s policy in force on the date of service.
4. Decide per claim: agree, dispute or partly agree. If the payer is right, repay or arrange a payment plan. If it is wrong, appeal with evidence, in the required form, before the deadline.
5. Ask about the repayment method. Some payers will let you repay by check or net the amount against future payments. Choose the option that fits your cash flow, and get it in writing.
6. Record and learn. Post the recovery, tag the cause and fix the process behind it.

Your own duty: report and return overpayments you find

If you find an overpayment yourself, Medicare law expects you to report and return it. 42 CFR 401.305 says a person who has received an overpayment must report and return it. It sets the deadline at 60 days after the overpayment was identified (or the cost report due date, if later).

• What counts as identified: the rule says a person has identified an overpayment when they knowingly receive or retain it. “Knowingly” has the meaning used in the False Claims Act.
• Time to investigate: the 60-day deadline is suspended during a timely, good-faith investigation, for up to 180 days from the date the first overpayment was identified.
• Lookback: you must report and return an overpayment you identify within 6 years of receiving it.
• How to report: use the contractor’s claims adjustment, credit balance, self-reported refund or other reporting process.
• Penalty: an overpayment kept after the deadline is treated as an obligation for False Claims Act purposes.

The eCFR page shows this section as amended on December 9, 2024. Have your compliance adviser confirm how that amendment applies to your practice.

How to prevent recoupment

Prevention means catching errors before the claim leaves and noticing payment errors soon after it is paid. Four habits do most of the work.

• Verify coverage and eligibility first. A claim for a lapsed or changed plan is a common source of repayment requests. See our insurance verification guide.
• Scrub claims before submission. Duplicate, mismatched and incomplete claims are cheaper to fix before billing. Our clean claims guide covers the checks.
• Compare payments to what you expected. If a payment is higher than the contract allows, report it now. It is easier to correct in a month than in a year.
• Work the whole balance, not only denials. Overpayments, credits and negative balances belong on the same worklist as unpaid claims. See accounts receivable in medical billing for the follow-up routine.

A practice management system that tracks claims by stage makes this easier, because each claim has an owner, a status and a next step. If you want outside help, our A/R follow-up and management service covers payer follow-up, including overpayment notices.

Our recommendations

1. Calendar the notice date and every deadline. On the day a notice arrives, record the letter date, the payer’s response window and the earliest date recoupment can start. Count from the date printed on the letter.
2. Match every notice to specific claims. Ask for claim-level detail if the notice lacks it. Do not repay a lump sum that you cannot trace to claims.
3. Dispute with evidence, in the required form. Send the original claim, remittance, documentation and the policy in force on the date of service. Use the payer’s appeal channel and keep proof of delivery.
4. Know your payer contracts. Read the overpayment and appeals clauses of your top payers. Note the notice limit, response window and how the payer may recover the money.
5. Report overpayments you find. Set a routine to review credit balances and unusually high payments. If you find an overpayment on a Medicare claim, start the 60-day clock and the repayment process.
6. Assign one owner. Make one person responsible for overpayment notices, with a backup. Notices that sit unopened are how deadlines get missed.

Bottom line

Recoupment is a payer taking back an overpayment, and the date on the notice controls what you can do about it. Know the rules for each payer, dispute with evidence, and report overpayments you find. If you want help with the process, see our denial management service or talk to our team.

Frequently asked questions

What is recoupment in medical billing?

Recoupment is when a payer recovers money it overpaid you, usually by deducting it from your current or future payments. It happens after payment, unlike a denial. Causes include duplicate billing, coding errors, missing documentation and coverage problems. You can dispute it if you believe the payer is wrong.

What happens if I ignore a recoupment notice?

For Medicare, interest starts on day 31 of the demand letter, recoupment can begin on day 41, and an unpaid debt may be referred to the Treasury. Commercial payers follow their contract and state law, and may deduct the money from later payments. Acting inside the notice window keeps your options open.

How long do I have to respond or appeal?

For Medicare, file a redetermination within 120 days of receiving the notice, and within 30 days if you want recoupment stopped on day 41. For commercial payers the window comes from your contract and state law. In the Texas rule, for example, it is 45 days from receipt of notice. Always use the date on the letter.

Is recoupment the same as a refund request?

No. A refund request asks you to send the money back. Recoupment is the payer taking it back itself, typically by withholding it from later payments. A refund request often comes first, and recoupment follows if you do not pay or dispute it in time.

Can a payer recoup money years after paying a claim?

It depends on the payer, contract and state. Texas, for one, requires notice of an overpayment within 180 days of receipt under its rule, with a fraud exception. Medicare has separate rules. Separately, a provider who finds an overpayment must report and return it within 6 years of receipt. Check your contracts.

How do I reduce the risk of recoupment?

Verify coverage before visits, scrub claims before submission, review coding and documentation regularly, and compare each payment to what you expected. Report overpayments you find promptly. Keep a log of every notice so you can spot repeat causes by payer or code.

Sources

1. Medicare Overpayments (MLN006379) — CMS Medicare Learning Network (2025)
2. Medicare overpayments podcast transcript — CMS (n/d)
3. 42 CFR 401.305 Requirements for reporting and returning of overpayments — eCFR (2024)
4. 42 CFR 405.379 Limitation on recoupment — Cornell LII (eCFR text) (n/d)
5. 42 CFR 405.942 Time for filing a request for redetermination — Cornell LII (eCFR text) (n/d)
6. 28 TAC 21.2818 Refund of overpayments — Texas Department of Insurance (via Justia) (2025)