Medicaid recoupment: what to do when the payer takes money back.
A denial is money you never had. A recoupment is money you already counted, already paid caregivers against, and already closed the month on. The response is different, and the deadline is often shorter than the appeal window on a normal denial.
Why Medicaid takes money back
Post-payment audits by state program-integrity units and MCO special-investigation units. Under 42 CFR 433.316, states must give written notice of an overpayment and refund the federal share within a year of discovery, which is why audit letters cluster near the state's own deadline.
EVV findings. Visits that paid are audited retroactively against the aggregator record and often recouped as a lump amount rather than line by line.
Retroactive rate and eligibility changes. A member's eligibility is redetermined effective an earlier date, or a rate table is corrected retroactively, and paid claims are reversed to match the new record.
How it shows up on the remittance
Recovery usually comes as an offset, not a demand letter. On the 835, a claim reversal appears when the original claim reappears with the payment backed out. A provider-level offset appears in the PLB segment with code WO, netting an overpayment against the current check.
A lump recoupment gives a number without the accounting. You are entitled to claim-level detail, so request it in writing before the appeal window closes. Without the detail, there is nothing specific to appeal.
The order of operations
Find the deadline first. Recoupment appeal windows are commonly 30 to 60 days from the notice or remittance date. If it arrived silently as an offset, request the written determination immediately so the clock starts from a document you can point to.
Reconcile the payer's list against your records. For each claim, verify delivery, an active authorization, an EVV record, and the correct contracted rate. Anything the payer cannot support with its own record is a candidate for appeal.
Appeal what is wrong in writing inside the window. One page per claim with the specific evidence attached. Pay or absorb what is right and fix the upstream cause so the same category does not recur.
Report what you find yourself. Section 1128J(d) of the Social Security Act requires providers to return identified overpayments within 60 days of identification. Self-reporting a small finding is cheaper than a later audit of the same pattern.
The real lesson
A recoupment is a delayed audit of billing work from months ago. The agencies that stop getting them are not the ones with faster appeals; they are the ones that close the gap between delivery, authorization, EVV capture, and billing before the claim ever goes out. The recoupment queue shrinks when the pre-submission review gets tighter.
Plain answers, on the record.
Collect is money you never captured. Cover is money a payer can still take back.
Reeve reports the two separately and never adds them together, because only one of them is yours to go and get. The Margin Review reads both on your own export and costs nothing.
One pass over your own export, in your browser. The findings are yours to keep, with no obligation.
The recovery lane. Care you delivered and never billed, units short of what was authorized, lines paid under the published rate.
Everything in Collect, plus the exposure lane. Retired codes, authorizations at the end of their period, care delivered past what was approved.
Month to month, no annual contract. Read-only in every tier. Run the free review.
See where recoupments are coming from.
The Margin Review reads your remittances for PLB WO offsets and claim reversals and traces each one back to the upstream category that produced it.