The letter usually starts politely. The plan has "identified an overpayment." Then it names a number, and the number can be months of your income. The work happened, the claims were approved, and the money was paid, probably spent. In New York, a commercial plan gets 24 months from the payment date to start that take-back, and not a day more, unless it alleges fraud. Most other states set their own windows. This piece covers why these letters show up, how the clocks work, and the records that let you push back.
What is a recoupment letter?
Recoupment is the insurance word for a take-back. The plan paid your claim, and later it decides it should not have. The stated reason might be coverage that ended, notes it calls too thin, or a payment made from the wrong plan. So it demands the money back. If you do not respond, many plans simply subtract the amount from your future payments. That quiet subtraction is called an offset.
A recoupment is different from a denial. A denial comes before you are paid, and you can appeal it. A recoupment comes after. The plan reviewed the claim, approved it, paid it, and then reopened the file.
These letters can land long after the work. GPB News reported in March 2025 on a Georgia therapist who got a clawback demand a full year after payment. It covered six months of sessions the insurer had already paid. The stated reason: the insurer "paid out of the wrong plan." That is a coordination-of-benefits error, which means two plans mixed up which one should pay. The therapist had no way to see it coming. The billing was right and the payment cleared. The letter came anyway. GPB tied clawbacks like this one to Georgia therapists leaving insurance networks for private pay.
How long can an insurer claw back a paid claim?
It depends on your state and the type of plan. New York has one of the clearest shields. Under Insurance Law § 3224-b, a commercial health plan cannot start recovering an overpayment more than 24 months after you received the payment (New York State Senate, statute in effect, verified July 2026). The plan also has to send you written notice 30 days before it recovers anything. That notice must name the patient, the service date, the payment amount, the proposed change, and a reasonably specific reason. A vague code does not meet that bar.
California runs a shorter clock. Under 28 CCR § 1300.71, a plan must send its written demand within 365 days of the date of payment (California Code of Regulations via Cornell LII, verified July 2026). If you disagree, you contest in writing within 30 working days. If you agree, you repay within 30 working days.
The exceptions matter just as much as the limits:
- A fraud claim erases the clock. Both rules stop protecting you if the plan alleges fraud. New York's version also includes "abusive billing." Honest clinicians still get accused, so treat this as real.
- Self-funded employer plans sit outside state caps. Many large employers pay claims with their own money, and the insurer just runs the plan. These are called self-funded, or ERISA, plans. New York's law lists them as an exception. Many clients with big-employer cards are on one.
- Government programs run on separate rules. They are outside this article.
For New Jersey and Connecticut clinicians: your states set their own recoupment windows, and secondhand charts get them wrong often. Before you lean on a number, read the current statute or ask your state association.
Why did your claims get flagged?
Two engines drive most behavioral-health clawbacks and audits: pattern-hunting software and plan bookkeeping errors.
The software is documented. ProPublica reported in November 2024 that UnitedHealth's Optum unit ran a review program called ALERT. It was a suite of more than 50 algorithms. It flagged up to 15% of outpatient mental-health patients for review. The triggers were ordinary clinical patterns: therapy twice a week for six weeks, or more than 20 sessions in six months. By the end of 2021, regulators in California, Massachusetts, and New York had found the program illegal. New York and federal regulators found United denied more than 34,000 therapy sessions in New York alone between 2013 and 2020, about $8 million in care (ProPublica, November 19, 2024).
The program did not vanish. It got a new name. ProPublica reports that United rebranded it as the "Outpatient Care Engagement" program, which still uses claims and clinical data to flag up to 10% of cases. The patterns it hunts: more than 30 sessions in eight months, or twice-weekly sessions for six weeks or more. If your caseload includes anyone in twice-weekly work, software may be reading those claims right now. And if Optum has already called you for a "clinical review," we covered whether you have to engage.
The second engine is duller: the plan's own bookkeeping. Wrong-plan payments like the Georgia case, eligibility that changed after the fact, or two plans arguing over which one covers a client. None of those are your errors, and the demand still lands on your desk.
What to document
Documentation wins these fights, and there is proof. APA Services and the Iowa Psychological Association pushed Wellmark Blue Cross and Blue Shield of Iowa to withdraw its recoupment demands against psychologists. One practice alone faced demands totaling more than $100,000 (APA Services, August 13, 2020). The audits had penalized providers for "record-keeping deficiencies that were not outlined in the published documentation requirements." Read that twice. The payer demanded money back over rules it never published. APA's standing guidance from that fight is simple: keep records that meet the payer's own published requirements and show the service happened and was medically necessary.
Here is the file that protects you:
1. The payer's published documentation rules. Download the provider manual pages on record-keeping and save them with the date. If the rules change later, you can show which version applied when you billed. 2. A note for every billed session. Date, start and stop times, the code you billed, what you did, and why the client needs care. The note should match the claim exactly. 3. A treatment plan that explains frequency. If someone comes twice a week, write down the clinical reason. That exact pattern trips audit software. 4. Proof of every payment and its date. Keep the EOB or remittance advice. The recoupment clock starts at payment, so the payment date is evidence. 5. Dated eligibility checks. Save the confirmation each time you verify coverage. That is your defense when a plan pays from the wrong pocket. 6. A log of every letter and call. Date, name, reference number, what was said. These fights run slow, and memory is not a record.
This is the same habit that wins parity denial fights: the clinician with the dated file beats the plan with the vague letter.
What should you do when the letter arrives?
Do not pay it that day, and do not ignore it either. Work the steps:
1. Check the clock first. Find the payment date on your EOB. In New York, if the payment is more than 24 months old and the letter does not allege fraud, § 3224-b is your answer. 2. Check the letter itself. In New York it must include the patient name, service date, payment amount, proposed change, and a specific reason. A missing piece is your first pushback. 3. Ask what kind of plan it is. Fully insured, or self-funded? State caps only cover the first kind. 4. Respond in writing, on time. California allows 30 working days to contest. Other deadlines run just as fast. Send it certified and keep a copy. 5. Do not let them offset quietly. If the plan starts docking new claims, object in writing and track every dollar. 6. Call for backup. Your state association first, then a lawyer who knows health claims if the number is large. The Wellmark withdrawal happened because psychologists reported the audits instead of quietly paying.
None of this requires a lawyer on day one. It requires a folder and a calendar, plus the refusal to treat the letter as final.
Why this matters beyond one letter
Clawbacks are one more weight on a scale that was already tipping. APA's 2024 Practitioner Pulse Survey found 34% of psychologists take no insurance at all, and nearly half of that group (48%) used to be in-network (APA, December 17, 2024). Among the reasons for leaving, 82% named low reimbursement and 62% named administrative issues, the bucket where audits and clawbacks live. The math of what commercial insurers pay therapists was already hard. A letter that can undo last year's income makes it worse.
Still, this is a winnable fight. The flag software is out of your hands, and the file is the part you still control. A tight record turns a scary letter into a paperwork problem, and paperwork problems can be won, as the Wellmark psychologists showed. That is also the honest reason VibeCheck cares about this topic. It is built by a working clinician who knows this paperwork firsthand, and clean, consistent session records are the core of the defense. If you want to talk through any of this, book a call.
FAQ
How far back can an insurer recoup a paid behavioral-health claim?
In New York, 24 months from the payment date under Insurance Law § 3224-b. In California, 365 days under 28 CCR § 1300.71. A fraud allegation removes those limits, and self-funded (ERISA) employer plans are not covered by state caps. Check your own state's current statute before relying on a number.
Do I have to repay a recoupment demand right away?
No, and you should not until you have checked it. California requires a written contest within 30 working days if you disagree. New York plans must give 30 days' written notice, with specifics, before recovering anything. Confirm the payment date, the plan type, and the stated reason before any money moves.
Why was my claim flagged for review?
Often, software. ProPublica reported in November 2024 that UnitedHealth's rebranded review program still flags up to 10% of cases, hunting patterns like more than 30 sessions in eight months or twice-weekly therapy for six weeks or more. Plan bookkeeping errors, like a payment from the wrong plan, drive many of the rest.
What records give a therapist the best protection?
The payer's own published documentation rules, saved with dates, plus a note that matches every billed claim. In the Wellmark case, APA Services got recoupment demands withdrawn, including more than $100,000 aimed at one practice, after audits punished records for rules the payer never published (APA Services, 2020).
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