What CO-29 means
The claim was received after the payer's filing deadline. Recoverable when you can prove the claim was actually submitted on time — or that a payer error caused the delay.
Common causes
- Claim genuinely submitted late
- Claim submitted on time but rejected/lost and resubmitted after the window
- Payer or clearinghouse processing error
How to appeal CO-29
Submit proof of timely filing — clearinghouse acceptance reports, original submission dates, or evidence of a prior on-time claim — and request reconsideration under the payer's timely-filing exception policy.
Skip the manual work
Remitavo drafts a payer-specific CO-29appeal — citing the carrier's own policy — straight from your remittance file. Send a sample and we'll show you.
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See what you're leaving on the table — free
Send a sample remittance file and we'll return a ranked recovery worklist plus three ready-to-send appeal letters. No commitment, no integration.