CARC 29: Filing limit expired
The claim reached the payer after its timely filing deadline.
Group code context
Usually sent with group code CO (contractual obligation): under your contract you cannot bill the patient for this amount.
Common causes
- Claim never reached the payer and the rejection was not worked
- Claim sent to the wrong payer first
- Late charge entry
Step-by-step fix
- Look for proof the claim was sent on time, such as a clearinghouse acceptance report or payer acknowledgment
- If you have proof, send it with a reconsideration request
- If there is no proof, the amount usually has to be written off
Appeal guidance
Appeal with proof of timely filing, such as a clearinghouse acceptance report (999 or 277CA) dated within the limit.
When not to appeal
Do not appeal without proof. Under most contracts you cannot bill the patient for it either.
Prevention checklist
- Work clearinghouse rejections every day
- Know each payer's filing limit and track claims against it
- Enter charges within a few days of the visit
Related codes
CARC 109: Not covered by this payer, send to the correct payer
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Source and review
Official source ↗Last checked: 2026-10-05
Reviewed by: PracticeVendors editorial team
Educational reference. Confirm payer instructions and applicable contracts before taking action.