CO-29: The time limit for filing has expired.

Why it fires

• The claim was submitted after the payer's contractual or regulatory filing deadline, often 90 days to one year from the date of service
• The original claim was filed on time but a corrected or resubmitted claim missed the deadline for corrections
• A delay in receiving eligibility, authorization, or coordination of benefits information pushed submission past the deadline

Corrective actions, ranked

1. 1

   Check the actual filing date

   Pull clearinghouse or EDI acceptance reports to prove the original claim was received within the deadline. A payer system delay is different from a late submission.

2. 2

   Document a good cause exception

   If the delay was caused by the payer, such as a late eligibility response or retroactive enrollment, gather proof for a timely filing appeal.

3. 3

   Fix the internal workflow

   If this is a recurring pattern, shorten the internal cycle time from charge entry to claim submission.

Is it worth appealing

Appeal aggressively when you have proof of timely original submission, such as a clearinghouse acceptance report, or a documented good cause exception like retroactive eligibility.

Other denial codes to check

Codes that share a remark code with this one, or that are reported under the same group code.

• CO-45Charge exceeds fee schedule/maximum allowable or contracted/legislated fee arrangement.
• CO-97The benefit for this service is included in the payment/allowance for another service/procedure that has already been adjudicated.
• CO-16Claim/service lacks information or has submission/billing error(s).
• CO-11The diagnosis is inconsistent with the procedure.
• OA-18Exact duplicate claim/service (Use only with Group Code OA except where state workers' compensation regulations requires CO)
• PR-151Payment adjusted because the payer deems the information submitted does not support this many/frequency of services.

See every CARC in the dataset