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29
CO - Contractual ObligationCoding/Billing
Denial Code CO-29: Timely Filing Limit Expired
What Does Code 29 Mean?
The time limit for filing has expired. The claim was not submitted within the payer's required timeframe.
Group Code CO (Contractual Obligation): The provider has agreed to accept the payer's determination. The patient is generally not responsible for this amount.
Why Does This Happen?
Claim was submitted after the payer's filing deadline (typically 90-365 days depending on payer).
How to Resolve It
- 1Check the payer's timely filing limit
- 2If within limit, provide proof of timely submission
- 3Appeal with documentation showing the claim was filed on time
- 4If truly late, document extenuating circumstances for appeal