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CO-29 - Denial Journal
CARC CO — Contractual Obligation

CO-29

The time limit for filing has expired

What This Code Means

The claim was submitted after the payer’s timely filing deadline.

Common Causes

  • Claim held internally too long before submission
  • Initial claim rejected at clearinghouse and resubmission delayed
  • Wrong payer billed first, delaying the correct submission
  • Appeal filed outside the appeal window

How to Resolve or Appeal

  1. Check the payer's specific timely filing limit (varies by payer/contract)
  2. Gather proof of timely submission (clearinghouse acceptance reports, date-stamped logs)
  3. File a timely filing appeal with that proof attached
  4. Track clearinghouse rejections daily so denials like this don't recur

More Denial Codes to Check

CARC CO-210 CARC CO-18 Duplicate claim or service RARC M86 Service denied — payment already made for the same/similar procedure within a set time frame CARC CO-130 CARC CO-95 CARC CO-179 CARC CO-31 Patient cannot be identified as our insured CARC CO-81 CARC CO-243

Educational reference only — not medical or legal advice. Always confirm code usage and appeal rights with the specific payer.

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