Denial code · Contractual Obligation (CO)
CO-29 denial code
The claim was sent after the payer's last date for it.
What the code means
Official meaning: The time limit for filing has expired.
In plain words: The claim was sent after the payer's last date for it.
The usual fix
If the claim was sent in time, gather the proof that it was sent, such as the date it went out, and ask the payer to look again.
This is general information, not advice on a specific claim.
Learn on the job
Learn on the job with real denied claims.
Working denied claims is the medical claims desk's daily work. Read a code, find what is missing, fix the claim, or write the appeal.