CARC 29CO · Contractual Obligation
The claim was submitted after the payer's deadline for timely filing.
- Common causes
- The claim sat unsubmitted too long, was rejected and not corrected in time, or the payer's timely filing window (often 90 to 365 days) was miscalculated.
- Suggested fix
- Check the payer's timely filing limit and whether an exception applies (such as retroactive eligibility); if eligible, file an appeal with proof of timely original submission.
Related Contractual Obligation codes
107This claim depends on another related claim or service being referenced, but that link wasn't provided.11The diagnosis code doesn't support medical necessity for the procedure billed, based on the payer's coverage edits.13The claim shows a date of service after the patient's recorded date of death.146The diagnosis code billed wasn't a valid, active code as of the date of service.150The documentation submitted doesn't justify the complexity or level of the service billed, commonly seen with evaluation and management visit levels.16The claim is missing required information or contains a billing error that prevented the payer from processing it.170This payer doesn't reimburse this specific provider type for this service.171This payer doesn't cover this service when it's billed by this provider type in this particular facility setting.
Frequently asked questions
What does CARC 29 mean?
The claim was submitted after the payer's deadline for timely filing.
How do I resolve CARC 29?
Check the payer's timely filing limit and whether an exception applies (such as retroactive eligibility); if eligible, file an appeal with proof of timely original submission.
Why does CARC 29 happen?
The claim sat unsubmitted too long, was rejected and not corrected in time, or the payer's timely filing window (often 90 to 365 days) was miscalculated.
CARC codes maintained by X12 (x12.org). Descriptions on this site are original reference interpretations. Always verify codes with authoritative sources before making billing decisions.