CARC 229CO · Contractual Obligation
Part of this charge wasn't considered by Medicare under specific small-business-related billing rules.
- Common causes
- Applies to specific institutional billing scenarios involving small provider or facility rules under a particular Medicare type-of-bill category.
- Suggested fix
- Review the specific Medicare billing rule cited and confirm the claim was coded per the applicable type-of-bill requirements.
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 229 mean?
Part of this charge wasn't considered by Medicare under specific small-business-related billing rules.
How do I resolve CARC 229?
Review the specific Medicare billing rule cited and confirm the claim was coded per the applicable type-of-bill requirements.
Why does CARC 229 happen?
Applies to specific institutional billing scenarios involving small provider or facility rules under a particular Medicare type-of-bill category.
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.