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CARC
CO-6
CARC
CO — Contractual Obligation
Coding/Modifier
Quick Facts
Code
CO-6
Type
CARC
Category
Coding/Modifier
Status
Active
Procedure/revenue code inconsistent with the patient's age
What Does This Code Mean?
The billed code is not appropriate given the patient’s age on the date of service.
Common Causes
- Age-specific procedure code billed for a patient outside that age range
- Data entry error in patient date of birth
Recommended Next Steps
- Confirm the patient's date of birth is correct on the claim
- Verify the code is age-appropriate; correct and resubmit if not
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Educational reference only — not medical or legal advice. Always confirm code usage and appeal rights with the specific payer.