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CARC
CO-109
CARC
CO — Contractual Obligation
Coordination of Benefits
Quick Facts
Code
CO-109
Type
CARC
Category
Coordination of Benefits
Status
Active
Claim not covered by this payer/contractor — send to correct payer
What Does This Code Mean?
This payer is not responsible for the claim; it should be directed to a different payer or contractor.
Common Causes
- Wrong payer ID submitted
- Patient has a different plan administrator than expected
- Claim sent to the wrong Medicare Administrative Contractor (MAC)
Recommended Next Steps
- Verify the correct payer/contractor for the patient's plan and service area
- Resubmit the claim to the correct payer
- Update the patient's insurance record in your system
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Educational reference only — not medical or legal advice. Always confirm code usage and appeal rights with the specific payer.