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CARC
CO-100
CARC
Eligibility
Quick Facts
Code
CO-100
Type
CARC
Category
Eligibility
Status
Active
What Does This Code Mean?
Payment made to patient/insured/responsible party.
Common Causes
- Patient's coverage wasn't active on the date of service
- Wrong member ID or plan information submitted
- Dependent/relationship status not up to date with the payer
Recommended Next Steps
- Re-verify eligibility for the exact date of service
- Confirm member ID and plan details directly with the patient or payer
- Bill any other active coverage found, or the patient per financial policy
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Educational reference only — not medical or legal advice. Always confirm code usage and appeal rights with the specific payer.