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CARC
CO-22
CARC
CO — Contractual Obligation
Coordination of Benefits
Quick Facts
Code
CO-22
Type
CARC
Category
Coordination of Benefits
Status
Active
This care may be covered by another payer per coordination of benefits
What Does This Code Mean?
The payer believes another insurance plan is primary and should be billed first before this payer considers the claim.
Common Causes
- Patient has multiple active insurance plans
- COB information on file with the payer is outdated
- Patient recently changed jobs or plans
- Medicare Secondary Payer questionnaire not completed
Recommended Next Steps
- Confirm current COB order directly with the patient
- Update payer records with correct primary/secondary designation
- Bill the primary payer first, then submit to this payer with the primary EOB attached
- Have the patient contact the payer's COB unit if records are wrong
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Educational reference only — not medical or legal advice. Always confirm code usage and appeal rights with the specific payer.