Coordination of Benefits

CARC/RARC Description
CO-22 This care may be covered by another payer per coordination of benefits.
N598 Health care policy coverage is primary.


Common Reasons for Message

  • Patient has another insurance primary to Medicare
  • Patient's coordination of benefits is not up-to-date

Next Step

  • After billing primary insurance, submit secondary claim to Medicare
  • If patient's coordination of benefits has been updated to reflect Medicare as primary, submit primary claim to Medicare

Claim Submission Tips

View reason code list, return to Reason Code Guidance page.


Last Updated Apr 07, 2020