All denial codes

CARC · CO group

CO-59

Processed based on multiple or concurrent procedure rules

Contractual obligation; provider write-off unless appealed

What it means
The payer reduced payment because several procedures were performed on the same day.
Likely cause
Group plus individual therapy on one date, or an intake plus a psychotherapy session same day.
How to fix it
Verify the reduction matches published multiple-procedure policy; if the services are separately reportable, appeal with modifier support.
Revenue impact
Frequently under-appealed reduction, not a full denial.
  • reduction
  • multiple procedures

Related codes

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