'Not otherwise classified' or 'unlisted' procedure code (CPT/HCPCS) was billed when there is a specific procedure code for this procedure/service.
Group code
CO or PI
Category
Coding
Risk level
High
Appealable
Review Required
Common RARC pairings
RARCs (Remittance Advice Remark Codes) provide the specific reason detail alongside CARC 189 on the 835 electronic remittance. These are the RARCs seen most often with this CARC.
| RARC | Meaning |
|---|---|
| M81 | You are required to code to the highest level of specificity. |
| N657 | This should be billed with the appropriate code for these services. |
See the full resolution workflow for CARC 189
Members of the EDI-Code Intelligence Lab get the step-by-step rework path, appeal language, root-cause drivers, and prevention checklist for every CARC and RARC pairing, plus payer-specific quirks.
Open in EDI Lab