Ungroupable DRG.
Group code
CO or PI
Category
Benefit Maximum/Limitation
Risk level
Medium
Appealable
Review Required
Common RARC pairings
RARCs (Remittance Advice Remark Codes) provide the specific reason detail alongside CARC A8 on the 835 electronic remittance. These are the RARCs seen most often with this CARC.
| RARC | Meaning |
|---|---|
| N647 | Adjusted based on diagnosis-related group (DRG). |
| N657 | This should be billed with the appropriate code for these services. |
See the full resolution workflow for CARC A8
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