OAReferenceCurrentVerified Aug 15, 2026Group Code OA
Other Adjustment
AR Guide interpretation
What this group code means
The adjustment is an 'other' adjustment that does not fit contract (CO) or patient (PR) responsibility. Often seen with duplicate claims and coordination-of-benefits adjustments. Handle case by case based on the accompanying reason code.
AR Guide interpretation
Common usage
- Duplicate claim adjustments
- Coordination-of-benefits adjustments
- Adjustments requiring case-by-case handling
Reading the remittance advice: Note
The group code tells you who is responsible for the adjustment amount. Combine it with the CARC and any RARC on the line to understand exactly why the amount adjusted and what to do next.