CARC · OA group
OA-18
Exact duplicate claim or service (other adjustment)
Other adjustment; informational or offset
- What it means
- Duplicate flagged without assigning the balance to you or the patient.
- Likely cause
- Rebilling loops between an EHR and a clearinghouse.
- How to fix it
- Trace the original claim's status before resubmitting anything, and use corrected-claim frequency codes.
- Revenue impact
- Masks unpaid originals; inflates apparent denial counts.
- duplicate
- process
Related codes
Early access
Seeing a lot of these?
Repeated OA-18 adjustments usually point to a step before submission. First Pass Paid is building pre-submission checks and a denial worklist to catch these earlier.
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