OA 195 denial code

Claim adjustment reason code 195. Often reported as OA 195.

Refund issued to the wrong primary payer

Unofficial reference. This is our own plain-English explanation, not the official code text. Payer rules differ. Verify with the payer and the official X12 code list. AlphaPrefix is not affiliated with X12, CMS or any payer. Data last updated Nov 11, 2026.

What 195 means

This payer paid as if it were primary when it was not, and the adjustment reflects money refunded to put the order right.

The payer found that it, or another plan, was not the correct primary payer for this service and has reversed or refunded money because of it.

Expect the claim to need billing to the payer that should have been primary, followed by secondary billing in the right order. Coordination of benefits details on the patient's file are usually the root of the problem.

Group codes seen with 195

On a remittance, 195 comes after a group code. These are the ones it is most often reported with:

• OA 195 (Other Adjustment): Used for adjustments that are neither the provider's contractual write-off nor the patient's share. It often appears with coordination of benefits, for example when another payer already paid.

The payer chooses the group code for each adjustment, so the same reason code can appear with another group code on your remittance. Read the two together. More about group codes.

Common causes

• The patient had another plan that was primary, but the claim went to this payer first.
• Coordination of benefits information changed after the claim was paid.
• A Medicare secondary payer or similar order of benefits rule put a different plan first.

What to do next

1. Confirm the correct order of benefits with the patient and with each payer.
2. Update the coverage order on the patient account before rebilling.
3. Bill the correct primary payer, then send the secondary claim with the primary remittance.
4. Track any recoupment so the payment and refund post against the right claim.

Related codes

• 22 (reason code) Another payer may be primary
• 23 (reason code) Prior payer payment affected this claim
• 109 (reason code) Not covered by this payer, send elsewhere