N575 remark code

Remittance advice remark code N575. Remark codes add detail to the reason code on the same claim line.

Ordering provider name mismatch

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 N575 means

The ordering or referring provider's name on the claim does not match the name the payer has for that NPI.

N575 is a matching problem. The NPI was found, but the name sent with it does not agree with the payer's enrollment record.

It usually comes with a reason code about the ordering or referring provider and is fixed by sending the name exactly as enrolled.

Common causes

• A nickname, initial or misspelling was used.
• The provider's legal name changed and one of the records was not updated.
• The name and NPI belong to different providers.

What to do next

1. Look up the NPI in the national registry and copy the legal name.
2. Correct the name in your referring provider table.
3. Resubmit the claim with the matching name and NPI.
4. Ask the provider to update their enrollment if the payer has an old name.

Related codes

• N574 (remark code) Ordering provider type not allowed
• N264 (remark code) Ordering provider name problem
• N286 (remark code) Referring provider ID problem