N265: Missing/incomplete/invalid ordering provider primary identifier
The claim is missing the ordering provider's NPI, or the NPI submitted is invalid or does not match an enrolled ordering/referring provider in the payer's system.
Corrective actions
- 1
Verify the ordering provider's NPI
Look up the ordering provider's NPI in the NPPES registry and confirm it is active and correctly entered on the claim.
- 2
Confirm the ordering provider is enrolled with the payer
For Medicare, confirm the ordering provider has an active Medicare enrollment record (PECOS), since claims for services ordered by unenrolled providers will continue to reject even with a correct NPI.
Denial codes it is usually paired with
N265 is the detail behind a CARC rather than an adjustment in its own right. These are the denial codes our dataset records it alongside.
Retrieved 2026-07-18.
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Denial7 provides billing and administrative guidance based on published CMS and X12 sources. It is not medical advice, not a coverage determination, and not a guarantee of payment. NCCI and MUE edits are republished quarterly and payer policies vary by contract. Always confirm against the payer's own current policy before submitting or appealing.