Which denial codes appear with N265?

N265 commonly rides with CO 16. The adjustment code says the claim was reduced; the remark code says why.

Remark code

N265 denial code

The NPI of the provider who ordered the service is missing, incomplete or wrong.

A correction, not an appeal

A remark code is not the denial. The adjustment code says the claim was reduced. This one says why. You need both to know what to send back.

What to do

Put the ordering provider's NPI in the ordering provider field and check that the name matches that NPI exactly. On a Medicare claim, also check that the ordering provider is enrolled in Medicare or has validly opted out, because the claim is checked against that record. Correct and resubmit.

Codes it appears with

N265 commonly rides alongside these. Our reading, not a published mapping: X12 publishes no adjustment-to-remark table.

Code	What that one means
CO 16	Something the payer needed was missing or wrong on the claim.

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