N54 remark code
An authorization exists, but something on the claim doesn't match what it approved.
“Claim information is inconsistent with pre-certified/authorized services.”
Start 01/01/2000 · X12 remark code list
What it usually means in behavioral health
N54 usually rides with 197, 198, or A1. The authorization is real; the claim drifted from it.
Behavioral health claims drift in predictable places: a per diem billed under a different code than the one authorized, a rendering clinician who isn't the provider on the authorization, or units that exceed the approved frequency.
Common causes
- Billed code differs from the authorized code, for example a different per diem or psychotherapy code
- Units or days exceed what was approved
- Rendering or billing provider differs from the one on the authorization
- Dates of service fall outside the authorized span
- Level of care billed differs from the one authorized
Correct and resubmit, or appeal?
Compare the claim with the authorization record. If the claim is wrong, correct it. If the service changed for a documented clinical reason, ask the payer to update the authorization if its rules allow, then rebill; appeal only when the payer refuses an update the record supports.
What to do
Put the claim and the authorization side by side: code, units, dates, provider, and level of care.
Correct the field that drifted, or request an authorization update if the care itself changed.
Resubmit, and log which field drifted so scheduling or billing can prevent the repeat.
Often seen with
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