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N900 Remark Code: Therapy Notes or Report Missing

N900 means therapy notes or a therapy report were not received. The payer needs the treatment documentation for the visit or period billed, such as daily notes or a progress report, before it will pay.

Quick facts

Code
N900 (RARC N900)
Status
Active In use since July 1, 2024.
Code set
Remittance Advice Remark Codes (RARC)
Group codes
  • CO (Contractual Obligation): The unpaid therapy charges pending documentation. The provider must supply the notes; the patient is not billed.
Official description
Missing Therapy Notes/Report.
X12 Remittance Advice Remark Codes, retrieved September 25, 2026
Last verified
against the official X12 list.

What N900 means

Therapy claims are billed visit by visit, and payers often review them to confirm each service was provided and documented. N900 means the payer reviewed or tried to review the claim and found no therapy notes or report on file.

The problem is absence, not quality. Nothing usable arrived.

Common causes

  • A records request went unanswered or was answered late.
  • Notes were sent under a different claim number or patient ID.
  • The claim referenced an attachment that was never transmitted.
  • Only the evaluation was sent, not the notes for the dates billed.

How to fix it

  1. Confirm the dates of service on the denied lines.
  2. Pull the signed treatment notes for those dates and any progress report covering them.
  3. Submit them through the payer’s accepted channel, clearly labeled with the claim number, and keep proof of submission.
  4. Ask for reprocessing, or file a reconsideration if the payer has finalized the denial.

How to prevent it

Make sure notes are signed promptly so they are ready to send, and monitor payer records requests daily. See CO-16 denials for more on documentation-driven denials.

Codes that may appear with N900

  • CO-252 (An attachment/other documentation is required to adjudicate this claim/service.): Documentation is required to adjudicate the claim; N900 names therapy notes.
  • CO-163 (Attachment/other documentation referenced on the claim was not received.): An attachment referenced on the claim was not received.
  • N901 (Incomplete/Invalid Therapy Notes/Report.): The therapy notes arrived but were incomplete or invalid.
  • N465 (Missing Physical Therapy Notes/Report.): An older, discipline-specific code for missing physical therapy notes or report.
  • N899 (Missing Initial Evaluation Report.): The initial evaluation, rather than ongoing notes, is missing.

N900 FAQ

Which therapy disciplines does N900 cover?

The code is not limited to one discipline. It can apply to physical, occupational, speech, or other therapy, depending on the payer.

Should I send daily notes or a progress report?

Send what the payer asked for. If the request is general, include the treatment notes for the billed dates and the most recent progress report covering them.

How is N900 different from N465?

N465 refers specifically to physical therapy notes. N900 is a general therapy version that payers can use across disciplines.