Remittance advice remark code
Remark code N350 meaning
RARC N350: An unlisted or not-otherwise-classified code needs a description of the service, and it is missing or invalid.
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- Remark code
- RARC N350
- Short name
- Unlisted code needs a description
- Plain meaning
- An unlisted or not-otherwise-classified code needs a description of the service, and it is missing or invalid.
- Kind
- Adds detail to the reason code on the same line.
Plain-English summary written by Rivvi. X12 owns the RARC list and its exact wording, which is not reproduced here. Read it on the X12 RARC list (list dated July 1, 2026, checked October 23, 2026). This page does not decide how a claim is paid.
What to check before resubmitting
- Add a short description of the service in the claim's note field (loop 2400 or box 19).
- Attach records or an invoice if the payer asks.
Reason codes it often comes with
Related pages
Questions
What does remark code N350 mean?
An unlisted or not-otherwise-classified code needs a description of the service, and it is missing or invalid. This is Rivvi's plain-English summary of RARC N350. X12's exact wording is on x12.org.
What should I do about N350?
Add a short description of the service in the claim's note field (loop 2400 or box 19). Attach records or an invoice if the payer asks.
Is N350 a denial?
A remark code adds detail to the reason code on the same line. The reason code (CARC) and its group code decide what was denied or adjusted. It is often paired with reason codes 16, 189.
What is the difference between a RARC and a CARC?
A remittance advice remark code (RARC) adds detail to a claim adjustment reason code (CARC). The CARC says why the line was adjusted. The RARC often says what to fix.