Skip to main content

Remittance Advice Remark Code

EOB denial code N1: what it means

RARC

N1RARCTypically appealable

What it means

This is an alert telling you that you have the right to appeal this decision in writing, within the time limits set by your plan or state law.

Official X12 description

Alert: You may appeal this decision in writing within the required time limits following receipt of this notice by following the instructions included in your contract, plan benefit documents or jurisdiction statutes. Refer to the URL provided in the ERA for the payer website to access the appeals process guidelines.

Typical cause

Attached to a denial to notify you of your appeal rights. It is informational, not itself a denial reason.

What to do next

  1. 1Note the appeal deadline in your plan documents or denial letter — ERISA plans generally allow at least 180 days.
  2. 2Decode the denial reason code (the CARC) reported with this alert to know what you are appealing.
  3. 3Follow the written appeal instructions your plan provides.

This denial code is typically appealable. If it applies to your claim, you can scaffold an appeal letter matched to your plan type.

Start an appeal letter
Last verified June 16, 2026Reviewer signoff pending (dev preview)

Primary sources

The official short description above is transcribed verbatim from the X12 published code list.