Remittance advice remark code
Remark code MA01 meaning
RARC MA01: The payer is telling you that you can ask for a review if you disagree with the decision, within its time limit.
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- Remark code
- RARC MA01
- Short name
- Appeal rights notice
- Plain meaning
- The payer is telling you that you can ask for a review if you disagree with the decision, within its time limit.
- Kind
- Alert. Information only, not a denial by itself.
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
- Note the appeal deadline on the remittance.
- File a redetermination or appeal with the records that support the claim.
Reason codes it often comes with
Related remark codes
Related pages
Questions
What does remark code MA01 mean?
The payer is telling you that you can ask for a review if you disagree with the decision, within its time limit. This is Rivvi's plain-English summary of RARC MA01. X12's exact wording is on x12.org.
What should I do about MA01?
Note the appeal deadline on the remittance. File a redetermination or appeal with the records that support the claim.
Is MA01 a denial?
MA01 is an informational remark (an alert). It does not deny the claim by itself. It is often paired with reason codes 50, 96.
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.