Remittance advice remark code
Remark code MA04 meaning
RARC MA04: This secondary claim cannot be paid without the primary payer's identity or payment details.
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- Remark code
- RARC MA04
- Short name
- Primary payer information needed
- Plain meaning
- This secondary claim cannot be paid without the primary payer's identity or payment details.
- 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 the primary payer's name, ID and payment or adjustment amounts to the claim.
- Attach the primary payer's remittance if sending on paper.
Reason codes it often comes with
Related remark codes
Related pages
Questions
What does remark code MA04 mean?
This secondary claim cannot be paid without the primary payer's identity or payment details. This is Rivvi's plain-English summary of RARC MA04. X12's exact wording is on x12.org.
What should I do about MA04?
Add the primary payer's name, ID and payment or adjustment amounts to the claim. Attach the primary payer's remittance if sending on paper.
Is MA04 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 22, 23.
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.