RARC MA04: Secondary payment cannot be considered without the identity of or payment information from the primary payer
The secondary insurer can't process this until they get the primary insurer's payment information.
What this means for your claim
When you have two plans, the secondary payer needs to see the primary payer's EOB before calculating their share. This is a standard coordination of benefits workflow.
What to do next
- 1
Ask your provider to resubmit to the secondary payer with a copy of the primary EOB attached.
- 2
If you have the primary EOB, you can provide it directly to the secondary insurer with a written request to process.
- 3
Confirm the primary claim was paid (not just processed) before resubmitting.
How to use a remark code on your EOB
Remittance Advice Remark Codes (RARC) don't usually create a charge on their own. Instead they add context to an accompanying adjustment code — explaining why a claim was reduced, what additional information is needed, or what action the provider or patient must take. Read a remark code as a clue: it tells you what to ask about and where the real issue lives.
Pair the remark with its adjustment code
A remark code almost always travels alongside a CARC adjustment. Look at the two together on your EOB — the adjustment tells you the dollar impact, and the remark tells you the underlying reason. Resolving the issue means addressing the adjustment, using the remark as your guide.
Act quickly when a remark requests information
Some remark codes signal that the insurer needs additional records, an itemized bill, or proof of timely filing before they'll pay. These often carry deadlines. If the request is the provider's to fulfill, follow up with their billing office; if it's yours, send what's asked for promptly so the claim can be reprocessed.
Keep a written record of every follow-up
Because remark codes frequently kick off a back-and-forth between you, the provider, and the insurer, write down dates, names, and reference numbers for every call. That record is what makes a later appeal credible if the claim isn't resolved in your favor.
Your appeal rights for RARC MA04
If a remark code points to a reduced or denied payment that you believe is wrong, treat it the same way you'd treat the adjustment it accompanies: request a written explanation, supply any information the insurer asked for, and file a formal internal appeal if the issue isn't resolved. Your ACA appeal rights — internal review and then independent external review — apply here too.
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