Remark Code N4 on Your EOB — Meaning & What to Do
Remittance Advice Remark Code (RARC)
What remark code N4 means: Missing or incomplete information about other insurance is holding up the claim.
What to do about remark code N4: Give your insurer your other/secondary coverage details.
Remark codes add detail to a claim decision. They appear alongside the main adjustment codes on your Explanation of Benefits or remittance notice, giving the specific reason behind remark code N4.
Related codes
RARC N1You may be able to appeal this decision — see your plan's appeal rights.
RARC N19A dependent procedure code was billed without its required primary code.
RARC N479The Explanation of Benefits from the primary insurer is missing.
RARC N56The procedure code billed was not correct for the service described.
Keep reviewing your bill
- Medical Bill vs EOB: What Is the Difference?
- How to Dispute a Medical Bill — Find Billing Errors Before You Pay
Frequently asked questions about Remark code N4
What does remark code N4 mean on my EOB?
Missing or incomplete information about other insurance is holding up the claim.
What should I do about remark code N4?
Give your insurer your other/secondary coverage details.
Found this code on your bill or EOB?
Upload the document — MD Bill Check decodes every code, checks the math line by line, and explains what's worth questioning.