Remark Code N598 on Your EOB — Meaning & What to Do

Remittance Advice Remark Code (RARC)

What remark code N598 means: The primary insurer's payment information is needed.
What to do about remark code N598: Provide the primary insurer's statement to the secondary payer.

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 N598.

Seeing remark code N598 on your EOB?
A denial code tells you what the payer reported, but it may not tell the whole story. Reviewing your EOB and bill together can help clarify what may need attention.

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Related codes

RARC N523The number of services billed is more than the allowed maximum. RARC N620This procedure needs a matching diagnosis to be covered. RARC N448This drug or service isn't on the plan's approved list (formulary). RARC N640This charge exceeds the covered amount for the service.

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Frequently asked questions about Remark code N598

What does remark code N598 mean on my EOB?

The primary insurer's payment information is needed.

What should I do about remark code N598?

Provide the primary insurer's statement to the secondary payer.

Seeing this code on your own EOB?
Upload the EOB, the bill, or both — MD Bill Check reads the codes on your documents, compares them side by side, and flags what's worth questioning. Free, no account needed.

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Last reviewed 2026-07-07 · MDBillCheck Editorial Team. Plain-English explanations are original wording; always verify the specific reason with your insurer.