Remark Code N522 on Your EOB — Meaning & What to Do
Remittance Advice Remark Code (RARC)
What remark code N522 means: This is a duplicate of a service already submitted.
What to do about remark code N522: Confirm the service wasn't billed twice.
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 N522.
Seeing remark code N522 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.
Related codes
RARC M15Separately billed services are included in the main service's payment.
RARC N479The Explanation of Benefits from the primary insurer is missing.
RARC M76The diagnosis information was missing or incomplete.
RARC N1You may be able to appeal this decision — see your plan's appeal rights.
Keep reviewing your bill
- Medical Bill vs EOB: What Is the Difference?
- How to Dispute a Medical Bill — Find Billing Errors Before You Pay
- What Is an Itemized Medical Bill? How to Request One
Frequently asked questions about Remark code N522
What does remark code N522 mean on my EOB?
This is a duplicate of a service already submitted.
What should I do about remark code N522?
Confirm the service wasn't billed twice.
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.