Remark Code N523 on Your EOB — Meaning & What to Do
Remittance Advice Remark Code (RARC)
What remark code N523 means: The number of services billed is more than the allowed maximum.
What to do about remark code N523: Ask the provider to confirm the units (possible over-billing).
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 N523.
Related codes
RARC N448This drug or service isn't on the plan's approved list (formulary).
RARC N598The primary insurer's payment information is needed.
RARC N435This exceeds the outpatient limit for a benefit period.
RARC N620This procedure needs a matching diagnosis to be covered.
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 N523
What does remark code N523 mean on my EOB?
The number of services billed is more than the allowed maximum.
What should I do about remark code N523?
Ask the provider to confirm the units (possible over-billing).
Found this code on your bill or EOB?
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