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N573 Remark Code: Overpaid, Refund Requested Separately

N573 is an alert that you were overpaid and must refund the overpayment. The refund request itself will come separately from another payer or contractor, not through this remittance.

Code: N573 (RARC N573)
Status: Active In use since March 1, 2013.
Code set: Remittance Advice Remark Codes (RARC)
Group codes: OA (Other Adjustment): The alert flags an overpayment to be recovered by another entity. It does not create patient responsibility.
CO (Contractual Obligation): Some payers show a reversal or adjustment under CO. The overpaid amount belongs to the payer, not the patient.
Official description: Alert: You have been overpaid and must refund the overpayment. The refund will be requested separately by another payer/contractor.
X12 Remittance Advice Remark Codes, retrieved September 25, 2026
Last verified: September 24, 2026 against the official X12 list.

What N573 means

N573 is advance notice. The payer has determined that you received more than you should have for this claim, and a different payer or contractor, such as a recovery contractor, will request the refund separately. Nothing on this remittance takes the money back yet.

What to do

Verify the overpayment. Compare what you were paid with what you should have received and look for duplicate payments or a missed primary payment.
Flag the account so staff recognize the refund request when it arrives.
Respond on time when the request comes, either by refunding or by disputing with documentation.
Avoid double refunds by confirming whether an offset against future payments has already happened.

An ERA analysis that tracks reversals and offsets makes it easier to match N573 alerts to later recoveries. See also duplicate claim denials.

Codes that may appear with N573

CO-129 (Prior processing information appears incorrect.): Prior processing information appears incorrect, leading to the overpayment.
CO-B13 (Previously paid.): Payment for the service may already have been made.

N571 (Alert: Payment will be issued quarterly by another payer/contractor.): Another payer or contractor will issue a payment quarterly.
N432 (Alert: Adjustment based on a Recovery Audit.): Alert that an adjustment is based on a Recovery Audit.

N573 FAQ

Should I refund before I get the request?

Review the claim first. If you agree it was overpaid, many payers accept voluntary refunds, but coordinate with the entity that will send the request so the money is not recovered twice.

Can I dispute the overpayment?

Yes. When the refund request arrives, follow its instructions for disputing or appealing the finding.

What if no request ever comes?

Keep a record of the alert and follow up with the payer. An identified overpayment is still owed, and some programs have rules on how quickly one must be returned.

Important: read before using this information

This page is general educational information about a standard industry code set. It is not medical billing, coding, legal, reimbursement, or compliance advice, and it does not create a professional or advisory relationship with ClaimsRevenue.

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