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M32 Remark Code: Conditional Payment Pending Primary

M32 is an alert that this is a conditional payment, made while the patient's primary payer decides on the service. If another payer later pays, the payment may have to be refunded, and you must notify the payer immediately.

Quick facts

Code
M32 (RARC M32)
Status
Active In use since January 1, 1997; last modified April 1, 2007.
Code set
Remittance Advice Remark Codes (RARC)
Group codes
  • OA (Other Adjustment): Adjustments relate to the other-payer situation and do not assign liability to the patient or provider on their own.
  • CO (Contractual Obligation): Any contractual adjustment follows normal rules. The payment remains subject to refund if the primary pays.
Official description
Alert: This is a conditional payment made pending a decision on this service by the patient's primary payer. This payment may be subject to refund upon your receipt of any additional payment for this service from another payer. You must contact this office immediately upon receipt of an additional payment for this service.
X12 Remittance Advice Remark Codes, retrieved September 25, 2026
Last verified
against the official X12 list.

What M32 means

Under Medicare Secondary Payer rules, another payer is sometimes primary: workers’ compensation, no-fault, liability insurance, or certain group health plans. If that payer has not paid, Medicare may pay “conditionally” so the provider is not left waiting. M32 marks one of those payments. It remains subject to repayment once the responsible payer pays.

This is a Medicare alert. The dollar outcome is carried by the other codes on the line.

What to do

  1. Post the payment as conditional and flag the account.
  2. Keep pursuing the primary payer and document your follow-up.
  3. If the primary payer pays, contact the Medicare contractor immediately and refund as instructed.
  4. Keep accident and other-insurance details current, including boxes 10a-c and 11d on the CMS-1500.

Tracking conditional payments separately from final ones prevents surprise recoupments later. See eligibility and COB denials for coordination of benefits basics.

Codes that may appear with M32

  • OA-22 (This care may be covered by another payer per coordination of benefits.): The care may be covered by another payer per coordination of benefits.
  • OA-23 (The impact of prior payer(s) adjudication including payments and/or adjustments. (Use only with Group Code OA)): The impact of prior payer adjudication is reflected in the amounts.
  • N726 (A conditional payment is not allowed.): The opposite: a conditional payment is not allowed.
  • MA04 (Secondary payment cannot be considered without the identity of or payment information from the primary payer.): Secondary payment cannot be considered without primary payer information.
  • N116 (Alert: This payment is being made conditionally because the service was provided in the home, and it is possible that the patient is under a home…): A conditional payment made for a home service that may fall under a home health episode.

M32 FAQ

When does Medicare make conditional payments?

Typically when another payer, such as liability, no-fault, or workers' compensation coverage, is responsible but has not paid promptly. Medicare pays conditionally and later seeks repayment.

What should I do if the primary payer pays later?

Notify the Medicare contractor right away and refund the conditional payment as directed. Keeping both payments creates an overpayment.

Should I still pursue the primary payer?

Yes. The conditional payment does not change who is primary.