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MA15 Remark Code: Claim Split for Faster Handling

MA15 is an informational alert. The payer separated your claim into more than one claim to speed up handling. The services not shown on this notice will be reported on a separate remittance.

Code: MA15 (RARC MA15)
Status: Active In use since January 1, 1997; last modified April 1, 2007.
Code set: Remittance Advice Remark Codes (RARC)
Group codes: CO (Contractual Obligation): Adjustments shown follow their own reason codes. MA15 only explains why some services are missing from this notice.
OA (Other Adjustment): Some payers report split-claim information under other adjustments. The missing lines still appear on another notice.
Official description: Alert: Your claim has been separated to expedite handling. You will receive a separate notice for the other services reported.
X12 Remittance Advice Remark Codes, retrieved September 25, 2026
Last verified: September 24, 2026 against the official X12 list.

What MA15 means

When a claim contains services that need to go through different processing paths, the payer may break it into separate claims so the simpler lines are not held up by the ones needing review. MA15 tells you this happened. The remittance in front of you covers only part of what you billed.

Your posting system may show the unreported lines as unpaid, but they have not been denied.

What to do

Leave the missing lines open. Mark them as pending on a split claim rather than denied.
Watch for the second remittance. It may carry a new claim number, so match it by patient and date of service.
Do not rebill. A resubmission while the other part is processing can trigger a duplicate denial; see how to avoid duplicate claim denials.
Follow up if it stalls. If no second notice arrives within your normal follow-up window, contact the payer with the original claim number.

Codes that may appear with MA15

CO-45 (Charge exceeds fee schedule/maximum allowable or contracted/legislated fee arrangement.): A standard fee schedule adjustment on the services that were processed in this part of the split.

OA-18 (Exact duplicate claim/service (Use only with Group Code OA except where state workers' compensation regulations requires CO)): A duplicate denial that can occur if you resubmit services from a split claim that is still processing.
N202 (Alert: Additional information/explanation will be sent separately.): An alert that additional information will be sent separately.
MA67 (Alert: Correction to a prior claim.): An alert about a correction to a prior claim.

MA15 FAQ

Where are the other services from my claim?

They were moved to a separate claim and will appear on a different remittance, often with a different claim control number.

Should I resubmit the missing lines?

No. Resubmitting them risks duplicate denials. Wait for the separate notice, and follow up with the payer only if it does not arrive.

Why would a payer split a claim?

Payers split claims when some lines can be processed immediately while others need review, or when services belong to different processing areas.

Important: read before using this information

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