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MA19 Remark Code: Medigap Crossover Failed, Bill Directly

MA19 is an alert that the claim was not forwarded to the patient's Medigap insurer because the information you submitted about that insurer was incorrect or invalid. You should verify the information and send the secondary claim directly to the Medigap insurer.

Quick facts

Code
MA19 (RARC MA19)
Status
Active In use since January 1, 1997; last modified April 1, 2007.
Code set
Remittance Advice Remark Codes (RARC)
Group codes
  • PR (Patient Responsibility): The patient's deductible and coinsurance remain, and the Medigap insurer may cover them once you bill it directly.
Official description
Alert: Information was not sent to the Medigap insurer due to incorrect/invalid information you submitted concerning that insurer. Please verify your information and submit your secondary claim directly to that insurer.
X12 Remittance Advice Remark Codes, retrieved September 25, 2026
Last verified
against the official X12 list.

What MA19 means

Medicare can forward claims to Medigap insurers so providers do not have to bill them separately. That only works when the claim identifies the Medigap insurer correctly. MA19 tells you the identifying information you gave was wrong or unusable, so no crossover happened.

The Medicare side of the claim is complete. What is left is the Medigap balance, which is now yours to bill.

What to do

  1. Check the Medigap details. Compare the patient’s card with the insurer name, identifier, and policy number on your claim.
  2. Bill the Medigap plan directly. Send a claim with the Medicare adjudication information attached or included.
  3. Correct your records. Update the patient’s secondary coverage so future claims cross over.
  4. Hold the patient balance until the Medigap insurer responds.

Crossover and secondary billing issues are covered in eligibility and COB denials.

Codes that may appear with MA19

  • PR-1 (Deductible Amount): Deductible that did not cross over and must be billed to the Medigap plan.
  • PR-2 (Coinsurance Amount): Coinsurance that needs a direct secondary claim.
  • MA18 (Alert: The claim information is also being forwarded to the patient's supplemental insurer.): The claim did cross over to the supplemental insurer.
  • MA08 (Alert: Claim information was not forwarded because the supplemental coverage is not with a Medigap plan, or you do not participate in Medicare.): No crossover because the coverage is not Medigap or you do not participate.
  • MA68 (Alert: We did not crossover this claim because the secondary insurance information on the claim was incomplete.): No crossover because the secondary insurance information was incomplete.

MA19 FAQ

What information is usually wrong?

Often the Medigap insurer's identifier, the policy number, or the insured's details in the other-insurance fields, such as boxes 9 through 9d on the CMS-1500.

Do I need to resubmit to Medicare?

No. Medicare's payment stands. Send the secondary claim directly to the Medigap insurer with the Medicare payment information.

Will future claims cross over?

Only if you correct the Medigap information in your system. Update it now so the next claim is forwarded automatically.