M19Remark Code (RARC)Active
Effective 01/01/1997 · Updated 02/28/2003

M19 Remark Code - Missing Oxygen Certification

The M19 remark code indicates that there is a missing oxygen certification or re-certification for the billed service. This remark supplements an adjustment that has already been detailed by a Claim Adjustment Reason Code, providing additional clarity on why the claim was denied or adjusted.

How It Relates to the Denial

The M19 remark code typically accompanies denial or adjustment reason codes related to the lack of required documentation for oxygen services. This combination signals that the payer requires proof of certification or re-certification to process the claim appropriately.

Common Scenarios

1A claim for home oxygen therapy was submitted, but the remittance shows an adjustment due to missing documentation.
→ The M19 remark code suggests that the payer did not receive the necessary certification or re-certification for the oxygen therapy, indicating that the claim cannot be processed without this documentation.
2A provider billed for a patient receiving oxygen services, and the remittance response includes a denial for lack of supporting documentation.
→ The appearance of the M19 remark code means the payer is specifically noting the absence of the required oxygen certification or re-certification, which must be provided to proceed with the claim.
3A healthcare facility submitted a claim for oxygen equipment rental, but the payment was adjusted due to missing paperwork.
→ The M19 remark code indicates that the payer is requesting the oxygen certification or re-certification documentation that was not included with the claim.

What to Do

  1. Obtain the missing oxygen certification or re-certification documentation.
  2. Submit the required certification paperwork to the payer as per their guidelines.
  3. Ensure that future claims include the necessary documentation to avoid similar adjustments.

What to Check

  • Review the claim submission for the included oxygen certification or re-certification.
  • Check the remittance advice for the associated Claim Adjustment Reason Code that triggered the M19 remark.
  • Verify the patient's eligibility and coverage for oxygen services based on the payer's policy.