M100Remark Code (RARC)Active
Effective 01/01/1997

M100 Remark Code - Oral Anti-Emetic Drug Coverage

The M100 remark code indicates that the payer will not cover the cost of an oral anti-emetic drug unless it is administered immediately before, at, or within 48 hours of a covered chemotherapy drug. This remark supplements an adjustment already detailed by a Claim Adjustment Reason Code, providing clarity on the conditions for coverage of the anti-emetic drug.

How It Relates to the Denial

The M100 remark typically accompanies adjustment reason codes related to denied claims for oral anti-emetic drugs. It signals that the claim is being denied due to the timing of administration relative to chemotherapy treatment.

Common Scenarios

1A claim was submitted for an oral anti-emetic drug prescribed for nausea, but the administration date does not coincide with chemotherapy treatment.
→ The M100 remark indicates that the payer expects the oral anti-emetic drug to have been administered in a timely manner concerning chemotherapy, which was not the case here.
2A patient received an oral anti-emetic drug a week after their chemotherapy session, and the claim was denied.
→ In this situation, the M100 remark clarifies that the payer's policy requires the anti-emetic to be administered within 48 hours of chemotherapy for coverage, hence the denial.
3A provider billed for an oral anti-emetic drug given to a patient who was not undergoing chemotherapy at the time of administration.
→ The M100 remark points out that the payer does not cover this drug if it is not linked to the chemotherapy treatment, reflecting the specific coverage criteria.

What to Do

  1. Review the administration dates of the oral anti-emetic drug in relation to chemotherapy treatment dates.
  2. Ensure that future claims for oral anti-emetic drugs include documentation of administration timing per payer guidelines.
  3. If appropriate, resubmit the claim with corrected dates or additional information supporting the administration timing.

What to Check

  • The patient's treatment records to confirm the administration date of the anti-emetic drug.
  • The chemotherapy administration record to determine the timing of the chemotherapy drug.
  • The payer's policy documents regarding coverage of anti-emetic drugs and related requirements.