MedicaidAdministrativeMedium impact
Quantity Prescribed Requirement
Missouri Medicaid (MO HealthNet)·MO · Pain Management, Family Medicine, Internal Medicine +2 more·Provider Notice
Effective date
Sep 21, 2020
We identified it
Jun 20, 2026
Summary
Missouri Medicaid now requires the NCPDP Quantity Prescribed field (460-ET) to be populated for all Schedule II drug claims. Claims missing this field will be denied with reject code ET - M/I Quantity Prescribed.
Action Required
Immediately: Billing team must ensure pharmacy partners populate the NCPDP Quantity Prescribed (460-ET) field for all Schedule II drug claims submitted to Missouri Medicaid. Verify with pharmacy software vendors that this field is captured to prevent claim denials with reject code ET - M/I Quantity Prescribed.