MedicaidBilling CodesMedium impact
MSA 18-32
Michigan Medicaid - MDHHS·MI·Provider Bulletin
Effective date
Oct 1, 2018
We identified it
Jun 20, 2026
Summary
Michigan Medicaid updated the Provider Manual with clarifications to customary charge definitions for billing free/reduced services, added new HCPCS codes requiring coverage or prior authorization, and discontinued several codes. The policy also expands psychiatric services to include physician assistants under supervision.
Action Required
By October 1, 2018: Billing team must obtain prior authorization for Q9994 code for medical suppliers. Stop billing discontinued codes C9469 (as of June 30, 2018) and 0008M, 83992 (as of December 31, 2017). Add coverage for new Q codes (Q5105, Q5106, Q9993, Q9995) effective July 1, 2018. Review customary charge billing practices to ensure compliance with revised definition that excludes negotiated rates but allows billing Medicaid at customary charge for services offered free/reduced to general public.