MedicaidBilling CodesMedium impact
MSA 16-20
Michigan Medicaid - MDHHS·MI · Gastroenterology, Internal Medicine, Family Medicine·Provider Bulletin
Effective date
Jul 1, 2016
We identified it
Jun 20, 2026
Summary
Michigan Medicaid has activated coverage for HCPCS code 83993 (fecal calprotectin assay) effective July 1, 2016, and clarified that psychologists, social workers, and professional counselors must bill under their own NPI numbers rather than supervising physicians. The Medicaid Provider Manual has been updated with various technical changes and new benefit plans.
Action Required
By July 1, 2016: Laboratory and Outpatient Hospital billing teams must update systems to allow billing of HCPCS code 83993 for fecal calprotectin assays. Ensure psychologists, social workers, and professional counselors use their own NPI numbers on all Medicaid claims rather than supervising physician NPIs. Update billing software and encounter forms accordingly.