MedicaidBilling CodesMedium impact
MSA 21-22
Michigan Medicaid - MDHHS·MI · Pathology, Genetics·Provider Bulletin
Effective date
Aug 1, 2021
We identified it
Jun 20, 2026
Summary
Michigan Medicaid now requires laboratories to bill multi-gene panel tests as a single procedure code when genes are tested simultaneously in parallel, rather than billing individual gene codes separately. This standardizes billing with CMS requirements for next generation sequencing multi-gene panels.
Action Required
By August 1, 2021: Laboratory billing teams must update billing procedures to submit one procedure code for multi-gene panels when genes are tested simultaneously in parallel for the same indication. Use specific panel codes when available, or unlisted molecular pathology codes when no specific panel code exists. Include panel test names in box 21 of form MSA-2081 and in CHAMPS authorization forms when using unlisted codes. Continue billing individual gene codes only when genes are tested serially based on prior results.