MI| Michigan DIFS Bulletin 2026-09-INS, supersedes Bulletin 2025-05-INS and announces the annual CPI-based adjustment to the auto insurance medical provider fee schedule under MCL 500.3157. For dates of service from July 2, 2026, through July 1, 2027, any amount payable that was in effect on January 1, 2019 under MCL 500.3157(7) or (8) must be increased by 16.38%, reflecting the prior cumulative 13.12% adjustment plus a new 2.88% adjustment tied to the medical component of the Consumer Price Index. The bulletin also recaps recent annual and cumulative adjustment percentages for the periods July 2, 2021July 1, 2026 and provides contact information for the Departments Office of Appeals and Market Regulation for questions.