Idaho Medicaid budget rises as caseload, provider rates and FMAP shifts drive supplemental requests

Alex Williamson, budget and policy analyst with Legislative Services, told the Joint Finance‑Appropriations Committee on Feb. 26 that Idaho’s Division of Medicaid expended about $4.27 billion in fiscal 2024 and that most spending is for benefit payments. “Of the $4,270,000,000 expended, trusting benefit payments made up over 98% of that,” Williamson said.

Williamson outlined five supplemental requests in the governor’s recommendation and a package of 2026 enhancements. She said the department’s budget shows a “lot of moving parts,” citing provider rate increases adopted in 2022, changes to upper payment limit calculations, the lingering effects of the COVID public‑health emergency and population growth.

The analyst also described the population mix driving costs: basic adults and children make up about 51% of participants but account for roughly 19% of costs, while coordinated and enhanced plans—covering elderly and disabled…