Amends the Medical Assistance Article of the Illinois Public Aid Code. Provides that beginning on January 1, 2025, rates for psychiatric evaluations performed by community mental health centers and substance use disorder treatment providers and practitioners as set forth on the Department of Healthcare and Family Services' Practitioner Fee Schedule shall be increased to $237.57. Provides that beginning on January 1, 2025, rates for medication monitoring performed by community mental health centers and substance use disorder treatment providers and practitioners as set forth on the Department's Practitioner Fee Schedule shall be increased to $140.77 per quarter hour. Provides that no existing or future reimbursement rates or add-ons shall be reduced or changed to address these rate increases. Provides that no later than October 1, 2024, the Department shall submit any necessary application to the federal Centers for Medicare and Medicaid Services for a waiver or State Plan amendment to implement the requirements of the amendatory Act. Provides that beginning in State Fiscal Year 2025, and every State fiscal year thereafter, reimbursement rates for those community-based mental health and substance use disorder services shall be adjusted upward by an amount equal to the Consumer Price Index-U from the previous year, not to exceed 5% in any State fiscal year. Effective immediately.