HB 475 amends Section 32.024 of the Human Resources Code to mandate Medicaid coverage and reimbursement for multisystemic therapy (MST) services. The bill directs the Health and Human Services Commission (HHSC) to provide medical assistance reimbursement to healthcare providers who deliver MST services as classified by the Healthcare Common Procedure Coding System (HCPCS). Additionally, it requires the executive commissioner to establish a distinct provider type for MST providers to facilitate their enrollment and reimbursement under the Medicaid program. The act is set to take effect on September 1, 2025, unless delayed by the need for federal waivers or authorizations.