This bill amends Medicaid rules to allow federal funding for certain crisis mental health and substance abuse facilities that were previously excluded from coverage. Currently, Medicaid has a blanket prohibition on funding institutions for mental diseases, but this legislation carves out exceptions for four types of facilities: certified community behavioral health clinics, community mental health centers, crisis receiving and stabilization facilities, and mental health and substance use urgent care facilities. Crisis stabilization facilities must provide 23 hours of observation followed by 48 hours of crisis services including withdrawal management, operate around the clock, accept walk-ins and referrals from law enforcement, and maintain average stays under 150 hours. The Department of Health and Human Services must issue implementation guidance to states within 180 days and submit a report to Congress within one year detailing utilization data and whether these facilities reduce emergency room visits, psychiatric hospitalizations, and incarceration rates. The bill aims to provide Medicaid coverage for crisis services that can divert people experiencing mental health or substance use emergencies away from emergency rooms and the criminal justice system.