Establishes the "End Hospital Institutionalization Act"

SB 1151, the "End Hospital Institutionalization Act," prevents hospitals from keeping medically stable patients unnecessarily in emergency rooms or inpatient settings ("boarding") when community care options are unavailable. It requires juvenile courts to act immediately for children under their jurisdiction or not under court care, and directs the Department of Mental Health to provide case management and treatment (including residential care) for adults with developmental disabilities, serious mental illness, or substance use disorders. Hospitals must notify the relevant authorities when boarding occurs, and the state will reimburse hospitals for boarding costs after notification. This law aims to move patients from hospitals to appropriate community-based care settings without delay.