The state hospital is an institution for mental diseases serving specialized populations of individuals with severe mental illness, including individuals with a substance use disorder. The state hospital is one component of the North Dakota mental health delivery system and serves as a resource to community-based treatment programs. The state hospital shall, pursuant to rules adopted by the department of health and human services, receive and care for all eligible individuals with severe mental illness, including individuals with a substance use disorder, residing within this state in accordance with this title, and may furnish to those individuals all needed food, shelter, treatment, and support.