(405 ILCS 125/3)
    Sec. 3. Definitions. As used in this Act:
    "Individual at high risk of unnecessary institutionalization" means a person who has a serious mental illness who is homeless (or will be homeless upon hospital discharge or correctional facility release) and who has had:
        (1) three or more psychiatric inpatient hospital admissions within the most recent
    
12-month period;
        (2) three or more stays in a State or county correctional facility in the State of
    
Illinois within the most recent 12-month period; or
        (3) a disability determination due to a serious mental illness and has been incarcerated
    
in a State or county correctional facility in Illinois for the most recent 12 consecutive months.
    "Individual at high risk of overdose" means a person with a substance use disorder who is homeless (or will be homeless upon hospital discharge or correctional facility release) who has had:
        (A) three or more hospital inpatient or inpatient detoxification admissions for a
    
substance use disorder within the most recent 12-month period;
        (B) three or more stays in a State or county correctional facility in the State of
    
Illinois within the most recent 12-month period; or
        (C) one or more drug overdoses in the last 12 months.
    "Engagement services" means home-based or community-based visits that assist the individual with maintaining his or her housing, and providing other wrap-around support, including linkage to mental health or substance use recovery support services. Such engagement services shall align with Medicaid-covered tenancy support services, and Medicaid community-based mental health and substance use treatment services, including case management, to ensure alignment with any existing or future Illinois Medicaid benefits, waivers or State plan amendments that include these services, and to maximize any potential federal Medicaid matching dollars that may be available to support engagement services.
    "Homeless" means the definition used by the U.S. Department of Health and Human Services, Health Resources and Services Administration in Section 330(h)(5)(A) of the Public Health Services Act (42 U.S.C. 254(b)). Under Section 330(h)(5)(A), a homeless individual is an individual who lacks housing (without regard to whether the individual is a member of a family), including an individual whose primary residence during the night is a supervised public or private facility that provides temporary living accommodations, and an individual who is a resident in transitional housing. This includes individuals who are doubled up with other households.
    "Serious mental illness" means meeting both the diagnostic and functioning criteria consistent with the definition of Serious Mental Illness in the most current edition of the Illinois Department of Human Services/Division of Mental Health Community Mental Health Provider Manual.
    "Substance use disorder" as defined in Section 1-10 of the Substance Use Disorder Act.
(Source: P.A. 102-66, eff. 7-9-21.)