405 ILCS 20/1
As used in this Act:
"Direct recipient services" means only those services required to carry out a completed individualized treatment plan that is signed by a service recipient or legal guardian. Crisis assessment and stabilization services are excluded, although these services may be anticipated in a treatment plan.
"Governmental unit" means any county, city, village, incorporated town, or township.
"Person with a developmental disability" means any person or persons so diagnosed and as defined in the Mental Health and Developmental Disabilities Code. Community mental health boards operating under this Act may in their jurisdiction, by a majority vote, add to the definition of "person with a developmental disability".
"Mental illness" has the meaning ascribed to that term in the Mental Health and Developmental Disabilities Code. Community mental health boards operating under this Act may in their jurisdiction, by a majority vote, add to the definition of "mental illness".
"Substance use disorder" encompasses substance abuse, dependence, and addiction, not inconsistent with federal or State definitions.
405 ILCS 20/1