Amends the Medical Assistance Article of the Illinois Public Aid Code. Provides that the Department of Healthcare and Family Services and any managed care plans under contract with the Department for the medical assistance program shall provide for coverage of mental health and substance use disorder treatment or services delivered as behavioral telehealth services; and that the Department and any managed care plans under contract with the Department for the medical assistance program may also provide reimbursement to a behavioral health facility that serves as the originating site at the time a behavioral telehealth service is rendered. Sets forth provisions concerning coverage of mental health and substance use disorder telehealth services. Provides that the Department may adopt rules to implement the provisions.