Amends the Medical Assistance Article of the Illinois Public Aid Code. Provides that for the purpose of removing barriers to the timely treatment of serious mental illnesses, prior authorization mandates and utilization management controls shall not be imposed under the fee-for-service and managed care medical assistance programs on any FDA-approved prescription drug that is recognized by a generally accepted standard medical reference as effective in the treatment of conditions specified in the most recent Diagnostic and Statistical Manual of Mental Disorders published by the American Psychiatric Association. Provides that the following shall be permitted for prescription drugs covered under the amendatory Act: (i) clinically appropriate drug utilization review (DUR) edits, including, but not limited to, drug-to-drug, drug-age, and drug-dose; (ii) generic drug substitution if a generic drug is available for the prescribed medication in the same dosage and formulation; and (iii) any utilization management control that is necessary for the Department of Healthcare and Family Services to comply with any current consent decrees or federal waivers. Defines "serious mental illness".