On September 9, 2024, the U.S. Department of Labor (DOL), Health and Human Services (HHS), and Treasury (collectively, the Departments) issued a Final Rule clarifying and adding additional requirements on health plans to provide equitable access to health insurance coverage for treatment of mental health and substance use disorders (SUDs), as required by the Mental Health Parity and Addiction Equity Act of 2008 (MHPAEA) and implementing regulations at 45 C.F.R. Part 146 and 147 (the 2024 Final Rule).

MHPAEA is a federal law that prevents group health plans and health insurance issuers (collectively, Health Plans) that provide mental health or substance use disorder benefits from imposing less favorable benefit limitations on those benefits than it does for a medical condition or surgical procedure. This means that Health Plans cannot impose additional financial requirements or apply non-quantitative treatment limitations (NQTLs) to these benefits more stringently than those applied to medical/surgical benefits.