• Dominic Hodgkin, Constance M Horgan, Maureen T Stewart, Amity E Quinn, Timothy B Creedon, Sharon Reif, and Deborah W Garnick.
• Except for Dr. Quinn, the authors are with the Institute for Behavioral Health, Heller School for Social Policy and Management, Brandeis University, Waltham, Massachusetts. Dr. Quinn is with the Department of Community Health Sciences, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada.
• Psychiatr Serv. 2018 Apr 1; 69 (4): 396-402.

ObjectiveThe 2008 Mental Health Parity and Addiction Equity Act (MHPAEA) sought to improve access to behavioral health care by regulating health plans' coverage and management of services. Health plans have some discretion in how to achieve compliance with MHPAEA, leaving questions about its likely effects on health plan policies. In this study, the authors' objective was to determine how private health plans' coverage and management of behavioral health treatment changed after the federal parity law's full implementation.MethodsA nationally representative survey of commercial health plans was conducted in 60 market areas across the continental United States, achieving response rates of 89% in 2010 (weighted N=8,431) and 80% in 2014 (weighted N=6,974). Senior executives at responding plans were interviewed regarding behavioral health services in each year and (in 2014) regarding changes. Student's t tests were used to examine changes in services covered, cost-sharing, and prior authorization requirements for both behavioral health and general medical care.ResultsIn 2014, 68% of insurance products reported having expanded behavioral health coverage since 2010. Exclusion of eating disorder coverage was eliminated between 2010 (23%) and 2014 (0%). However, more products reported excluding autism treatment in 2014 (24%) than 2010 (8%). Most plans reported no change to prior-authorization requirements between 2010 and 2014.ConclusionsImplementation of federal parity legislation appears to have been accompanied by continuing improvement in behavioral health coverage. The authors did not find evidence of widespread noncompliance or of unintended effects, such as dropping coverage of behavioral health care altogether.

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