In October, 2016, the Departments of Labor, Health and Human Services, and the Treasury (collectively, the Departments) released this parity compliance assistance materials index on Mental Health and Substance Use Disorder Parity. The document serves as a compilation of subregulatory guidance and compliance assistance materials that aim to assist plans, issuers and TPAs as they work to ensure compliance with the Paul Wellstone and Pete Domenici Mental Health Parity and Addiction Equity Act of 2008 (MHPAEA). The document was created so that plan sponsors, issuers and TPAs will be better able to utilize them, along with the regulation, to comply . . .