On January 17, 2017, the Centers for Medicare & Medicaid Services (CMS) published this guide to applying mental health and substance abuse disorder parity requirements to Medicaid and Children's Health Insurance Programs (CHIP). The purpose of this Parity Compliance Toolkit (Toolkit) is to provide detailed information and guidance to help states assess compliance with the final Medicaid/CHIP parity rule. This Toolkit discusses and provides examples, tips, and key considerations on the following topics: General parity requirements and approach to determining parity Defining mental health and substance use disorder benefits Defining classification and . . .