CMS and the Internal Revenue Service have filed a joint notice seeking comments on certain issues under the Paul Wellstone and Pete Domenici Mental Health Parity and Addiction Equity Act of 2008 in advance of future rulemaking. The notice requests information on such issues as: financial requirements and treatment limitations associated with certain health benefits, criteria for medical necessity and coverage determinations with respect to mental health or substance use disorder benefits, and out-of-network coverage issues, among others. In addition, the notice seeks comments on various issues related to direct and indirect costs to group health plans, health insurance issuers, businesses, and other stakeholders associated with implementation of the law. Comments are due by May 28, 2009.