CMS is inviting comments on a coverage document entitled “Draft Guidance for the Public, Industry, and CMS Staff Coverage with Evidence Development in the context of coverage decisions."  CMS’s CED policy provides the framework for conditional Medicare coverage of an item or service while additional clinical data is developed to support a “reasonable and necessary” determination. The November 29, 2012 draft guidance document updates CMS’s July 12, 2006 CED guidance document, most notably to discontinue the use of the existing category of “Coverage with Appropriateness Determinations.” Comments will be accepted until January 28, 2013.