On September 28, 2011, the Centers for Medicare & Medicaid Services (CMS) accepted a formal request for a National Coverage Determination (NCD) for TAVR and initiated a National Coverage Analysis (NCA). See National Coverage Analysis (NCA) Tracking Sheet for TRANSCATHETER AORTIC Valve Replacement (TAVR) (CAG-00430N). CMS received the joint request for a formal NCD from the American College of Cardiology (ACC) and the Society of Thoracic Surgeons (STS). The public comment period is open from September 28 through October 28, 2011 and the due date for the Proposed Decision Memorandum is March 28, 2012.  The expected NCA Completion Date is June 26, 2012.  The NCA Tracking Sheet is accessible by clicking here.