. F . R . § 3 . 156 ( b ) . For clarity , and although the April 2012 rating decision reflects that the agency of original jurisdiction ( AOJ ) adjudicated the issue of whether there was clear and unmistakable error in prior rating decisions denying service connection for PTSD and chronic anxiety state , the rating decision also addresses the merits of the claims of service connection for PTSD and chronic anxiety state . The December 2012 statement of the case addresses service connection for a psychiatric disorder , to include PTSD and anxiety state . Thereafter the Veteran filed a substantive appeal ( VA Form 9 ) . To the extent that statement of the case addresses clear and unmistakable error in the