05/2004 - Made minor revisions to text to transfer focus of NCD from actual pacemaker implantation procedure itself to reasonable and necessary medical indications that justify cardiac pacing. Therefore, only framework of NCD revised and not NCD itself. Effective and implementation dates 04/30/2004. (TN 12) (CR 3290)
06/2004 - Made technical revision to TN 12 by incorporating an exception for Investigational Device Exemption Clinical Trials. Discard TN 12 and replace with TN 16. Effective and implementation dates 04/30/2004. (TN 16) (CR 3369)
02/2014 - Rev. 161, Issued: 02-06-14, Effective: 08-13-13, Implementation: 07-07-14) (TN 161) (CR8525)