The Centers for Medicare & Medicaid Services (CMS) announced in the CMS Medicare Learning Network on June 27, 2013 that their tentative timeline for implementing the 02/12 1500 claim form is as follows:
January 6, 2014: Medicare begins receiving and processing paper claims submitted on the revised CMS 1500 claim form (version 02/12).
January 6 through March 31, 2014: Dual use period during which Medicare continues to receive and process paper claims submitted on the old CMS 1500 claim form (version 08/05).
April 1, 2014: Medicare receives and processes paper claims submitted only on the revised CMS 1500 claim form (version 02/12).