November 3, 1999 HIPAA Announcement:

CMS Article Clarifies End Date of Transition Period for Revised CMS-1500 Form

12/06/05

Note: This article was revised on November 29, 2005, to clarify that the end date of the transition period for the revised CMS-1500 form is February 1, 2007.

Title: Stage 2 Requirements for Use and Editing of National Provider Identifier (NPI) Numbers Received in Electronic Data Interchange Transactions, via Direct Data Entry Screens or Paper Claim Forms Revised: 11/29/2005

http://www.cms.hhs.gov/medlearn/matters/mmarticles/2006/MM4023.pdf