Skip Navigation Bar

Unified Medical Language System® (UMLS®)

RxNorm Technical Documentation

RxNorm Documentation is updated when significant changes are made to the RxNorm files. Follow the links below to read a specific version of the documentation.

2014 Documentation

04/07/2014 Version 2014-2
Table of Contents
Documentation

01/06/2014 Version 2014-1
Table of Contents
Documentation

2013 Documentation

08/05/2013 Version 2013-3
Table of Contents
Documentation

04/01/2013 Version 2013-2
Table of Contents
Documentation

01/07/2013 Version 2013-1
Table of Contents
Documentation

2012 Documentation

06/04/2012 Version 2012-3
Table of Contents
Documentation

04/02/2012 Version 2012-2
Table of Contents
Documentation

01/03/2012 Version 2012-1
Table of Contents
Documentation

2011 Documentation

10/03/2011 Version 2011-5
Table of Contents
Documentation

07/05/2011 Version 2011-4
Table of Contents
Documentation

05/02/2011 Version 2011-3
Table of Contents
Documentation

02/07/2011 Version 2011-2
Table of Contents
Documentation

01/03/2011 Version 2011-1
Table of Contents
Documentation

2010 Documentation

09/07/2010 Version 2010-4
Table of Contents
Documentation

06/07/2010 Version 2010-3
Table of Contents
Documentation

05/03/2010 Version 2010-2
Table of Contents
Documentation

01/04/2010 Version 2010-1
Table of Contents
Documentation