however, was postponed by CMS until March 31, 2012, with the federal agency citing numerous factors, including slow software upgrades. The implementation of ICD-10-CM has been subject to previous delays. In January 2009, the date was pushed back to October 1, 2013, rather than an earlier proposal of October 1, 2011.

Two common complaints in the United States about the ICD-10-CM are 1) the long list of potentially relevant codes for a given condition (such as rheumatoid arthritis) which can