" The transition to ICD-10-CM might be a little less painful,thanks to new tools from CMS that help you crosswalk from the current diagnosis code set (ICD-9-CM) to the new one. CMSs general equivalence mappings offer a backward and forward tool to help you convert diagnosis codes between the two systems. Keep in mind: In some cases,you wont find a direct one-to-one match between the code sets. Instead,one ICD-9 code may lead you to several options on the ICD-10 code set. You can review the general equivalency mapping at www.cms.hhs.gov/ICD10/02m_2009_ICD_10_CM.asp.