The 2015 General Equivalence Mappings (GEMs) and Reimbursement Mappings are now available on the 2015 ICD-10-CM and GEMs web page and 2015 ICD-10-PCS and GEMs web page. These mappings can be used to convert policies from ICD-9-CM to ICD-10 codes. The GEMs provide both forward (ICD-9-CM to ICD-10) and backward (ICD-10 to ICD-9-CM) mappings. For detailed information on these mappings, see the accompanying Guides that are posted with the files.
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More information: http://www.cms.gov/Medicare/Coding/ICD10/2015-ICD-10-CM-and-GEMs.html