Tools: Conversion / Crosswalk Activities General Equivalence Mappings (GEMs) Assist in Converting Data from ICD-9-CM to ICD-10 Forward and Backward Mappings –Information on GEMs and Their Use – http://www.cms.gov/ICD10 (Click on ICD-10-CM or ICD-10-PCS to Find Most Recent GEMs) http://www.cms.gov/ICD10 –Description of MS-DRG Conversion Project http://www.cms.gov/ICD10/17_ICD10_MS_DRG_ Conversion_Project.asp http://www.cms.gov/ICD10/17_ICD10_MS_DRG_ Conversion_Project.asp 30
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