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National Bureau of Economic Research – Crosswalk for ICD-9-CM to/from ICD-10-CM for General Equivalence Mappings
Description:Centers for Medicare & Medicaid Services CMS has developed the ICD-9-CM to and from ICD-10-CM and ICD-10-PCS General Equivalence Mappings to make converting from ICD-9-CM to or from ICD-10-CM and ICD-10-PCS easier. TheirICD-10 page has information and data about the transition.
Description of Cohort: Just for reference between ICD-9 and 10 diagnosis codes