ICD-9 to ICD-10 converter
Convert diagnosis and procedure codes between ICD-9 and ICD-10, in either direction, using the CMS General Equivalence Mappings (GEMs).
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Reading the results
Exact match means the codes mean the same thing. Close match means ICD-10 is more specific than ICD-9, so check the medical record before picking a code. Use together means one ICD-9 code needs two or more ICD-10 codes on the claim; report every part of the same set.
GEMs are a translation aid, not a coding rule. Always code from the documentation, and use the Diagnoses option for conditions and Procedures for inpatient ICD-10-PCS codes. Dots are optional, so E11.9 and E119 both work.