Convert ICD-10 Code I09.9 to ICD-9

Source ICD-10 Code		Target ICD-9 Code
I09.9 Rheumatic heart disease, unspecified		398.90 Rheumatic heart dis NOS

ICD-10 to ICD-9 crosswalk for code I09.9 - rheumatic heart disease, unspecified based on the most recent General Equivalence Mappings (GEMS) information.