Convert ICD-10 Code M33.20 to ICD-9

Source ICD-10 Code		Target ICD-9 Code
M33.20 Polymyositis, organ involvement unspecified		710.4 Polymyositis
Approximate Flag - The approximate mapping means there is not an exact match between the ICD-10 and ICD-9 codes and the mapped code is not a precise representation of the original code.

ICD-10 to ICD-9 crosswalk for code M33.20 - polymyositis, organ involvement unspecified based on the most recent General Equivalence Mappings (GEMS) information.