Convert ICD-10 Code G21.8 to ICD-9

Source ICD-10 Code		Target ICD-9 Code
G21.8 Other secondary parkinsonism		332.1 Secondary parkinsonism
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 G21.8 - other secondary parkinsonism based on the most recent General Equivalence Mappings (GEMS) information.