Convert ICD-10 Code H49.12 to ICD-9

Source ICD-10 Code		Target ICD-9 Code
H49.12 Fourth [trochlear] nerve palsy, left eye		378.53 Fourth nerve palsy
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 H49.12 - fourth [trochlear] nerve palsy, left eye based on the most recent General Equivalence Mappings (GEMS) information.