Convert ICD-10 Code C72.31 to ICD-9

Source ICD-10 Code		Target ICD-9 Code
C72.31 Malignant neoplasm of right optic nerve		192.0 Mal neo cranial nerves
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 C72.31 - malignant neoplasm of right optic nerve based on the most recent General Equivalence Mappings (GEMS) information.