Convert ICD-10 Code M18.12 to ICD-9

Source ICD-10 Code		Target ICD-9 Code
M18.12 Unil primary osteoarth of first carpometacarp joint, l hand		715.14 Loc prim osteoarth-hand
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 M18.12 - unilateral primary osteoarthritis of first carpometacarpal joint, left hand based on the most recent General Equivalence Mappings (GEMS) information.