Left thumb carpometacarpal osteoarthritis icd 10 July 8, 2019 16 32 64 128 Icd 10 code for left thumb carpometacarpal osteoarthritis Left thumb oa icd 10 Left thumb cmc osteoarthritis icd 10 Arthritis carpometacarpal joint thumb icd 10 Carpometacarpal osteoarthritis icd 10 Osteoarthritis of thumb icd 10