M18.1 - Unilateral primary osteoarthritis of first carpometacarpal joint M18 - Osteoarthritis of first carpometacarpal joint M18.1 - Unilateral primary osteoarthritis of first carpometacarpal joint
M18.10 - Unilateral primary osteoarthritis of first carpometacarpal joint, unspecified hand M18.11 - Unilateral primary osteoarthritis of first carpometacarpal joint, right hand M18.12 - Unilateral primary osteoarthritis of first carpometacarpal joint, left hand