M18.5 - Other unilateral secondary osteoarthritis of first carpometacarpal joint M18 - Osteoarthritis of first carpometacarpal joint M18.5 - Other unilateral secondary osteoarthritis of first carpometacarpal joint
M18.50 - Other unilateral secondary osteoarthritis of first carpometacarpal joint, unspecified hand M18.51 - Other unilateral secondary osteoarthritis of first carpometacarpal joint, right hand M18.52 - Other unilateral secondary osteoarthritis of first carpometacarpal joint, left hand