ICD-10 Code: M18.9 – Osteoarthritis of first carpometacarpal joint, unspecified

ICD-10 code M18.9 corresponds to Osteoarthritis of first carpometacarpal joint, unspecified. This code is classified under the chapter M18 Osteoarthritis of first carpometacarpal joint, which is part of the M00-M25: Arthropathies category.

The parent chapter is Diseases of the musculoskeletal system and connective tissue.