ICD-10 Code: M19.91 – Primary osteoarthritis, unspecified site

ICD-10 code M19.91 corresponds to Primary osteoarthritis, unspecified site. This code is classified under the chapter M19 Other and unspecified osteoarthritis, which is part of the M00-M25: Arthropathies category.

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