How have these rheumatic musculoskeletal disorders been classified over the years?
1904—Dr. Goldthwaite, an orthopedic surgeon, makes the first attempt to classify the arthritides in to five categories: gout, infectious arthritis, hypertrophic arthritis (probably osteoarthritis), atrophic arthritis (probably rheumatoid arthritis), and chronic villous arthritis (probably traumatic arthritis).
1983—The ARA classification is revised based on the ninth edition of the International Classification of Disease (ICD 9).
2015—ICD 10 Diagnosis Codes are published. (M00-M99) contains 6929 diagnosis codes related to diseases of the musculoskeletal system and connective tissue. Notably, there are other ICD 10 chapters that include diagnostic codes for other arthritides (e.g. psoriatic arthritis [L40.5], others]. ICD 11 is being developed.