Chapter 13 - Diseases of the musculoskeletal system and connective tissue (M00-M99)»Inflammatory polyarthropathies (M05-M14)»Rheumatoid arthritis, unspecified (M06.9)
M06.9
Rheumatoid arthritis, unspecified
Related indications (MeSH) (1)
Arthritis, Rheumatoid638 drugs (246 approved, 392 experimental)
A chronic systemic disease, primarily of the joints, marked by inflammatory changes in the synovial membranes and articular structures, widespread fibrinoid degeneration of the collagen fibers in mesenchymal tissues, and by atrophy and rarefaction of bony structures. Etiology is unknown, but autoimmune mechanisms have been implicated.