M05.2 - Rheumatoid vasculitis with rheumatoid arthritis
M05.26 - Rheumatoid vasculitis with rheumatoid arthritis of knee
M05.261 - Rheumatoid vasculitis with rheumatoid arthritis of right knee
M05.262 - Rheumatoid vasculitis with rheumatoid arthritis of left knee
M05.269 - Rheumatoid vasculitis with rheumatoid arthritis of unspecified knee