ICD-10-CM > M00-M99 > M05-M14 > M05 > M05.2 > M05.26 M05.26 Rheumatoid vasculitis with rheumatoid arthritis of knee Non-Billable/Non-Specific Codes M05.261Rheumatoid vasculitis with rheumatoid arthritis of right kneeM05.262Rheumatoid vasculitis with rheumatoid arthritis of left kneeM05.269Rheumatoid vasculitis with rheumatoid arthritis of unspecified knee