Rheu arthrit with rheu factor of oth site w/o org/sys invl

This code signifies seropositive rheumatoid arthritis affecting a specific joint or anatomical site, excluding the hands and feet, without any associated systemic complications or organ involvement. It indicates the presence of rheumatoid factor (RF) in a patient diagnosed with RA.

Use this code when documentation confirms a diagnosis of rheumatoid arthritis with positive rheumatoid factor and the affected joint is explicitly stated (e.g., elbow, shoulder, knee), but not the hands or feet. This code is appropriate when there is no evidence of extra-articular manifestations or organ system involvement.

• Ensure the documentation specifies a site other than the hands or feet; otherwise, consider M05.70, M05.71, or M05.73.
• Verify the presence of rheumatoid factor (seropositive RA) is clearly documented.
• Do not use if there is any mention of systemic involvement (e.g., vasculitis, lung disease, cardiac involvement); instead, refer to codes in the M05.3-M05.7 series with a fifth character indicating organ involvement.