Rheu arthritis of unsp ank/ft w involv of organs and systems

This code signifies rheumatoid arthritis affecting an unspecified ankle or foot, accompanied by systemic manifestations impacting other organ systems. This indicates a more severe or widespread form of rheumatoid arthritis beyond just the joint involvement.

Apply this code when documentation confirms a diagnosis of rheumatoid arthritis with involvement of the ankle or foot, and there is explicit mention of systemic complications or involvement of other organs (e.g., lungs, heart, kidneys, vasculitis). Supporting documentation should clearly state both the joint involvement and the extra-articular manifestations.

• Ensure documentation specifies "unspecified" ankle and foot if laterality is not provided.
• Do not use this code if the systemic involvement is not explicitly documented; instead, consider codes for rheumatoid arthritis without organ involvement.
• Always sequence this code after the primary diagnosis if the rheumatoid arthritis is a manifestation of another underlying condition.