Pauciarticular juvenile rheumatoid arthritis, unsp ank/ft

This code signifies a chronic inflammatory joint disease affecting four or fewer joints, specifically when the ankle and/or foot are involved, and the laterality (right or left) is not documented. It is a form of juvenile idiopathic arthritis (JIA) characterized by persistent synovitis.

Use this code when documentation clearly states pauciarticular juvenile rheumatoid arthritis affecting the ankle and/or foot, and the specific side (right or left) is not specified. This diagnosis is typically made by a rheumatologist based on clinical presentation, laboratory findings, and imaging.

• Ensure the documentation specifies "pauciarticular" and involvement of the ankle and/or foot.
• Avoid using this code if laterality is documented; instead, choose the more specific M08.471 or M08.472.
• Do not confuse with polyarticular JIA (M08.3-) or other forms of JIA.