Rupture of synovium, right finger(s)

This code signifies a tear or break in the synovial membrane surrounding a joint in one or more fingers of the right hand. This injury typically results in pain, swelling, and impaired joint function due to the disruption of the lubricating synovial fluid containment.

Apply this code when documentation clearly indicates a spontaneous or traumatic rupture of the synovium affecting the right finger(s). This diagnosis is often supported by physical examination findings, imaging studies (e.g., MRI), and a history of acute injury or degenerative changes.

• Differentiate from other finger injuries like tendon ruptures (M66.4-) or ligamentous tears (S63.5-).
• Ensure laterality (right) is explicitly documented.
• Consider an external cause code if the rupture is due to trauma.