Ankylosis, right ankle

This code signifies the pathological fusion or immobility of the right ankle joint. This condition can result from various underlying causes, including chronic arthritis, trauma, or infection, leading to a significant loss of range of motion and functional impairment.

Apply this code when documentation explicitly states ankylosis affecting the right ankle. This is appropriate for patients presenting with a stiff, fused, or immobile right ankle joint, often confirmed by physical examination and imaging studies like X-rays.

• Ensure laterality is clearly documented as "right ankle" to support this specific code.
• Do not confuse with arthrodesis (surgical fusion), which has distinct procedure codes.
• Code any underlying cause of the ankylosis (e.g., rheumatoid arthritis, post-traumatic arthritis) as a primary or secondary diagnosis.