Algoneurodystrophy, right ankle and foot

This code represents algoneurodystrophy, also known as Complex Regional Pain Syndrome (CRPS) Type I, affecting the right ankle and foot. It is a chronic pain condition characterized by severe, burning pain, swelling, and trophic changes in the affected extremity, often triggered by trauma or surgery. The condition involves dysfunction of the sympathetic nervous system.

Use this code when documentation clearly indicates a diagnosis of algoneurodystrophy or CRPS Type I specifically localized to the patient's right ankle and foot. Supporting documentation should detail the characteristic symptoms such as allodynia, hyperalgesia, edema, skin temperature changes, and motor dysfunction in the specified anatomical area.

• Ensure laterality is precisely documented as "right" for the ankle and foot.
• Distinguish from CRPS Type II (causalgia), which involves a confirmed nerve injury.
• Look for terms like "reflex sympathetic dystrophy" (RSD) as an older synonym for this condition.