Algoneurodystrophy, left lower leg

This code signifies algoneurodystrophy, also known as Complex Regional Pain Syndrome (CRPS) Type I, affecting the left lower leg. It describes a chronic pain condition characterized by severe, burning pain, swelling, and trophic changes in the affected limb, without a demonstrable nerve lesion.

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

• Ensure laterality is precisely documented; this code is specific to the left lower leg.
• Distinguish from CRPS Type II (causalgia), which involves a confirmed nerve injury and is coded differently.
• Look for terms like "reflex sympathetic dystrophy" (RSD) as an older synonym for algoneurodystrophy.