Heat edema

This code signifies a condition characterized by swelling of the extremities, typically the ankles and feet, due to vasodilation and fluid extravasation in response to heat exposure. It is a mild form of heat illness, often occurring in individuals unacclimatized to hot environments.

Apply this code when documentation explicitly states "heat edema" or describes peripheral edema directly attributed to environmental heat exposure, without signs of more severe heat-related illnesses. Supporting documentation should confirm the patient's exposure to heat and the presence of localized swelling.

• Differentiate from other causes of edema (e.g., cardiac, renal, venous insufficiency) which would require different codes.
• Do not use if the patient exhibits symptoms of heat exhaustion or heatstroke; those conditions have distinct codes.
• Ensure the documentation clearly links the edema to heat exposure; simply having edema in a hot environment is insufficient.