Exertional heatstroke, initial encounter

This code signifies a severe, life-threatening form of heat illness caused by strenuous physical activity in hot environments, leading to a core body temperature typically exceeding 104°F (40°C) and central nervous system dysfunction. Patients present with altered mental status, seizures, or coma, alongside other signs of organ damage.

Apply this code for the initial encounter of a patient diagnosed with heatstroke directly resulting from physical exertion, such as athletes, military personnel, or laborers working in hot conditions. This includes cases where the patient is first evaluated and treated for the acute effects of exertional heatstroke.

• Ensure documentation clearly links the heatstroke to physical exertion.
• Confirm this is the first time the patient is being treated for this specific episode of exertional heatstroke.
• Code any associated complications, such as acute kidney injury or rhabdomyolysis, separately.