Exertional heatstroke, subsequent encounter

This code signifies a heatstroke event caused by strenuous physical activity, where the patient is receiving follow-up care for the sequelae or complications of the initial heatstroke. It indicates that the patient has previously been treated for exertional heatstroke and is now presenting for ongoing management or assessment related to that prior episode.

Use this code when documenting subsequent visits for a patient who previously experienced exertional heatstroke and is now being seen for residual symptoms, monitoring, or treatment of long-term effects. This includes follow-up appointments for organ damage assessment (e.g., kidney, liver), neurological deficits, or ongoing recovery from the initial heatstroke.

• Ensure documentation clearly indicates a follow-up encounter for a previously diagnosed exertional heatstroke.
• Do not use for the initial encounter of exertional heatstroke; a different code would apply for the acute event.
• Always code any associated sequelae or complications of the heatstroke in addition to this code.