22Injury, poisoning or certain other consequences of external causes Other or unspecified effects of external causes NF01Effects of heat
NF01.0
category
Heat stroke
Definition Elevation of core body temperature above 40.6 degrees centigrade due to environmental heat exposure and a failure of thermoregulation. This is a potentially fatal disorder, particularly in infants and children.
Also indexed as
Heat stroke Sunstroke environmental hyperthermia heat apoplexy heat fever heat hyperpyrexia heat pyrexia heat stress heat-induced hyperthermia heatstroke siriasis sun stroke
Nearby in Effects of heat
International Classification of Diseases, Eleventh Revision (ICD-11), World Health Organization (WHO) 2019/2021, https://icd.who.int/browse11. Licensed under Creative Commons Attribution-NoDerivatives 3.0 IGO (CC BY-ND 3.0 IGO).
Release 2026-01.
View this entity in the official WHO ICD-11 browser .
This page reproduces WHO classification content for reference. It is not
medical advice and must not be used to diagnose or treat. For coding
decisions, consult the official release and your national coding guidelines.
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