ICD-10-CM 2027
ICD-10 code for heat exhaustion
From the official ICD-10-CM alphabetic index entry “Exhaustion, exhaustive (physical NEC) › heat”. Page updated September 29, 2026.
About coding heat exhaustion
The ICD-10-CM code for heat exhaustion is T67.5 (Heat exhaustion, unspecified). The official index lists 2 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on T67.5.
Within T67, choose T67.5 (Heat exhaustion, unspecified) only when documentation doesn't support a more specific option: heatstroke and sunstroke (T67.0), heat syncope (T67.1), heat cramp (T67.2), heat exhaustion, anhydrotic (T67.3), heat exhaustion due to salt depletion (T67.4), heat fatigue, transient (T67.6), heat edema (T67.7), other effects of heat and light (T67.8) and 1 more.
Codes in this range require a 7th character: A for initial encounter, D for subsequent encounter and S for sequela. Use placeholder "X" characters to fill any empty positions before the 7th character.
It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.
More specific heat exhaustion codes (official index)
Common questions about heat exhaustion ICD-10 codes
What is the ICD-10 code for heat exhaustion?
- T67.5 — Heat exhaustion, unspecified (a header code; report a more specific subcode). More specific codes apply when the documentation supports them: T67.4, T67.3.
Is T67.5 billable?
- No. T67.5 is a header code. Report one of its more specific subcodes instead.