Skip to content
Dx

ICD-10-CM 2027

ICD-10 code for fatigue transient heat

T67.6

Heat fatigue, transient

Header — needs a more specific code

From the official ICD-10-CM alphabetic index entry “Heat (effects) › fatigue (transient)”. Page updated September 29, 2026.

About coding fatigue transient heat

The ICD-10-CM code for fatigue transient heat is T67.6 (Heat fatigue, transient).

Within T67 (effects of heat and light), T67.6 is specifically for heat fatigue, transient. Related codes cover 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 exhaustion, unspecified (T67.5), 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.

Common questions about fatigue transient heat ICD-10 codes

What is the ICD-10 code for fatigue transient heat?

T67.6 — Heat fatigue, transient (a header code; report a more specific subcode).

Is T67.6 billable?

No. T67.6 is a header code. Report one of its more specific subcodes instead.