Skip to content
Dx

ICD-10-CM 2027

ICD-10 code for heat pyrexia

T67.01

Heatstroke and sunstroke

Header — needs a more specific code

From the official ICD-10-CM alphabetic index entry “Pyrexia (of unknown origin) › heat”. Page updated September 29, 2026.

About coding heat pyrexia

The ICD-10-CM code for heat pyrexia is T67.01 (Heatstroke and sunstroke).

Within T67.0 (heatstroke and sunstroke), T67.01 is specifically for heatstroke and sunstroke. Related codes cover exertional heatstroke (T67.02) and other heatstroke and sunstroke (T67.09).

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 was added in FY2020, effective October 1, 2019.

Common questions about heat pyrexia ICD-10 codes

What is the ICD-10 code for heat pyrexia?

T67.01 — Heatstroke and sunstroke (a header code; report a more specific subcode).

Is T67.01 billable?

No. T67.01 is a header code. Report one of its more specific subcodes instead.