T67.01 Heatstroke and sunstroke

The ICD-10-CM code for Heatstroke and sunstroke is T67.01 (FY2026). It is a billable, claim-ready diagnosis code.

Classification

Chapter

19: Injury, poisoning and certain other consequences of external causes (S00-T88)

Section

T66-T78: Other and unspecified effects of external causes (T66-T78)

Category T67

14 codes (12 billable)

FY2026 Status

Stable since FY2024

Also Known As

ICD-10-CM Alphabetic Index entries that lead to T67.01:

• Thermoplegia
• Siriasis
• Insolation (sunstroke)
• Ictus solaris, solis
• Sunstroke
• Apoplexia, apoplexy, apoplectic › heat
• Fever (inanition) (of unknown origin) (persistent) (with chills) (with rigor) › thermic
• Fever (inanition) (of unknown origin) (persistent) (with chills) (with rigor) › heat (effects)

Inclusion Terms

• Heat apoplexy
• Heat pyrexia
• Siriasis
• Thermoplegia

Official Coding Guidelines

Sequence blood vessel/nerve injury first (fragment)

injury is to the blood vessels or nerves, that injury should be sequenced first.

Do not assign injury codes for iatrogenic injuries; code complication

3) Iatrogenic injuries Injury codes from Chapter 19 should not be assigned for injuries that occur during, or as a result of, a medical intervention. Assign the appropriate complication code(s).

Source: CMS — ICD-10-CM Official Guidelines for Coding and Reporting, FY2026

References

• CMS — ICD-10-CM Official Code Set and Guidelines, FY2026
• CDC/NCHS — ICD-10-CM Files and Browser Tool