T67 Effects of heat and light

⚠ Non-Billable ICD-10-CM 2026
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The ICD-10-CM code for Effects of heat and light is T67 (FY2026). It is a non-billable category code — select a more specific code below for claims.

Classification

Section
T66-T78: Other and unspecified effects of external causes (T66-T78)
Category T67
14 codes (12 billable)
FY2026 Status
Stable since FY2024
Excludes1
Not coded here. These conditions should NOT be coded together with T67.
  • erythema [dermatitis] ab igne (L59.0)
  • malignant hyperpyrexia due to anesthesia (T88.3)
  • radiation-related disorders of the skin and subcutaneous tissue (L55-L59)
Excludes2
Not included here. These conditions are coded elsewhere but may be coded together if applicable.
  • burns (T20-T31)
  • sunburn (L55.-)
  • sweat disorder due to heat (L74-L75)

Official Coding Guidelines

Sequence blood vessel/nerve injury first (fragment)

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

— ICD-10-CM Official Guidelines for Coding and Reporting, FY2026, Section I.C.19.b.2
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).

— ICD-10-CM Official Guidelines for Coding and Reporting, FY2026, Section I.C.19.b.3

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

References

Related Codes

More Specific Codes

T67.0 Heatstroke and sunstroke T67.01 Heatstroke and sunstroke T67.02 Exertional heatstroke T67.09 Other heatstroke and sunstroke T67.1 Heat syncope T67.2 Heat cramp T67.3 Heat exhaustion, anhydrotic T67.4 Heat exhaustion due to salt depletion T67.5 Heat exhaustion, unspecified T67.6 Heat fatigue, transient T67.7 Heat edema T67.8 Other effects of heat and light T67.9 Effect of heat and light, unspecified

Related Codes in T67

T67.0 Heatstroke and sunstroke T67.01 Heatstroke and sunstroke T67.02 Exertional heatstroke T67.09 Other heatstroke and sunstroke T67.1 Heat syncope T67.2 Heat cramp T67.3 Heat exhaustion, anhydrotic T67.4 Heat exhaustion due to salt depletion T67.5 Heat exhaustion, unspecified T67.6 Heat fatigue, transient T67.7 Heat edema T67.8 Other effects of heat and light T67.9 Effect of heat and light, unspecified
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Reviewed by Prajwal Shrestha, CPC, CRC
Certified Professional Coder (CPC) and Certified Risk Adjustment Coder (CRC) · AAPC Member ID 01997614 · About · Editorial policy · Content last reviewed: 2025-10-01

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