T67 Effects of heat and light

Category / Non-billable header 13 subcodes

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

Excludes 1 (cannot be coded together)

  • erythema [dermatitis] ab igne (L59.0)
  • malignant hyperpyrexia due to anesthesia (T88.3)
  • radiation-related disorders of the skin and subcutaneous tissue (L55-L59)

Excludes 2 (not included here)

  • burns (T20-T31)
  • sunburn (L55.-)
  • sweat disorder due to heat (L74-L75)

Subcodes

Subcodes are listed below for reference. Detail pages are not available for chapters 11–22.

Code Description Billable
T67..0 Heatstroke and sunstroke No
T67..01 Heatstroke and sunstroke No
T67..02 Exertional heatstroke No
T67..09 Other heatstroke and sunstroke No
T67..1 Heat syncope No
T67..2 Heat cramp No
T67..3 Heat exhaustion, anhydrotic No
T67..4 Heat exhaustion due to salt depletion No
T67..5 Heat exhaustion, unspecified No
T67..6 Heat fatigue, transient No
T67..7 Heat edema No
T67..8 Other effects of heat and light No
T67..9 Effect of heat and light, unspecified No

Last reviewed: September 2026