Effects of heat and light (T67)

• Injury, poisoning and certain other consequences of external causes (S00–T88)

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

    • Effects of heat and light (T67)

      • T67 Effects of heat and light

      • T67.0 Heatstroke and sunstroke

      • T67.01 Heatstroke and sunstroke

      • T67.01XA Heatstroke and sunstroke, initial encounter
      • T67.01XD Heatstroke and sunstroke, subsequent encounter
      • T67.01XS Heatstroke and sunstroke, sequela

      • T67.02 Exertional heatstroke

      • T67.02XA Exertional heatstroke, initial encounter
      • T67.02XD Exertional heatstroke, subsequent encounter
      • T67.02XS Exertional heatstroke, sequela

      • T67.09 Other heatstroke and sunstroke

      • T67.09XA Other heatstroke and sunstroke, initial encounter
      • T67.09XD Other heatstroke and sunstroke, subsequent encounter
      • T67.09XS Other heatstroke and sunstroke, sequela

      • T67.1 Heat syncope

      • T67.1XXA Heat syncope, initial encounter
      • T67.1XXD Heat syncope, subsequent encounter
      • T67.1XXS Heat syncope, sequela

      • T67.2 Heat cramp

      • T67.2XXA Heat cramp, initial encounter
      • T67.2XXD Heat cramp, subsequent encounter
      • T67.2XXS Heat cramp, sequela

      • T67.3 Heat exhaustion, anhydrotic

      • T67.3XXA Heat exhaustion, anhydrotic, initial encounter
      • T67.3XXD Heat exhaustion, anhydrotic, subsequent encounter
      • T67.3XXS Heat exhaustion, anhydrotic, sequela

      • T67.4 Heat exhaustion due to salt depletion

      • T67.4XXA Heat exhaustion due to salt depletion, initial encounter
      • T67.4XXD Heat exhaustion due to salt depletion, subsequent encounter
      • T67.4XXS Heat exhaustion due to salt depletion, sequela

      • T67.5 Heat exhaustion, unspecified

      • T67.5XXA Heat exhaustion, unspecified, initial encounter
      • T67.5XXD Heat exhaustion, unspecified, subsequent encounter
      • T67.5XXS Heat exhaustion, unspecified, sequela

      • T67.6 Heat fatigue, transient

      • T67.6XXA Heat fatigue, transient, initial encounter
      • T67.6XXD Heat fatigue, transient, subsequent encounter
      • T67.6XXS Heat fatigue, transient, sequela

      • T67.7 Heat edema

      • T67.7XXA Heat edema, initial encounter
      • T67.7XXD Heat edema, subsequent encounter
      • T67.7XXS Heat edema, sequela

      • T67.8 Other effects of heat and light

      • T67.8XXA Other effects of heat and light, initial encounter
      • T67.8XXD Other effects of heat and light, subsequent encounter
      • T67.8XXS Other effects of heat and light, sequela

      • T67.9 Effect of heat and light, unspecified

      • T67.9XXA Effect of heat and light, unspecified, initial encounter
      • T67.9XXD Effect of heat and light, unspecified, subsequent encounter
      • T67.9XXS Effect of heat and light, unspecified, sequela

Instructional Notations

Type 1 Excludes

A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.

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

Type 2 Excludes

A type 2 excludes note represents "Not included here". An excludes2 note indicates that the condition excluded is not part of the condition represented by the code, but a patient may have both conditions at the same time. When an Excludes2 note appears under a code, it is acceptable to use both the code and the excluded code together, when appropriate.

• burns T20 T31
• sunburn L55
• sweat disorder due to heat L74 L75

7th Character Note

Certain ICD-10-CM categories have applicable 7th characters. The applicable 7th character is required for all codes within the category, or as the notes in the Tabular List instruct. The 7th character must always be the 7th character in the data field. If a code that requires a 7th character is not 6 characters, a placeholder X must be used to fill in the empty characters.

• The appropriate 7th character is to be added to each code from category T67

7th Character

Indicates that a seventh character is to be assigned to codes in a subcategory.

• A - initial encounter
• D - subsequent encounter
• S - sequela

Clinical Terms

The following clinical terms provide additional context, helping users better understand the clinical background and common associations for each diagnosis listed in this section. Including related terms alongside ICD-10-CM codes supports coders, billers, and healthcare professionals in improving accuracy, enhancing documentation, and facilitating research or patient education.