All ICD10 Codes

T67

Non-Billable
ChapterS00–T88
Rankcategory
Official Description

Effects of heat and light

Metadata & Insights
  • •2026 ICD-10-CM Edition - Effective October 1, 2025.
  • •Non-billable category (requires more specific sub-code).
  • •Chapter 19: Injury, Poisoning and Certain Other Consequences of External Causes (S00-T88).

CH19 Parent Instructions

Excludes2(Not included here)
Use Additional Code
  • code to identify any retained foreign body, if applicable (Z18.-)

T66-T78 Parent Instructions

Code Also
  • , if applicable, place of occurrence, such as:
  • highway rest stop (Y92.523)
  • school (private) (public) (state) as the place of occurrence of the external cause (Y92.21-)
  • service areas as the place of occurrence of the external cause (Y92.52-)
  • single-family non-institutional (private) house as the place of occurrence of the external cause (Y92.01-)
  • transport vehicle as the place of occurrence of the external cause (Y92.81-)

Instructional Notes

Excludes1(Not coded here)
  • 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)

Clinical Hierarchy

CH19Injury, poisoning and certain other consequences of external causes (S00-T88)
T66-T78Other and unspecified effects of external causes (T66-T78)
T67Effects of heat and light
T67.0Heatstroke and sunstroke
T67.1Heat syncope
T67.2Heat cramp
T67.3Heat exhaustion, anhydrotic
T67.4Heat exhaustion due to salt depletion
T67.5Heat exhaustion, unspecified
T67.6Heat fatigue, transient
T67.7Heat edema
T67.8Other effects of heat and light
T67.9Effect of heat and light, unspecified

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to T67:

blockT66-T78
Other and unspecified effects of external causes (T66-T78)
View context instructions
chapterCH19
Injury, poisoning and certain other consequences of external causes (S00-T88)
View context instructions

Alphabetic Index Mentions

These are Diagnosis Index lookup paths that route to T67. Use them as entry terms for search, then confirm final coding instructions in the Tabular List and notes above.

25 raw paths
Apoplexia, apoplexy, apoplectic1 unique routes
heat→T67
Collapse1 unique routes
heat→T67
Cramp (s)3 unique routes
fireman→T67
heat→T67
stoker's→T67
Depletion1 unique routes
salt or sodium
causing heat exhaustion or prostration→T67
Disease, diseased1 unique routes
Edsall's→T67
Edema, edematous (infectious) (pitting) (toxic)1 unique routes
heat→T67
Edsall's disease1 unique routes
Direct index entry→T67
Exhaustion, exhaustive (physical NEC)3 unique routes
heat→T67(3 variants)
due to(2 variants)
salt depletion→T67
water depletion→T67
Fatigue1 unique routes
heat (transient)→T67
Fever (inanition) (of unknown origin) (persistent) (with chills) (with rigor)3 unique routes
due to
heat→T67
heat (effects)→T67
thermic→T67
Heat (effects)9 unique routes
Direct index entry→T67
apoplexy→T67
collapse→T67
cramps→T67
edema→T67
excessive→T67(2 variants)
specified effect NEC→T67
exhaustion→T67(2 variants)
anhydrotic→T67

MS-DRG Classification

2026

No direct MS-DRG triggers identified.

Cross Reference

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