T67Effects of heat and light
Code usage status
Primary diagnosis
Select a more specific code
Apply only when it matches the confirmed diagnosis and the documented clinical record.
Specificity
Do not use T67 directly
Use the most specific code supported by the record.
- Group T66-T78
- Other and unspecified effects of external causes
- Official Vietnamese name
- Tác động của nhiệt và/hoặc ánh sáng
- Additional WHO coding guidance
- Excl.: burns (T20-T31) erythema [dermatitis] ab igne (L59.0) malignant hyperthermia due to anaesthesia (T88.3) radiation- related disorders of the skin and subcutaneous tissue (L55-L59) sunburn (L55.-) sweat disorders
Related T67 codes
T67.0
Primary diagnosis candidate
Heatstroke and sunstroke
T67.1
Primary diagnosis candidate
Heat syncope
T67.2
Primary diagnosis candidate
Heat cramp
T67.3
Primary diagnosis candidate
Heat exhaustion, anhydrotic
T67.4
Primary diagnosis candidate
Heat exhaustion due to salt depletion
T67.5
Primary diagnosis candidate
Heat exhaustion, unspecified
T67.6
Primary diagnosis candidate
Heat fatigue, transient
T67.7
Primary diagnosis candidate
Heat oedema
T67.8
Primary diagnosis candidate
Other effects of heat and light
T67.9
Primary diagnosis candidate
Effect of heat and light, unspecified
Clinical record checklist
View coding guide →- Confirm that the code matches the final documented diagnosis.
- Use one primary-diagnosis code and record only relevant additional conditions.
- Review Ministry indicators, inclusions, exclusions and notes.
- Do not infer a diagnosis beyond the clinical record.
2026 regulatory basis
Indicators are taken from columns 24–29 of the classification accompanying Circular 06/2026/TT-BYT, cross-referenced with Decision 1849/QĐ-BYT and Official Dispatch 4059/BYT-BH.
