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ICD-10 block

W85–W99 Exposure to electric current, radiation and extreme ambient air temperature and pressure

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The block W85–W99 of ICD-10 is titled “Exposure to electric current, radiation and extreme ambient air temperature and pressure”. It is part of Chapter XX, External causes of morbidity and mortality, and holds 11 groups.

What W85–W99 excludes

Conditions that look similar but belong under another code.

  • abnormal reaction to a complication of treatment, without mention of misadventure Y84.2
  • misadventure to patient in surgical and medical procedures Y63.2-Y63.5
  • exposure to:
    • natural: cold X31
    • natural: heat X30
    • radiation NOS X39
    • sunlight X32
  • victim of lightning X33

Coding notes

  • See at the beginning of this chapter for the classification of the place of occurrence and activity

Codes in W85–W99

Based on the World Health Organization’s International Statistical Classification of Diseases and Related Health Problems, 10th revision (ICD-10), 2019 version, and the national editions published by each country’s health authority. This page is a reference, not coding advice; follow your national coding rules when you report.

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