ICD-10 block

T36–T50 Poisoning by drugs, medicaments and biological substances

The block T36–T50 of ICD-10 is titled “Poisoning by drugs, medicaments and biological substances”. It is part of Chapter XIX, Injury, poisoning and certain other consequences of external causes, and holds 15 groups.

What T36–T50 includes

Conditions and terms that are coded here.

  • overdose of these substances
  • wrong substance given or taken in error

What T36–T50 excludes

Conditions that look similar but belong under another code.

  • abuse of non-dependence-producing substances F55
  • adverse effects ["hypersensitivity", "reaction", etc.] of correct substance properly administered; such cases are to be classified according to the nature of the adverse effect, such as:
  • intoxication meaning inebriation F10-F19
  • drug reaction and poisoning affecting the fetus and newborn P00-P96
  • pathological drug intoxication F10-F19

Codes in T36–T50

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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