ICD-10 block

T51–T65 Toxic effects of substances chiefly nonmedicinal as to source

The block T51–T65 of ICD-10 is titled “Toxic effects of substances chiefly nonmedicinal as to source”. It is part of Chapter XIX, Injury, poisoning and certain other consequences of external causes, and holds 15 groups.

What T51–T65 excludes

Conditions that look similar but belong under another code.

  • corrosions T20-T32
  • localized toxic effects classified elsewhere A00-R99
  • respiratory conditions due to external agents J60-J70

Codes in T51–T65

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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