ICD-10 block

I20–I25 Ischaemic heart diseases

The block I20–I25 of ICD-10 is titled “Ischaemic heart diseases”. It is part of Chapter IX, Diseases of the circulatory system, and holds 6 groups.

What I20–I25 includes

Conditions and terms that are coded here.

  • with mention of hypertension I10-I15

Coding notes

  • Use additional code, if desired, to identify presence of hypertension.
  • For morbidity, duration as used in categories I21, I22, I24 and I25 refer to the interval elapsing between onset of the ischaemic episode and admission to care. For mortality, duration refers to the interval elapsing between onset and death.

Codes in I20–I25

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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