I25 is the ICD-10 code for Chronic ischaemic heart disease. It is a three-character category divided into 9 subcodes; use the subcode whenever the record supports that level of detail. It belongs to the block I20–I25 (Ischaemic heart diseases) in Chapter IX, Diseases of the circulatory system.
- Code type
- Category (3 characters)
- Chapter
- IX · I00–I99
- Classification
- WHO ICD-10, 2019 version
What I25 excludes
Conditions that look similar but belong under another code.
- cardiovascular disease NOS I51.6
Subcodes of I25
- I25.0Atherosclerotic cardiovascular disease, so described
- I25.1Atherosclerotic heart disease
- I25.2Old myocardial infarction
- I25.3Aneurysm of heart
- I25.4Coronary artery aneurysm and dissection
- I25.5Ischaemic cardiomyopathy
- I25.6Silent myocardial ischaemia
- I25.8Other forms of chronic ischaemic heart disease
- I25.9Chronic ischaemic heart disease, unspecified
I25 in national editions
Countries report with their own edition of ICD-10. Most keep the WHO code and add more specific codes beneath it.
DI25Kronisk iskæmisk hjertesygdom
I25Pitkäaikainen iskeeminen sydänsairaus
I25Chronische ischämische Herzkrankheit
I25Cardiopathie ischémique chronique
I25chronische ischemische hartziekte
Listed through more specific codes:
- I25.700Atherosclerosis of coronary artery bypass graft(s), unspecified, with unstable angina pectoris
- I25.701Atherosclerosis of coronary artery bypass graft(s), unspecified, with angina pectoris with documented spasm
- I25.702Atherosclerosis of coronary artery bypass graft(s), unspecified, with refractory angina pectoris
- I25.708Atherosclerosis of coronary artery bypass graft(s), unspecified, with other forms of angina pectoris
- I25.709Atherosclerosis of coronary artery bypass graft(s), unspecified, with unspecified angina pectoris
- I25.710Atherosclerosis of autologous vein coronary artery bypass graft(s) with unstable angina pectoris
- I25.711Atherosclerosis of autologous vein coronary artery bypass graft(s) with angina pectoris with documented spasm
- I25.712Atherosclerosis of autologous vein coronary artery bypass graft(s) with refractory angina pectoris
- and 27 more national subcodes
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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