I25
⚠ Non-billable (Header)Chronic ischemic heart disease
Diseases of the circulatory system (I00-I99)
⚠️ This is a category header code — not billable. Use a more specific child code below.
📋 Code Instructions
- • code to identify:
- • chronic total occlusion of coronary artery (I25.82)
- • exposure to environmental tobacco smoke (Z77.22)
- • history of tobacco dependence (Z87.891)
- • occupational exposure to environmental tobacco smoke (Z57.31)
- • tobacco dependence (F17.-)
- • tobacco use (Z72.0)
⚠️ Excludes2
directMay be coded together if both conditions coexist
- • non-ischemic myocardial injury (I5A)
Child Codes (9)
I25.1Atherosclerotic heart disease of native coronary arteryI25.2Old myocardial infarctionI25.3Aneurysm of heartI25.4Coronary artery aneurysm and dissectionI25.5Ischemic cardiomyopathyI25.6Silent myocardial ischemiaI25.7Atherosclerosis of coronary artery bypass graft(s) and coronary artery of transplanted heart with angina pectorisI25.8Other forms of chronic ischemic heart diseaseI25.9Chronic ischemic heart disease, unspecified
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CodeI25
BillableNo — Header code
CategoryDiseases of the circulatory system (I00-I99)
Excludes10 rule(s)
Excludes21 note(s)
Child codes9
Data Source
CMS ICD-10-CM 2026 Tabular List
Updated October 1, 2025 (FY2026)