I25
ICD-10Non-billable categoryChronic ischemic heart disease
Official ICD-10-CM descriptor (FY2026)
Chronic ischemic heart disease
I25 is a category heading, not a billable code. CMS does not accept it on a claim; report one of the more specific codes beneath it.
Excludes2
Not included here. The condition is not part of this code, but a patient may have both, and both codes may be reported together.
- non-ischemic myocardial injury (I5A)
Use additional code
Report an additional code to identify the associated condition.
- 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)
More specific codes under I25
- I25.1Atherosclerotic heart disease of native coronary arterycategory
- I25.2Old myocardial infarction
- I25.3Aneurysm of heart
- I25.4Coronary artery aneurysm and dissectioncategory
- I25.5Ischemic cardiomyopathy
- I25.6Silent myocardial ischemia
- I25.7Athscl CABG and cor art of transplanted heart w ang pctrscategory
- I25.8Other forms of chronic ischemic heart diseasecategory
- I25.9Chronic ischemic heart disease, unspecified
Where this code sits
Krasyn AI Coder
Get code suggestions automatically as you type notes. Free for 50 analyses.
Install for Chrome — freeSource
ICD-10-CM FY2026. Centers for Medicare & Medicaid Services (CMS) / National Center for Health Statistics (NCHS), “2026 ICD-10-CM Code Descriptions in Tabular Order” (icd10cm_order_2026.txt). Download the original file from cms.gov. Public domain (US Government work). Descriptors, billable flags and instructional notes on this page are reproduced from that file without modification. Krasyn adds no clinical guidance.