ICD-10 Code I25.8 – Other forms of chronic ischemic heart disease (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I25.8 – Other forms of chronic ischemic heart disease
What it is
I25.8 identifies chronic ischemic heart disease that does not fit a more specific ICD-10 category. It covers long-standing reduced blood flow to the heart when documentation supports another chronic ischemic form.
Clinical signs
Clinical features vary; refer to documentation. Common findings may include a history of coronary artery disease, prior angina, or evidence of chronic myocardial ischemia on evaluation.
When to use this code
Use this code when the provider documents chronic ischemic heart disease and no more specific I25.- code applies. It may also fit cases described as another chronic ischemic form, with no separate, better-defined diagnosis. Check documentation for the exact wording.
Do not use for
Do not use it for acute ischemic events, such as acute myocardial infarction or unstable angina. If the record specifies a different chronic ischemic subtype, code that more specific diagnosis instead.
Coding tip
Code I25.8 only after confirming the documentation supports chronic ischemic heart disease and no more specific code is available.