ICD-10 Code I24.8 – Other forms of acute ischemic heart disease (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I24.8 – Other forms of acute ischemic heart disease
What it is
I24.8 identifies acute ischemic heart disease that does not fit the more specific ICD-10 categories. Use it when the record documents an acute ischemic cardiac event, but the exact subtype is not named.
Clinical signs
Clinical features vary; refer to documentation. Commonly, the record shows acute chest pain, ischemic ECG changes, or other evidence of reduced blood flow to the heart.
When to use this code
Use this code when the provider documents an acute ischemic heart condition and no more specific diagnosis is available. It may apply when the note says “other acute ischemic heart disease” or describes an acute ischemic event without further detail. Check documentation if the exact entity is unclear.
Do not use for
Do not use it when the record supports a more specific acute coronary syndrome, myocardial infarction, or chronic ischemic heart disease code. If the documentation is insufficient, check documentation rather than guessing.
Coding tip
Code I24.8 only after confirming the provider did not document a more specific ischemic heart diagnosis.