ICD-10 Code I24.0 – Acute coronary thrombosis not resulting in myocardial infarction (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I24.0 – Acute coronary thrombosis not resulting in myocardial infarction
What it is
I24.0 identifies an acute clot in a coronary artery that does not cause myocardial infarction. Use it when the record documents coronary thrombosis without heart muscle death.
Clinical signs
Patients may have chest pain, ischemic symptoms, or evidence of acute coronary obstruction. Clinical features vary; refer to documentation for whether infarction was excluded.
When to use this code
Use this code when the provider specifically diagnoses acute coronary thrombosis and states that myocardial infarction did not occur. It may apply during evaluation of acute ischemic chest pain or angiographic coronary clot findings. Check documentation for the final assessment.
Do not use for
Do not use I24.0 if the record confirms acute myocardial infarction or another specific ischemic heart disease diagnosis. Do not assign it for chronic coronary disease or unspecified chest pain alone.
Coding tip
Confirm that the note clearly distinguishes thrombosis from infarction before assigning I24.0.