ICD-10 Code I25.10 – Atherosclerotic heart disease of native coronary artery without angina pectoris (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I25.10 – Atherosclerotic heart disease of native coronary artery without angina pectoris
What it is
This code identifies coronary artery disease caused by atherosclerosis in a native coronary artery, without documented angina. Use it when the record shows chronic ischemic heart disease but no current chest pain from angina.
Clinical signs
Findings may include known coronary atherosclerosis, prior cardiac testing, or a history of ischemic heart disease. Clinical features vary; refer to documentation.
When to use this code
Use I25.10 when the provider documents atherosclerotic heart disease or coronary artery disease in a native vessel and specifically states there is no angina pectoris. It also fits follow-up visits for established chronic coronary disease when angina is absent. Check documentation if the note mentions unstable symptoms or prior interventions.
Do not use for
Do not use this code if angina is documented, or if the record only shows coronary atherosclerosis without heart disease. Do not use it for bypass graft disease or other coronary vessels unless the documentation supports them.
Coding tip
Code the highest level of specificity in the note and confirm the absence of angina before assigning I25.10.