ICD-10 Code I25.11 – Atherosclerotic heart disease of native coronary artery with angina pectoris (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I25.11 – Atherosclerotic heart disease of native coronary artery with angina pectoris
What it is
This code identifies coronary artery disease in a native coronary vessel caused by atherosclerosis, with angina pectoris present. Use it when documentation links the ischemic chest pain to the underlying coronary atherosclerosis.
Clinical signs
Typical findings include exertional chest discomfort, pressure, or tightness that is consistent with angina. Clinical features vary; refer to documentation for whether the angina is stable, unstable, or otherwise specified.
When to use this code
Use I25.11 when the provider documents atherosclerotic heart disease of a native coronary artery and also documents angina pectoris. It fits outpatient, inpatient, or problem-list documentation when the coronary disease is chronic and the angina is part of the diagnosis.
Query if the record only says coronary artery disease, chest pain, or ischemia without clearly stating angina. Also verify that the vessel is native coronary artery, not a bypass graft or transplant vessel.
Do not use for
Do not use this code for chest pain without documented angina or for coronary disease without an atherosclerotic cause. Check documentation if the record refers to bypass graft disease, transplant complications, or acute coronary syndrome.
Coding tip
Match the site and vessel type carefully, and confirm the angina is explicitly linked to the native coronary atherosclerosis.