ICD-10 Code I25.798 – Atherosclerosis of other coronary artery bypass graft(s) with other forms of angina pectoris (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I25.798 – Atherosclerosis of other coronary artery bypass graft(s) with other forms of angina pectoris
What it is
This code identifies atherosclerotic narrowing or blockage in a coronary artery bypass graft, along with angina that is not classified as unstable or due to a documented acute coronary syndrome. Use it when the graft disease and angina are both clearly documented.
Clinical signs
Patients may report chest discomfort, pressure, or exertional symptoms consistent with angina. Clinical features vary; refer to documentation, and confirm that the provider links the symptoms to graft atherosclerosis rather than another cardiac cause.
When to use this code
Use I25.798 when the record states atherosclerosis affecting an “other” coronary bypass graft and also documents other forms of angina pectoris. This is appropriate for follow-up visits, chronic coronary disease management, or evaluations where the graft lesion is established. Check documentation if the type of angina or graft involved is unclear.
Do not use for
Do not use this code for unstable angina, acute myocardial infarction, or angina without documented graft atherosclerosis. Do not assign it if the bypass graft type or the angina classification is not specified; check documentation.
Coding tip
Verify that the provider documents both the bypass graft atherosclerosis and the specific angina type before assigning I25.798.