ICD-10 Code I25.710 – Atherosclerosis of autologous vein coronary artery bypass graft(s) with unstable angina pectoris (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I25.710 – Atherosclerosis of autologous vein coronary artery bypass graft(s) with unstable angina pectoris
What it is
This code identifies narrowing or blockage from atherosclerosis in an autologous vein graft used for coronary artery bypass surgery, with unstable angina present. It tells you the graft is the affected coronary conduit, not the native artery.
Clinical signs
Typical documentation includes prior CABG using the patient’s own vein and current unstable angina, such as chest pain at rest or worsening angina pattern. Clinical features vary; refer to documentation.
When to use this code
Use this code when the record clearly states atherosclerosis of an autologous vein coronary bypass graft and unstable angina pectoris. You should apply it when both conditions are documented together, whether the encounter is for evaluation, monitoring, or follow-up of the graft disease. Check documentation if the graft type or angina status is unclear.
Do not use for
Do not use it for atherosclerosis of native coronary arteries, other bypass graft types, or stable angina without unstable angina pectoris. Do not guess the graft material; check documentation.
Coding tip
Verify that the bypass graft is autologous vein and that unstable angina is explicitly documented before assigning I25.710.