ICD-10 Code I25.720 – Atherosclerosis of autologous artery coronary artery bypass graft(s) with unstable angina pectoris (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I25.720 – Atherosclerosis of autologous artery coronary artery bypass graft(s) with unstable angina pectoris
What it is
This code identifies atherosclerotic narrowing in an autologous coronary bypass graft, with unstable angina pectoris. Use it when documentation links the graft disease to unstable chest pain due to coronary artery disease.
Clinical signs
Typical findings include angina that is new, worsening, or occurring at rest, with evidence of coronary ischemia. Clinical features vary; refer to documentation.
When to use this code
Use I25.720 when the provider documents atherosclerosis in an autologous artery coronary bypass graft and also documents unstable angina pectoris. The graft must be the source of the atherosclerotic disease. If the record only says chest pain or graft disease without unstable angina, check documentation.
Do not use for
Do not use this code for stable angina, acute myocardial infarction, or graft problems without documented atherosclerosis and unstable angina. Do not assume the diagnosis from symptoms alone.
Coding tip
Assign this code only when both the graft atherosclerosis and unstable angina are clearly documented together.