ICD-10 Code I25.759 – Atherosclerosis of native coronary artery of transplanted heart with unspecified angina pectoris (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I25.759 – Atherosclerosis of native coronary artery of transplanted heart with unspecified angina pectoris
What it is
This code identifies atherosclerotic narrowing in the patient’s own coronary artery within a transplanted heart, with angina documented but not further specified. It reflects coronary artery disease affecting the grafted heart’s native coronary vessels.
Clinical signs
Patients may have chest discomfort, pressure, or other ischemic symptoms consistent with angina. Documentation should support coronary atherosclerosis in the transplanted heart; clinical features vary, so refer to documentation.
When to use this code
Use this code when the provider documents atherosclerosis of a native coronary artery in a transplanted heart and specifies angina without naming stable, unstable, or variant type. It fits follow-up, evaluation, or problem-list documentation when the diagnosis is confirmed. Check documentation if the angina type is stated elsewhere.
Do not use for
Do not use it when the record identifies a different angina type, such as stable or unstable angina, or when coronary disease is not documented in a transplanted heart. Do not assign it for nonspecific chest pain alone.
Coding tip
Confirm both the transplanted-heart context and the exact angina wording before assigning I25.759.