I25.730
BillableAtherosclerosis of nonautologous biological coronary artery bypass graft(s) with unstable angina pectoris
HCC Category Mapping
V28HCC 229 — Unstable Angina and Other Acute Ischemic Heart Disease
0.000V24HCC 87 — Unstable Angina and Other Acute Ischemic Heart Disease
0.274ESRDHCC 87 — Unstable Angina and Other Acute Ischemic Heart Disease
0.000RxHCCHCC 188 — Coronary Artery Disease and Angina
0.000What This Code Means
Plaque buildup in a biological tissue graft (not from the patient's own body) used for heart bypass surgery, causing unstable chest pain.
Coding Tips
- •Distinguish between autologous (patient's own tissue) and nonautologous biological grafts in documentation
- •Confirm the graft material is biological in nature, not synthetic
Clinical Significance
This code identifies atherosclerotic disease in a nonautologous biological coronary artery bypass graft (allograft or xenograft tissue) with unstable angina. Nonautologous biological grafts, such as cadaveric or bovine grafts, have different degenerative patterns compared to autologous grafts. Unstable angina in this context represents an acute ischemic syndrome requiring emergent evaluation and may indicate graft failure or severe stenosis.
Documentation Requirements
- ✓History of CABG with nonautologous biological graft type specified (e.g., cadaveric, bovine, porcine graft)
- ✓Clinical or angiographic evidence of atherosclerotic disease within the biological graft
- ✓Documentation of unstable angina — new onset, crescendo pattern, or rest angina
- ✓Acute cardiac evaluation including troponins, ECG, and hemodynamic status
- ✓Urgent management plan for the acute ischemic syndrome
Excludes 1 — Do NOT code together
- unstable angina without atherosclerosis of nonautologous biological coronary artery bypass graft(s) (I20.0)
Commonly Confused Codes
I25.710 — Autologous vein CABG with unstable angina; patient's own vein, not biological graftI25.720 — Autologous artery CABG with unstable angina; patient's own artery, not biological graftI25.790 — Other CABG with unstable angina; for synthetic or unclassified graft typesI20.0 — Unstable angina; does not capture graft-specific atherosclerosis
Code Hierarchy
└I25Chronic ischemic heart disease└I25.7Atherosclerosis of coronary artery bypass graft(s) and coronary artery of transplanted heart with angina pectoris└I25.73Atherosclerosis of nonautologous biological coronary artery bypass graft(s) with angina pectoris└I25.730Atherosclerosis of nonautologous biological coronary artery bypass graft(s) with unstable angina pectoris
└I25.730Atherosclerosis of nonautologous biological coronary artery bypass graft(s) with unstable angina pectoris