I25.790
BillableAtherosclerosis of other 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
Narrowing of other coronary artery bypass grafts causing unstable chest pain that occurs at rest or with minimal exertion.
Coding Tips
- •This applies to non-transplanted heart bypass grafts; distinguish from transplant-specific codes (I25.76x)
- •Unstable angina indicates higher risk and may require more aggressive intervention
Clinical Significance
This code captures atherosclerotic disease in coronary artery bypass grafts of types not classified elsewhere (e.g., synthetic grafts such as Dacron or PTFE) with unstable angina. Synthetic grafts have distinct failure modes and atherosclerotic progression patterns. Unstable angina in this context represents an acute coronary syndrome requiring urgent intervention.
Documentation Requirements
- ✓History of CABG with graft type that does not fit autologous vein, autologous artery, or nonautologous biological categories
- ✓Evidence of atherosclerotic disease within the graft
- ✓Documentation of unstable angina pattern
- ✓Acute evaluation including cardiac biomarkers, ECG, and clinical assessment
- ✓Urgent management plan including consideration of revascularization
Excludes 1 — Do NOT code together
- unstable angina without atherosclerosis of other coronary artery bypass graft(s) (I20.0)
Commonly Confused Codes
I25.710 — Autologous vein CABG with unstable angina; saphenous vein graftI25.720 — Autologous artery CABG with unstable angina; internal mammary or radial artery graftI25.730 — Nonautologous biological CABG with unstable angina; biological allograft/xenograftI20.0 — Unstable angina; without 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└I25.79Atherosclerosis of other coronary artery bypass graft(s) with angina pectoris└I25.790Atherosclerosis of other coronary artery bypass graft(s) with unstable angina pectoris
└I25.790Atherosclerosis of other coronary artery bypass graft(s) with unstable angina pectoris