I70.0
BillableAtherosclerosis of aorta
HCC Category Mapping
V24HCC 108 — Vascular Disease
0.297ESRDHCC 108 — Vascular Disease
0.000What This Code Means
Buildup of fatty deposits and plaque in the aorta, the largest blood vessel in the body, which can reduce blood flow.
Coding Tips
- •Specify the location of atherosclerosis within the aorta if documented (thoracic, abdominal, or thoracoabdominal)
- •Document any associated conditions such as aortic aneurysm or dissection, as these may require additional codes
Clinical Significance
Atherosclerosis of the aorta indicates systemic arterial disease affecting the body's largest artery, reflecting widespread cardiovascular risk and potential for life-threatening complications including aortic aneurysm, dissection, and atheroembolism. This diagnosis is a strong indicator of diffuse atherosclerotic disease and is associated with concurrent coronary artery disease, cerebrovascular disease, and peripheral arterial disease. Its presence signals the need for aggressive cardiovascular risk factor management and close monitoring for progressive vascular complications.
Documentation Requirements
- ✓Documentation of the specific arterial site affected by atherosclerosis
- ✓Imaging or diagnostic evidence confirming aortic atherosclerosis (computed tomography angiography, magnetic resonance angiography, or ultrasound findings)
- ✓Assessment of aortic dimensions and any aneurysmal changes
- ✓Documentation of associated cardiovascular risk factors and comorbidities
- ✓Treatment plan addressing atherosclerotic disease management (lipid-lowering therapy, antiplatelet agents, blood pressure control)
Commonly Confused Codes
I70.1 — Atherosclerosis of renal artery; use when atherosclerosis specifically involves the renal arteries rather than the aortaI70.2x — Atherosclerosis of native arteries of extremities; use when peripheral arterial disease involves limb arteries, not the aortaI71.x — Aortic aneurysm and dissection; use when the aorta has aneurysmal dilation or dissection, not just atherosclerotic plaqueI25.10 — Atherosclerotic heart disease of native coronary artery without angina; use when atherosclerosis involves the coronary arteries