I70.602
BillableUnspecified atherosclerosis of nonbiological bypass graft(s) of the extremities, left leg
HCC Category Mapping
V24HCC 108 — Vascular Disease
0.297ESRDHCC 108 — Vascular Disease
0.000What This Code Means
Hardening of arteries in a surgically placed synthetic or other nonbiological bypass graft in the left leg.
Coding Tips
- •Ensure left leg laterality is explicitly stated in the medical record
- •Do not use if both legs are affected; refer to bilateral code I70.603
Clinical Significance
This code captures atherosclerosis of a nonbiological bypass graft without specification of the clinical manifestation (such as claudication, rest pain, ulceration, or gangrene). While this code indicates the presence of graft atherosclerosis, it lacks the specificity needed to fully convey disease severity. Coders should query the provider for more specific documentation whenever possible to ensure accurate risk stratification.
Documentation Requirements
- ✓Documentation of the type of bypass graft as nonbiological (must distinguish from autologous vein, nonautologous biological, or synthetic/nonbiological grafts)
- ✓Clinical evidence of atherosclerosis affecting the bypass graft (imaging, angiography, or clinical assessment)
- ✓Clinical findings supporting atherosclerosis of the bypass graft
- ✓Query provider for specific manifestation (claudication, rest pain, ulceration, or gangrene) to allow more precise coding
- ✓Clear documentation of laterality specifying the left leg
Commonly Confused Codes
I70.4xx — Autologous vein bypass graft codes; use when the graft is the patient's own harvested vein, not a synthetic materialI70.5xx — Nonautologous biological bypass graft codes; use when the graft is from donor or animal tissue, not synthetic materialI70.2xx — Native artery atherosclerosis codes; use when no bypass graft is present and disease is in the patient's own arteries
Code Hierarchy
└I70Atherosclerosis└I70.6Atherosclerosis of nonbiological bypass graft(s) of the extremities└I70.60Unspecified atherosclerosis of nonbiological bypass graft(s) of the extremities└I70.602Unspecified atherosclerosis of nonbiological bypass graft(s) of the extremities, left leg
└I70.602Unspecified atherosclerosis of nonbiological bypass graft(s) of the extremities, left leg