Oth athscl nonbiol bypass of the extremities, bilateral legs

This code signifies the presence of atherosclerosis affecting nonbiological bypass grafts in both lower extremities. This condition involves the hardening and narrowing of these synthetic grafts due to plaque buildup, impairing blood flow to the legs. It represents a complication of prior revascularization surgery using artificial conduits.

Use this code when documentation explicitly states atherosclerosis of nonbiological bypass grafts in both legs. This typically applies to patients with peripheral artery disease (PAD) who have undergone bypass surgery using synthetic grafts (e.g., PTFE, Dacron) and subsequently developed graft stenosis or occlusion due to atherosclerotic changes. Supporting documentation should include imaging reports (e.g., angiogram, duplex ultrasound) confirming the location and nature of the atherosclerosis.

• Differentiate between nonbiological (synthetic) and biological (autogenous vein) grafts; this code is specific to nonbiological.
• Ensure documentation specifies "bilateral legs" to support the bilateral designation of this code.
• Consider sequencing this code after the underlying peripheral artery disease (e.g., I70.2- series) if it's the primary reason for the encounter.