Athscl type of bypass of the extrm w intrmt claud, oth extrm

This code describes the hardening and narrowing of a previously placed bypass graft in an extremity, leading to pain and cramping in the leg or arm that is exacerbated by exercise and relieved by rest. This specific code applies when the atherosclerosis affects a bypass graft other than an autologous vein or nonautologous biological bypass graft, and the claudication is present in an extremity other than the right or left.

Use this code when documentation confirms atherosclerosis within a bypass graft of an extremity, resulting in intermittent claudication. This diagnosis requires a clear statement of the affected extremity (e.g., "bilateral lower extremities" or "upper extremity") and the type of bypass graft if it falls into the "other" category. Supporting documentation includes vascular studies (e.g., angiography, duplex ultrasound) showing graft stenosis and a clinical history consistent with claudication.

• Ensure the documentation specifies "intermittent claudication" as the symptom, not just general extremity pain.
• Verify the type of bypass graft; this code is for "other type" grafts, not autologous vein or nonautologous biological grafts.
• Confirm the affected extremity is documented as "other" (e.g., bilateral, unspecified, or an upper extremity if not specified as right or left).