Athscl type of bypass of extrm w intrmt claud, unsp extrm

This code signifies the hardening and narrowing of an existing 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 atherosclerosis specifically affects a bypass graft that was surgically placed to reroute blood flow around a blocked artery, and the specific type of bypass graft is not documented. The intermittent claudication indicates symptomatic arterial insufficiency in the affected limb.

Use this code when documentation confirms atherosclerosis within an unspecified type of bypass graft in an extremity, and the patient experiences intermittent claudication. This code is appropriate when the medical record clearly states "atherosclerosis of bypass graft" and "intermittent claudication," but does not specify the type of graft (e.g., autologous vein, prosthetic).

• Ensure documentation specifies "intermittent claudication" as the symptom; if rest pain or tissue loss is present, a different code for critical limb ischemia may be more appropriate.
• Verify that the atherosclerosis is within a bypass graft and not the native artery; codes for native artery atherosclerosis are distinct.
• If the type of bypass graft (e.g., autologous vein, prosthetic) is documented, a more specific code within the I70.7- series should be used.