Athscl unsp type bypass of the right leg w ulcer of calf

This code signifies the presence of atherosclerosis affecting a bypass graft in the right leg, where the specific type of graft (e.g., femoropopliteal, femorodistal) is not documented. A key feature is the development of an ulceration on the calf as a complication of this graft disease. This indicates a severe manifestation of peripheral artery disease impacting a previously revascularized limb.

Apply this code when documentation clearly states atherosclerosis of an unspecified bypass graft in the right leg, accompanied by an ulcer on the calf. This typically occurs in patients with a history of lower extremity revascularization who present with ischemic skin breakdown. Supporting documentation would include operative reports detailing the bypass, vascular studies confirming graft disease, and physician notes describing the calf ulcer.

• Ensure the documentation specifies "right leg" and "calf ulceration" for accurate assignment.
• Do not use if the type of bypass graft is specified; instead, select a more specific I70.3 category code.
• Sequence this code first if the ulceration is the primary reason for the encounter, followed by codes for associated conditions like diabetes if applicable.