Athscl autol vein bypass of the extrm w rest pain, left leg

This code signifies the hardening and narrowing of an autologous vein graft (a blood vessel taken from the patient's own body) that was surgically implanted to bypass an obstructed artery in the left leg. The patient is experiencing rest pain, indicating severe ischemia in the affected limb.

Use this code when documentation confirms atherosclerosis has developed within a previously placed autologous vein bypass graft in the left leg, and the patient's primary symptom is pain at rest. This typically occurs in patients with advanced peripheral artery disease (PAD) who have undergone revascularization.

• Ensure the documentation specifies "autologous vein" graft and not a synthetic or other type of graft.
• Verify the laterality is explicitly stated as "left leg" and that "rest pain" is present.
• Sequence this code as a primary diagnosis when the atherosclerosis of the graft with rest pain is the reason for the encounter.