Embolism and thrombosis of arteries of the lower extremities

This code describes the blockage of arterial blood flow in the lower limbs due to an embolus (a traveling clot or foreign body) or a thrombus (a clot formed in situ). This condition can lead to ischemia, pain, and potentially tissue necrosis if not promptly addressed.

Use this code when documentation specifies an acute or chronic arterial occlusion in the lower extremities caused by an embolism or thrombosis. Supporting documentation includes physician notes detailing the etiology (embolic vs. thrombotic), location (e.g., femoral, popliteal, tibial artery), and clinical findings consistent with arterial insufficiency.

• Differentiate between embolism/thrombosis and atherosclerosis with thrombosis, which has a distinct code category.
• Specify laterality (right, left, bilateral) if documented, using the appropriate subcategory.
• Ensure documentation clearly states the arterial involvement in the lower extremity to avoid confusion with venous thrombosis.