Atheroembolism of right lower extremity

This code signifies the presence of an atheroembolism affecting the right lower extremity. This condition occurs when cholesterol crystals or other atherosclerotic debris break off from a plaque, typically in a larger artery, and travel downstream to occlude smaller arteries in the right leg, leading to ischemia.

Apply this code when documentation clearly indicates an atheroembolic event specifically impacting the right lower extremity. This is often seen in patients with severe atherosclerosis, particularly after invasive vascular procedures or spontaneously. Supporting documentation includes physician notes describing "cholesterol embolism," "blue toe syndrome" in the right foot, or evidence of microemboli in the right leg vasculature.

• Differentiate from other types of embolisms (e.g., cardiac, thrombotic) which have distinct codes.
• Ensure the laterality (right lower extremity) is explicitly documented to support this specific code.
• Consider co-reporting codes for underlying atherosclerosis (e.g., I70.2- series) if documented and relevant.