Aneurysm of artery of lower extremity

This code signifies an abnormal, localized dilation or ballooning of an artery located in the leg, thigh, or foot. This weakening of the arterial wall can lead to rupture, thrombosis, or embolization, potentially causing significant morbidity.

Apply this code when documentation explicitly states an aneurysm affecting any artery of the lower limb, such as the femoral, popliteal, or tibial arteries. Supporting documentation includes diagnostic imaging reports (e.g., ultrasound, CTA, MRA) confirming the presence and location of the aneurysm.

• Differentiate from pseudoaneurysms, which are contained hematomas outside the arterial wall.
• Specify laterality (left, right, bilateral) if documented, though ICD-9-CM does not provide laterality for this specific code.
• Ensure documentation clearly identifies the lower extremity artery involved; avoid using for aneurysms in other arterial systems.