© Copyright 2026 American Medical Association. All rights reserved.
The CPT® Code 34826 refers to the placement of a proximal or distal extension prosthesis specifically for the endovascular repair of infrarenal abdominal aortic or iliac aneurysms, false aneurysms, or dissections. In simpler terms, this procedure involves the insertion of an additional prosthetic device into the aorta or iliac artery when the primary endograft component is insufficient in length to adequately address the vascular issue. This situation often arises when an endoleak, which is a complication where blood leaks into the aneurysm sac, is detected during the initial endograft repair. The extension prosthesis serves to effectively seal off the endoleak, ensuring that blood flow is redirected appropriately and the risk of further complications is minimized. The procedure can be performed either during the same surgical session as the initial repair or in a subsequent session if the endoleak is identified postoperatively. The placement of the extension prosthesis is guided by fluoroscopic imaging to ensure accurate positioning, followed by deployment using a balloon catheter to secure the prosthesis in place. This code is used in conjunction with CPT® Code 34825, which is designated for the placement of an extension prosthesis in the primary vessel, while 34826 is specifically for each additional vessel that requires treatment.
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