CPT® Code 35481

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1. Indications

The procedure described by CPT® Code 35481 is indicated for patients experiencing significant arterial occlusion in the aorta, which may lead to compromised blood flow. The following conditions may warrant the performance of this procedure:

• Aortic Occlusion - The presence of plaque buildup in the aorta that restricts blood flow, potentially leading to ischemia or other complications.
• Peripheral Artery Disease - Patients with atherosclerosis affecting the aorta may require intervention to restore adequate blood circulation.
• Symptoms of Ischemia - Patients presenting with symptoms such as claudication, pain, or other signs of reduced blood flow due to aortic obstruction.

2. Procedure

The procedure for CPT® Code 35481 involves several critical steps to ensure effective removal of plaque from the aorta:

• Step 1: Preparation and Incision - The skin over the access artery is thoroughly prepped to maintain a sterile environment. An incision is made to expose the artery, allowing for direct access to the vascular system.
• Step 2: Artery Exposure and Sheath Placement - Once the artery is exposed, a small nick is made in the artery to facilitate the placement of a sheath. This sheath serves as a conduit for the subsequent instruments used in the procedure.
• Step 3: Guidewire Insertion - A guidewire is inserted through the sheath and advanced from the access artery to the occluded section of the aorta. This guidewire is crucial for navigating the vascular system and positioning the atherectomy catheter accurately.
• Step 4: Atherectomy Catheter Advancement - The atherectomy catheter is then advanced over the guidewire. Once in position, the guidewire is withdrawn, allowing the atherectomy device to operate directly on the arterial wall.
• Step 5: Plaque Removal - The atherectomy device utilizes a specialized balloon catheter with a cutting piston that shaves plaque from the arterial wall. As the plaque is removed, it is collected in the device for extraction upon completion of the procedure.
• Step 6: Multiple Passes - The physician may perform several passes with the atherectomy device to ensure that all significant plaque is removed, optimizing the patency of the artery.
• Step 7: Angiography Catheter Insertion - After the atherectomy, the atherectomy device is exchanged for a guidewire, and an angiography catheter is advanced over the guidewire to assess the results of the procedure.
• Step 8: Completion Angiography - Contrast material is injected through the angiography catheter, and a completion angiography is performed to confirm that the aorta is patent and blood flow is restored.
• Step 9: Closure - Following the completion angiography, the angiography catheter is withdrawn, and the access artery is repaired. The skin incision is then closed, concluding the procedure.

3. Post-Procedure

Post-procedure care for patients undergoing CPT® Code 35481 typically includes monitoring for any complications, such as bleeding or infection at the incision site. Patients may be observed for signs of improved blood flow and symptom relief. Follow-up imaging may be necessary to ensure the aorta remains patent. Additionally, patients may receive instructions regarding activity restrictions and medication management to support recovery and prevent future arterial occlusions.