CPT® Code 0460T

Official Description

Repositioning of previously implanted aortic counterpulsation ventricular assist device; subcutaneous electrode

Common Language Description

The procedure described by CPT® Code 0460T involves the repositioning of a previously implanted aortic counterpulsation ventricular assist device, specifically focusing on the subcutaneous electrode. This device is utilized primarily in the management of acute cardiogenic shock or end-stage chronic heart failure, conditions that severely compromise the heart's ability to pump blood effectively. The aortic counterpulsation ventricular assist system is a sophisticated medical apparatus that includes a pneumatic pump, a console for operation, and electrocardiogram electrodes that synchronize the device's function with the patient's heartbeat. The pump is strategically placed in a subcutaneous pocket above the pectoralis muscle, allowing for a minimally invasive approach. The pneumatic drive line, which is essential for the device's operation, exits through the skin in the right upper abdomen and connects to the console, which drives the pump using pressurized air. An interposition vascular graft is surgically anastomosed to the subclavian artery, facilitating blood flow to the pump. Additionally, subcutaneous electrocardiogram electrodes are positioned on the chest wall and linked to the console, while mechano-electrical skin interface electrocardiogram leads are placed over various arteries, such as the radial artery at the wrist, the digital artery at the finger, or the posterior tibial artery at the ankle. This setup captures the heartbeat and ensures the pump operates in sync with the cardiac cycle. During the procedure, the pump fills with blood during ventricular systole, which reduces the workload of the left ventricle by decreasing afterload. Conversely, during ventricular diastole, the pump ejects blood, thereby enhancing cardiac output and improving both coronary and systemic blood flow. The repositioning process itself involves making an incision to access the pump, subclavian artery, and vascular graft, ensuring that the device is correctly placed within the existing subcutaneous pocket. The vascular graft is inspected for any signs of bleeding, and the pneumatic drive tubing is checked for kinks that could impede function. After repositioning, the subcutaneous electrodes are also adjusted and tested to confirm they adequately capture the heartbeat. Finally, the incisions are closed with sutures, completing the procedure.

1. Indications

The procedure described by CPT® Code 0460T is indicated for patients experiencing acute cardiogenic shock or end-stage chronic heart failure. These conditions necessitate the use of an aortic counterpulsation ventricular assist device to support cardiac function and improve hemodynamics.

Acute Cardiogenic Shock A critical condition where the heart suddenly cannot pump enough blood to meet the body's needs, often requiring mechanical support.
End-Stage Chronic Heart Failure A severe form of heart failure where the heart's ability to function is significantly compromised, necessitating advanced therapeutic interventions.

2. Procedure

The procedure for repositioning the aortic counterpulsation ventricular assist device involves several critical steps to ensure proper placement and functionality of the device.

Step 1: Incision An incision is made in the skin to access the previously implanted device. This incision is carefully carried down to expose the pump, subclavian artery, and vascular graft, allowing the surgeon to work effectively on the device.
Step 2: Device Repositioning The aortic counterpulsation ventricular assist device is then repositioned within the existing subcutaneous pocket. This step is crucial to ensure that the device remains in the optimal location for effective operation.
Step 3: Vascular Graft Inspection After repositioning the device, the vascular graft is thoroughly checked for any signs of bleeding. This inspection is vital to prevent complications that could arise from inadequate hemostasis.
Step 4: Pneumatic Drive Tubing Check The pneumatic drive tubing is examined for kinking, which could hinder the device's performance. Ensuring that the tubing is free from obstructions is essential for the proper functioning of the pump.
Step 5: Electrode Repositioning The subcutaneous electrocardiogram electrodes are repositioned and tested to ensure they adequately capture the heartbeat. This step is critical for the synchronization of the device with the patient's cardiac rhythm.
Step 6: Closure Finally, the incisions made during the procedure are closed with sutures, completing the repositioning process and ensuring the integrity of the surgical site.

3. Post-Procedure

Post-procedure care involves monitoring the patient for any complications related to the repositioning of the aortic counterpulsation ventricular assist device. This includes observing for signs of bleeding at the incision site, ensuring the device is functioning correctly, and confirming that the electrocardiogram electrodes are capturing the heartbeat effectively. Patients may require follow-up imaging or assessments to evaluate the position and performance of the device. Additionally, instructions regarding activity restrictions and signs of potential complications should be provided to the patient to ensure a smooth recovery process.

Short Descr	REPOS AORTIC VENTR DEV ELTRD
Medium Descr	REPOS AORTIC VENTR DEV SUBCUTANEOUS ELECTRODE
Long Descr	Repositioning of previously implanted aortic counterpulsation ventricular assist device; subcutaneous electrode
Status Code	Carriers Price the Code
Global Days	YYY - Carrier Determines Whether Global Concept Applies
PC/TC Indicator (26, TC)	9 - Not Applicable
Multiple Procedures (51)	9 - Concept does not apply.
Bilateral Surgery (50)	9 - Concept does not apply.
Physician Supervisions	09 - Concept does not apply.
Assistant Surgeon (80, 82)	9 - Concept does not apply.
Co-Surgeons (62)	9 - Concept does not apply.
Team Surgery (66)	9 - Concept does not apply.
Diagnostic Imaging Family	99 - Concept Does Not Apply
APC Status Indicator	Procedure or Service, Multiple Reduction Applies
Berenson-Eggers TOS (BETOS)	P5E - Ambulatory procedures - other
MUE	Not applicable/unspecified.