CPT® Code 0459T

Official Description

Relocation of skin pocket with replacement of implanted aortic counterpulsation ventricular assist device, mechano-electrical skin interface and electrodes

Common Language Description

The procedure described by CPT® Code 0459T involves the relocation of a skin pocket associated with an implanted aortic counterpulsation ventricular assist device. This device is a sophisticated medical apparatus designed to support patients with severe heart conditions, such as acute cardiogenic shock or end-stage chronic heart failure. The aortic counterpulsation system comprises several key components, including a pneumatic pump, a console that operates the pump using pressurized air, and electrocardiogram electrodes that synchronize the device's function with the patient's heartbeat. The pump is strategically placed within a subcutaneous pocket located above the pectoralis muscle, allowing for optimal positioning and function. The pneumatic drive line, which is essential for the operation of the pump, exits through the skin in the right upper abdomen and connects to the console, facilitating the necessary communication and power supply. An interposition vascular graft is surgically anastomosed to the subclavian artery, ensuring that the pump receives adequate blood flow. Additionally, subcutaneous electrocardiogram electrodes are positioned on the chest wall and linked to the console, while mechano-electrical skin interface 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. These leads are crucial for capturing the heartbeat and ensuring 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 relocation of the device involves making an incision to access the pump, subclavian artery, and vascular graft, followed by the creation of a new pocket in the subcutaneous tissue for the device. The surgical team meticulously checks the vascular graft for any signs of bleeding and ensures that the pneumatic drive tubing is free from kinks. Finally, the positioning of the mechano-electrical skin interface and subcutaneous electrodes is verified to ensure they adequately capture the heartbeat before the incisions are closed with sutures.

1. Indications

The procedure associated with CPT® Code 0459T is indicated for patients experiencing severe heart conditions that necessitate the use of an aortic counterpulsation ventricular assist device. The specific indications include:

Acute Cardiogenic Shock - A critical condition where the heart suddenly cannot pump enough blood to meet the body's needs, often requiring immediate intervention.
End-Stage Chronic Heart Failure - A progressive condition where the heart's ability to pump blood is severely compromised, leading to significant symptoms and reduced quality of life.

2. Procedure

The procedure for relocating the skin pocket with the implanted aortic counterpulsation ventricular assist device involves several detailed steps:

Step 1: Incision and Exposure - The procedure begins with the surgeon making an incision in the skin to access the existing pump, subclavian artery, and vascular graft. This incision is carefully carried down to ensure that all necessary structures are adequately exposed for the subsequent steps.
Step 2: Creation of New Pocket - Once the pump and associated structures are exposed, a new pocket is fashioned in the subcutaneous tissue. This new location is selected to optimize the positioning of the device for both functionality and patient comfort.
Step 3: Device Relocation - The implanted aortic counterpulsation ventricular assist device is then moved to the newly created pocket. This step requires precision to ensure that the device is properly positioned and secured within the new site.
Step 4: Vascular Graft Inspection - After relocating the device, the vascular graft is thoroughly checked for any signs of bleeding. This is a critical step to prevent postoperative complications and ensure the integrity of the graft connection to the subclavian artery.
Step 5: Pneumatic Drive Tubing Check - The pneumatic drive tubing, which is essential for the operation of the pump, is inspected for kinking or any obstructions that could impair the device's function.
Step 6: Electrode Position Verification - The mechano-electrical skin interface and subcutaneous electrodes are checked to confirm their proper positioning and ensure they adequately capture the heartbeat. This verification is crucial for the synchronization of the pump with the patient's cardiac cycle.
Step 7: Closure of Incisions - Finally, the incisions made during the procedure are closed with sutures, ensuring that the surgical site is secure and promoting optimal healing.

3. Post-Procedure

Post-procedure care involves monitoring the patient for any complications related to the surgery, particularly concerning the vascular graft and the positioning of the aortic counterpulsation device. Patients may require follow-up imaging or assessments to ensure that the device is functioning correctly and that there are no issues with blood flow or device synchronization. Additionally, the surgical site should be monitored for signs of infection or improper healing. Patients will typically receive instructions on activity restrictions and signs to watch for that may indicate complications, ensuring a safe recovery process.

Short Descr	RELOCAJ RPLCMT AORTIC VENTR
Medium Descr	RELOCAJ RPLCMT AORTIC VENTR MECHANO-ELECTRODE
Long Descr	Relocation of skin pocket with replacement of implanted aortic counterpulsation ventricular assist device, mechano-electrical skin interface and electrodes
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	Inpatient Procedures, not paid under OPPS
Berenson-Eggers TOS (BETOS)	P5E - Ambulatory procedures - other
MUE	Not applicable/unspecified.