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Total Artificial Hearts and Implantable Ventricular Assist Devices
Policy Number: MP-033
Latest Review Date: September 2024
Category: Surgery
POLICY:
Effective for dates of service on or after 10/04/2021:
Destination Therapy
VAD- Adult
Implantable VADs with FDA approval or clearance may be considered medically necessary as destination therapy with end-stage heart failure adult individuals who meet the following criteria:
- New York Heart Association (NYHA) Class III heart failure with mild dyspnea upon physical activity or NYHA Class IV;
- Left ventricular ejection fraction ≤ 25%;
- Inotrope-dependent; OR cardiac index <2.2 liters/min/m2, while not on inotropes and also meeting one of the following:
- On optimal medical management, based on current heart failure practice guidelines for at least 45 of the last 60 days and are failing to respond OR
- Advanced heart failure for at least 14 days and dependent on intra-aortic balloon pump for ≥7 days.
Bridge to Transplantation
Ventricular Assist Devices
Implantable ventricular assist devices (VADs) with U.S. Food and Drug Administration (FDA) approval or clearance may be considered medically necessary as a bridge to heart transplantation for individuals who meet one of the following criteria:
- Currently listed as heart transplantation candidates and not expected to survive until a donor heart can be obtained, OR
- The individual is undergoing evaluation to determine candidacy for heart transplantation.
Postcardiotomy Setting/Bridge to Recovery
Implantable VADs with FDA approval or clearance may be considered medically necessary in the postcardiotomy setting in individuals who are unable to be weaned off cardiopulmonary bypass.
Bridge to Transplantation
Total Artificial Heart
Total artificial hearts with FDA-approved devices meet medical criteria for coverage when performed in a Medicare-approved heart transplant facility as a bridge to heart transplantation when ALL the following criteria are met:
- Biventricular failure AND,
- No other reasonable medical or surgical treatment options; and
- Are ineligible for other univentricular or biventricular support devices; and
- Are currently listed as heart transplantation candidates
OR
- Are undergoing evaluation to determine candidacy for heart transplantation; and
- Are not expected to survive until a donor heart can be obtained.
*Pediatric- VAD
Pediatric ventricular assist devices with FDA-approval may be considered medically necessary when both of the following criteria are met:
- Child has documented NYHA Class IV end-stage (i.e., left ventricular) heart failure refractory to medical therapy; AND
- An age and size-appropriate VAD will be used until a donor heart can be obtained*
*Note: See Approved By Governing Bodies section of policy for listing of FDA approved devices.
Right Ventricular Assist Devices
FDA-approved right ventricular assist devices (RVADs; e.g., The Thoratec® CentriMag® Blood Pump) is considered medically necessary for temporary circulatory support in accordance with the FDA’s Humanitarian Device Exemption (HDE) requirements when the following criteria are met:
- Device is used for up to 30 days for an individual in cardiogenic shock due to acute right ventricular failure and the individual is willing and able to be treated with heparin or an appropriate alternative anticoagulation; OR
- For use for up to 6 hours to provide hemodynamic stabilization for an individual in need of cardiopulmonary support.
Percutaneous Ventricular Assist Devices
Percutaneous ventricular assist devices (pVAD) with FDA approval or clearance meet medical criteria for coverage for use in individuals undergoing high-risk percutaneous coronary intervention (PCI) when ALL the following are met:
- Individual has LVEF of less than 35% AND;
- Will undergo PCI on an unprotected left main coronary artery or last patent coronary conduit.
Other Indications
Other applications of implantable ventricular assist devices (VADs) or total artificial hearts (TAHs) are considered investigational, including, but not limited to, the use of TAHs as destination therapy.
Ventricular assist devices and percutaneous ventricular assist devices are considered investigational for all other indications.
Use of a non-FDA approved ventricular assist device is considered investigational.
Implantable Aortic Counterpulsation Ventricular Assist Devices (e.g., the NuPulseCV iVAS and the Symphony Heart Assist System) A permanently implantable aortic counterpulsation VAD for any indication is investigational.
POLICY GUIDELINES:
The intent of treatment may evolve over the course of treatment; for example, there is not necessarily a strict delineation between bridge to transplant and destination therapy.
Some ventricular assist devices (VADs) have approval from the U.S. Food and Drug Administration (FDA) for the pediatric population. The DeBakey VAD Child device and the Berlin Heart EXCOR Pediatric VAD have FDA approval through the humanitarian device exemption process. The DeBakey VAD is indicated for use in children ages 5 to 16 years who are awaiting a heart transplant (i.e., a bridge to transplant) while the Berlin Heart EXCOR VAD is indicated for children with severe isolated left ventricular or biventricular dysfunction who are candidates for cardiac transplant and require circulatory support. The HeartMate3TM received approval for expanded approval for pediatric individuals with advanced refractory left ventricular heart failure in 2020.
In general, candidates for bridge to transplant implantable VADs are those who are considered appropriate heart transplant candidates but who are unlikely to survive the waiting period until a human heart donor is available. Some studies have included the following hemodynamic selection criteria: either a left atrial pressure of 20 mm Hg or a cardiac index of less than 2.0 L/min/m while receiving maximal medical support. Individuals with VADs are classified by the United Network for Organ Sharing as status I (i.e., persons who are most ill and are considered the highest priority for transplant).
The median duration for time on the device is between 20 and 120 days.
Contraindications for bridge to transplant VADs and total artificial hearts include conditions that would generally exclude individuals for heart transplant. Such conditions are chronic irreversible hepatic, renal, or respiratory failure; systemic infection; coagulation disorders, and inadequate psychosocial support. Due to potential problems with adequate function of the VAD or total artificial heart, implantation is also contraindicated in individuals with uncorrected valvular disease.
The Centers for Medicare and Medicaid Services requires that “Beneficiaries receiving a VAD must be managed by an explicitly identified, cohesive, multidisciplinary team of medical professionals with appropriate qualifications, training, and experience. The team embodies collaboration and dedication across medical specialties to offer optimal patient-centered care. Collectively, the team must ensure that individuals and caregivers have the knowledge and support necessary to participate in informed decision making. The team members must be based at the facility and must include individuals with experience working with individuals before and after placement of a VAD.
The team must include, at a minimum:
- At least 1 physician with cardiothoracic surgery privileges and individual experience implanting at least 10 durable, intracorporeal, left ventricular assist devices over the course of the previous 36 months with activity in the last year.
- At least 1 cardiologist trained in advanced heart failure with clinical competence in medical- and device-based management including VADs, and clinical competence in the management of individuals before and after placement of a VAD.
- A VAD program coordinator.
- A social worker.
- A palliative care specialist.”
See Medical Policy #390- Heart Transplant and Combined Heart-Kidney Transplantation for further discussion of heart transplant candidacy.
Effective for dates of service on or after May 29, 2021 through October 3, 2021:
Bridge to Recovery
Ventricular assist devices with FDA approval or clearance may be considered medically necessary in individuals in the post-cardiotomy setting who are unable to be weaned off cardiopulmonary bypass.
*Pediatric- VAD
Pediatric ventricular assist devices with FDA-approval may be considered medically necessary when both of the following criteria are met:
- Child has documented NYHA Class IV end-stage (i.e., left ventricular) heart failure refractory to medical therapy; AND
- An age and size-appropriate VAD will be used until a donor heart can be obtained*
*Note: See Approved By Governing Bodies section of policy for listing of FDA approved devices.
VAD- Adult
Ventricular assist devices with FDA approval or clearance meet medical criteria for coverage for short-term (e.g., bridge-to-recovery and bridge-to-transplant) or long-term (e.g., destination therapy) mechanical circulatory support for heart failure individuals who meet the following criteria:
- New York Heart Association (NYHA) Class IV heart failure not responding to optimal medical management for at least 60 days,
OR
- NYHA Class III/IV for at least 28 days and received ≥ 7 days support with an intra-aortic balloon pump,
or
- NYHA Class III/IV for at least 28 days and dependent on intravenous (IV) inotropic agents, with two failed weaning attempts; AND
- Proven functional limitation with a peak oxygen consumption of less than or equal to 14 ml/kg/min. (Note: This measure may be waived in persons who are balloon pump or intravenous inotrope dependent or are otherwise unable to tolerate exercise stress testing); and
- Left ventricular ejection fraction (LVEF) < 25%; and
Individuals must not be candidates for human heart transplant for one or more of the following reasons:
- Age > 65 years; OR
- Insulin-dependent diabetes mellitus with end-organ damage; or
- Chronic renal failure with serum creatinine > 2.5 mg/dl for ≥ 90 days; or
- Other clinically significant condition.
FDA-approved right ventricular assist devices (RVADs; e.g., The Thoratec® CentriMag® Blood Pump) is considered medically necessary for temporary circulatory support in accordance with the FDA’s Humanitarian Device Exemption (HDE) requirements when the following criteria are met:
- Device is used for up to 30 days for an individual in cardiogenic shock due to acute right ventricular failure and the individual is willing and able to be treated with heparin or an appropriate alternative anticoagulation; OR
- For use for up to 6 hours to provide hemodynamic stabilization for an individual in need of cardiopulmonary support.
Percutaneous ventricular assist devices (pVAD) with FDA approval or clearance meet medical criteria for coverage for use in individuals undergoing high-risk percutaneous coronary intervention (PCI) when ALL of the following are met:
- LVEF of less than 35% AND;
- Will undergo PCI on an unprotected left main coronary artery or last patent coronary conduit.
Bridge to Transplantation
TAH
Total artificial hearts with FDA-approved devices meet medical criteria for coverage when performed in a Medicare-approved heart transplant facility as a bridge to heart transplantation when ALL of the following criteria are met:
- Biventricular failure AND,
- No other reasonable medical or surgical treatment options; and
- Are ineligible for other univentricular or biventricular support devices; and
- Are currently listed as heart transplantation candidates
OR
- Are undergoing evaluation to determine candidacy for heart transplantation; and
- Are not expected to survive until a donor heart can be obtained.
Other Indications
Total artificial hearts including, but not limited to, the use of total artificial hearts as destination therapy is considered investigational for all other indications.
Ventricular assist devices and percutaneous ventricular assist devices are considered investigational for all other indications.
Use of a non-FDA approved ventricular assist device is considered investigational.
Implantable Aortic Counterpulsation Ventricular Assist Devices (e.g., the NuPulseCV iVAS and the Symphony Heart Assist System) A permanently implantable aortic counterpulsation VAD for any indication is investigational.
POLICY GUIDELINES:
Only two ventricular assist devices (VADs) have approval from the U.S. Food and Drug Administration (FDA) for the pediatric population. The DeBakey VAD Child device and the Berlin Heart EXCOR Pediatric VAD have FDA approval through the humanitarian device exemption process. The DeBakey VAD is indicated for use in children ages 5 to 16 years who are awaiting a heart transplant (i.e., a bridge to transplant) while the Berlin Heart EXCOR VAD is indicated for children with severe isolated left ventricular or biventricular dysfunction who are candidates for cardiac transplant and require circulatory support.
In general, candidates for bridge to transplant implantable VADs are those who are considered appropriate heart transplant candidates but who are unlikely to survive the waiting period until a human heart donor is available. Some studies have included the following hemodynamic selection criteria: either a left atrial pressure of 20 mm Hg or a cardiac index of less than 2.0 L/min/m2 while receiving maximal medical support. The United Network classifies individuals with VADs for Organ Sharing as status I (i.e., persons who are most ill and are considered the highest priority for transplant).
The median duration for time on the device is between 20 days and 120 days.
Contraindications for bridge to transplant VADs and total artificial hearts include conditions that would generally exclude individuals for heart transplant. Such conditions are chronic irreversible hepatic, renal, or respiratory failure; systemic infection; coagulation disorders, and inadequate psychosocial support. Due to potential problems with adequate function of the VAD or total artificial heart, implantation is also contraindicated in individuals with uncorrected valvular disease.
See Medical Policy #390- Heart Transplant and Combined Heart-Kidney Transplantation for further discussion of heart transplant candidacy.
In addition, individuals must have sufficient space in the thorax and/or abdominal cavity for the device. In the case of the CardioWest Temporary Total Artificial Heart, this excludes individuals with body surface areas less than 1.7 m2 or who have a distance between the sternum and 10th anterior rib of less than 10 cm, as measured by computed tomography scan.
DESCRIPTION OF PROCEDURE OR SERVICE:
According to a 2024 report from the American Heart Association and based on data collected from 2017 to 2020, roughly 6.7 million Americans ages 20 years or older had heart failure during that time frame. Prevalence of heart failure is projected to affect more than 8 million people 18 years of age and older by the year 2030. Between 2015 and 2018, the prevalence of heart failure was highest in non-Hispanic Black males. Based on data from the Multi-Ethnic Study of Atherosclerosis (MESA), in those without baseline cardiovascular disease, Black individuals had the highest risk of developing heart failure (4.6 per 1000 person-years), followed by Hispanic (3.5 per 1000 person-years), White (2.4 per 1000 person-years), and Chinese individuals (1.0 per 1000 person-years). Similar findings were demonstrated in the Atherosclerosis Risk in Communities (ARIC) Community Surveillance data, in which Black men and women had the highest burden of new-onset heart failure cases and the highest-age adjusted 30-day case fatality rate in comparison to White men and women. Higher risk reflected differential prevalence of hypertension, diabetes, and low socio-economic status.
Mechanical devices to assist or replace a failing heart have been developed over many decades of research. A ventricular assist device (VAD) is a mechanical support, attached to the native heart and vessels to augment cardiac output. The total artificial heart (TAH) replaces the native ventricles and is attached to the pulmonary artery and aorta; the native heart is typically removed. Both the VAD and TAH may be used as a bridge to heart transplantation or as destination therapy in those who are not candidates for transplantation. The VAD has also been used as a bridge to recovery in individuals with reversible conditions affecting cardiac output.
Heart Failure
Heart failure may be the consequence of a number of differing etiologies, including ischemic heart disease, cardiomyopathy, congenital heart defects, or rejection of a heart transplant. The reduction of cardiac output is considered to be severe when systemic circulation cannot meet the body’s needs under minimal exertion. Heart transplantation improves quality of life and had a reported survival rates at of nearly 92% for transplants performed in 2022. The number of candidates for transplants exceeds the supply of donor organs; thus the interest in the development of mechanical devices.
Treatment
Ventricular Assist Devices (VAD)
Implantable ventricular assist devices are attached to the native heart, which may have enough residual activity to withstand a device failure in the short term. In reversible conditions of heart failure, the native heart may regain some function, and weaning and explanting of the mechanical support system after months of use has been described. Ventricular assist devices can be classified as internal or external, electrically or pneumatically powered, and pulsatile or continuous flow. Initial devices were pulsatile, mimicking the action of a beating heart. Devices that are more recent may utilize a pump, which provides continuous flow. Continuous devices may move blood in rotary or axial flow.
At least one VAD system has been developed that is miniaturized and generates an artificial pulse, the HeartMate III™ LVAD (St. Jude Medical, Pleasanton, California). The HeartMate® III™ was FDA approved August 23, 2017.
Surgically implanted ventricular assist devices represent a method of providing mechanical circulatory support for individuals not expected to survive until a donor heart becomes available for transplant or for whom transplantation is otherwise contraindicated or unavailable. They are most commonly used to support the left ventricle, but right ventricular and biventricular devices may be used. The device is larger than most native hearts, and therefore the size of the individual is an important consideration: the pump may be implanted in the thorax or abdomen or remain external to the body. Inflow to the device is attached to the apex of the failed ventricle, while outflow is attached to the corresponding great artery (aorta for left ventricle, pulmonary artery for right ventricle). A small portion of ventricular wall is removed for insertion of the outflow tube; extensive cardiotomy affecting the ventricular wall may preclude VAD use.
Total Artificial Heart (TAH)
The total artificial heart is a biventricular device that completely replaces the function of the diseased heart. An internal battery required frequent recharging from an external power source. Many systems utilize a percutaneous power line, but a transcutaneous power-transfer coil allows for a system without lines traversing the skin, possibly reducing the risk of infection. Because the native heart must be removed, failure of the device is synonymous with cardiac death.
A fully bioprosthetic TAH, which is fully implanted in the pericardial sac and is electrohydrolically actuated, has been developed and tested in 2 individuals, but is currently experimental.
Percutaneous Ventricular Assist Devices (pVADs)
Devices in which the majority of the system’s components are external to the body are for short-term use (six hours to 14 days) only, due to the increased risk of infection and need for careful, in-hospital monitoring. Some circulatory assist devices are placed percutaneously, (i.e., are not implanted). These may be referred to as percutaneous VADs (pVADs). The pVADs are placed through the femoral artery. Two different pVADs have been developed, the TandemHeart™, and the Impella® device. In the TandemHeart™ system, a catheter is introduced through the femoral vein and passed into the left atrium via transseptal puncture. Oxygenated blood is then pumped from the left atrium into the arterial system via the femoral artery. The Impella® device is introduced through a femoral artery catheter. In this device, a small pump is contained within the catheter that is placed into the left ventricle. Blood is pumped from the left ventricle, through the device, and into the ascending aorta. Adverse events associated with pVAD include access site complications such as bleeding, aneurysms, or leg ischemia. Cardiovascular complications can also occur, such as perforation, myocardial infarction (MI), stroke, and arrhythmias.
Implantable Aortic Counter-Pulsation Ventricular Assist Systems
Implantable Aortic Counter-Pulsation Ventricular Assist Systems are inserted through the left or right subclavian artery and implanted into the aorta. The device inflates during diastole to reduce diastolic ventricular pressures without re-routing the blood flow. Cardiac rhythm is monitored using three subcutaneous electrodes that transmit cardiac electrical information to an implanted skin interface device. Implantable aortic counterpulsation ventricular assist systems decrease left ventricular afterload and improve left ventricular performance and contractility. Its function is comparable to that of the intra-aortic balloon pump (IABP). However, this device uses a permanently implanted balloon intended for long-term use, while the IABP is a short-term solution to stabilize the patient and is usually removed within 48 hours. Currently, this device is in clinical trials to evaluate its use as a bridge to transplant and recovery for acute and chronic heart failure individuals.
KEY POINTS:
The most recent literature search was performed for the period through June 24, 2024.
Summary of Evidence
Ventricular Assist Device
For individuals who have end-stage heart failure who receive a ventricular assist device (VAD) as a bridge to transplant, the evidence includes a randomized controlled trial (RCT), single-arm trials, and observational studies. Relevant outcomes are overall survival (OS), symptoms, functional outcomes, quality of life (QOL), and treatment-related mortality and morbidity. There is a substantial body of evidence from clinical trials and observational studies supporting implantable VADs as a bridge to transplant in individuals with end-stage heart failure, possibly reducing mortality as well as improving QOL. These studies have reported that substantial numbers of individuals have survived to transplant in situations in which survival would not be otherwise expected. The evidence is sufficient to determine that the technology results in an improvement in the net health outcome.
For individuals who have end-stage heart failure who receive a VAD as destination therapy, the evidence includes RCTs and multiple single-arm studies. Relevant outcomes are OS, symptoms, functional outcomes, QOL, and treatment-related mortality and morbidity. A well-designed trial with 2 years of follow-up data has demonstrated an advantage of implantable VADs as destination therapy for individuals ineligible for a heart transplant. Despite an increase in adverse events, both mortality and QOL appear to be improved for these individuals. A more recent trial comparing VADs has broader inclusion criteria and supports that criteria move away from use of transplant ineligibility, as treatment may evolve over the course of treatment. The evidence is sufficient to determine that the technology results in an improvement in the net health outcome.
Total Artificial Heart
For individuals who have end-stage heart failure who receive a total artificial heart (TAH) as a bridge to transplant, the evidence includes case series. Relevant outcomes are OS, symptoms, functional outcomes, QOL, and treatment-related mortality and morbidity. Compared with VADs, the evidence for TAHs in these settings is less robust. However, given the lack of medical or surgical options for these individuals and the evidence case series provide, TAH is likely to improve outcomes for a carefully selected population with end-stage biventricular heart failure awaiting transplant who are not appropriate candidates for a left VAD. The evidence is sufficient to determine that the technology results in an improvement in the net health outcome.
For individuals who have end-stage heart failure who receive a TAH as destination therapy, the evidence includes 2 case series. Relevant outcomes are OS, symptoms, functional outcomes, QOL, and treatment-related mortality and morbidity. The body of evidence for TAHs as destination therapy is too limited to draw conclusions. The evidence is insufficient to determine that the technology results in an improvement in the net health outcome.
Percutaneous Ventricular Assist Device
For individuals with cardiogenic shock who receive a percutaneous ventricular assist device (pVAD), the evidence includes RCTs, observational studies, and a systematic review. Relevant outcomes are OS, symptoms, morbid events, functional outcomes, QOL, and treatment-related mortality and morbidity. Four RCTs of pVAD versus intra-aortic balloon pump (IABP) for patients in cardiogenic shock failed to exhibit a mortality benefit and reported higher complication rates with pVAD use. Comparative observational studies and a long-term follow-up study were consistent with the RCT evidence. The evidence is insufficient to determine that the technology results in an improvement in the net health outcome.
For individuals who undergo high-risk cardiac procedures who receive a pVAD, the evidence includes RCTs, observational studies, and systematic reviews of these trials. Relevant outcomes are OS, symptoms, morbid events, functional outcomes, QOL, and treatment-related mortality and morbidity. Randomized controlled trials, controlled and uncontrolled observational studies, and systematic reviews of these studies have generally not demonstrated a benefit of pVAD used as ancillary support for individuals undergoing high-risk cardiac procedures. Additionally, two non-randomized studies have compared ventricular tachycardia (VT) ablation with pVAD or IABP. Both studies verified that individuals who had pVAD support spent less time in unstable VT than individuals without pVAD support. However, the current evidence does not support conclusions about the use of pVAD for VT ablation. The evidence is insufficient to determine that the technology results in an improvement in the net health outcome.
For individuals with cardiogenic shock refractory to intra-aortic balloon pump (IABP) therapy who receive a pVAD, the evidence includes case series. Relevant outcomes are OS, symptoms, morbid events, functional outcomes, QOL, and treatment-related mortality and morbidity. Case series of individuals with cardiogenic shock refractory to IABP have reported improved hemodynamic parameters following pVAD placement. However, these uncontrolled series do not provide evidence that pVADs improve mortality, and high rates of complications have been reported with pVAD use. The evidence is insufficient to determine that the technology results in an improvement in the net health outcome.
Implantable Aortic Counter-Pulsation Ventricular Assist Systems
For individuals with advanced heart failure who are treated with a permanently implantable aortic counterpulsation ventricular assist device the current data is limited in scope. There are scarce published, peer-reviewed scientific literature regarding its safety and effectiveness. This device is being studied for acute and chronic heart failure as a bridge to recovery. The current evidence is insufficient to determine the effects of the technology on health outcomes.
Practice Guidelines and Position Statements
American Association for Thoracic Surgery et al
In 2020, the American Association for Thoracic Surgery and the International Society for Heart and Lung Transplantation published guidelines on selected topics in mechanical circulatory support, including recommendations on the use of pVADs. The guideline authors noted, "Compared with IABP, contemporary percutaneous circulatory support devices provide a significant increase in cardiac index and mean arterial pressure; however, reported 30-day outcomes are similar."
Table 1. 2020 Guidelines on Mechanical Circulatory Support
Recommendation |
COE |
LOE |
"Percutaneous LV to aorta pumps of appropriate size should be considered for cardiogenic shock from primary LV failure." |
IIA |
B |
COE: class of evidence; LOE: level of evidence; LV: left ventricular.
American College of Cardiology Foundation et al
The American College of Cardiology Foundation, American Heart Association (AHA), and Heart Failure Society of American (2017) published a focused update of the 2013 recommendations released by the American College of Cardiology Foundation and AHA. Left ventricular assist device was one of several treatment options recommended for patients with refractory New York Heart Association class III or IV heart failure (stage D). If symptoms were not improved after guidelines directed management and therapy, which included pharmacologic therapy, surgical management and/or other devices, then left ventricular assist device would be an additional treatment option.
The 2017 update focused on changes in sections regarding biomarkers, comorbidities, and prevention of heart failure, while many of the previous recommendations remained unchanged. The American College of Cardiology Foundation and AHA (2013) released guidelines for the management of heart failure that included recommendations related to the use of mechanical circulatory support (MCS), including both durable and nondurable MCS devices. The guidelines categorized pVADs and extracorporeal ventricular assist devices (VADs) as nondurable MCS devices. Since the 2017 update, these guidelines have been updated regularly, with the most recent update occurring in 2022. Table 2 provides recommendations on MCS devices from the most recently updated guideline iteration.
Table 2. AHA/ACC/HFSA Guidelines on Mechanical Circulatory Support
Recommendation |
COEa |
LOEb |
"In select patients with advanced HFrEF with NYHA class IV symptoms who are deemed to be dependent on continuous intravenous inotropes or temporary MCS, durable LVAD implantation is effective to improve functional status, QOL, and survival." |
I |
A |
"In select patients with advanced HFrEF who have NYHA class IV symptoms despite GDMT, durable MCS can be beneficial to improve symptoms, improve functional class, and reduce mortality." |
IIA |
B-R |
"In patients with advanced HFrEF and hemodynamic compromise and shock, temporary MCS, including percutaneous and extracorporeal ventricular assist devices, are reasonable as a 'bridge to recovery' or 'bridge to decision” |
IIA |
B-NR
|
American Heart Association
In 2012, the AHA published recommendations for the use of MCS. These guidelines defined nondurable MCS as IABPs, extracorporeal membrane oxygenation, extracorporeal VADs, and pVADs. Table 3 lists recommendations made on indications for the use of MCS, including durable and nondurable devices.
Table 3. 2012 Guidelines on Mechanical Circulatory Support
Recommendation |
COE |
LOE |
"MCS for BTT indication should be considered for transplant-eligible patients with end-stage HF who are failing optimal medical, surgical, and/or device therapies and at high risk of dying before receiving a heart transplantation." |
I |
B |
"Implantation of MCS in patients before the development of advanced HF … is associated with better outcomes. Therefore, early referral of HF patients is reasonable." |
IIA |
B |
"MCS with a durable, implantable device for permanent therapy or DT is beneficial for patients with advanced HF, high 1-year mortality resulting from HF, and the absence of other life-limiting organ dysfunction; who are failing medical, surgical, and/or device therapies; and who are ineligible for heart transplantation." |
I |
B |
"Elective rather than urgent implantation of DT can be beneficial when performed after optimization of medical therapy in advanced HF patients who are failing medical, surgical, and/or device therapies." |
IIA |
C |
"Urgent nondurable MCS is reasonable in hemodynamically compromised HF patients with end-organ dysfunction and/or relative contraindications to heart transplantation/durable MCS that are expected to improve with time and restoration of an improved hemodynamic profile." "These patients should be referred to a center with expertise in the management of durable MCS and patients with advanced HF." |
IIA |
C |
"Patients who are ineligible for heart transplantation because of pulmonary hypertension related to HF alone should be considered for bridge to potential transplant eligibility with durable, long-term MCS." |
IIA |
B |
BTT: bridge to transplant; COE: class of evidence; DT: destination therapy; HF: heart failure; LOE: level of evidence; MCS: mechanical circulatory support.
International Society for Heart and Lung Transplantation
The International Society for Heart and Lung Transplantation and the Heart Failure Society of America released a guideline on acute MCS in 2023.The guideline focuses on timing, individual and device selection of acute MCS, and periprocedural and postprocedural care for cardiogenic and pulmonary shock. They provide specific recommendations depending on which MCS device is chosen. Table 4 summarizes relevant recommendations for timing of acute MCS made in the guidelines. Additional recommendations related to specific devices is related to procedural considerations.
Table 4. ISHLT/HFSA Guideline on Acute MCS
Recommendation |
COR |
LOE |
"Acute MCS should be initiated as soon as possible in patients with CS who fail to stabilize or continue to deteriorate despite initial interventions." |
I |
B |
"The use of acute MCS should be considered in patients with multiorgan failure to allow successful optimization of clinical status and neurologic assessment before placement of durable MCS or organ transplantation." |
II |
C |
COR: class of recommendation; CS: cardiogenic shock; HFSA: Heart Failure Society of America; ISHLT: International Society for Heart and Lung Transplantation; LOE: level of evidence; MCS: mechanical circulatory support
Society for Cardiovascular Angiography and Interventions et al
In 2015, the Society for Cardiovascular Angiography and Interventions, the Heart Failure Society of America, the Society of Thoracic Surgeons, and the American College of Cardiology published a joint clinical expert consensus statement on the use of percutaneous MCS devices in cardiovascular care. This statement addressed IABPs, left atrial-to-aorta assist device (eg, TandemHeart), left ventricle-to-aorta assist devices (e.g., Impella), extracorporeal membrane oxygenation, and methods of right-sided support. Specific recommendations were not made, but the statement reviews the use of MCS in individuals undergoing high-risk percutaneous intervention, those with cardiogenic shock, and those with acute decompensated heart failure.
U.S. Preventive Services Task Force Recommendations
Not applicable.
KEY WORDS:
Ventricular assist device, biventricular support, BIVAD, cardiac support, heart transplantation (transplant), LVAD, VAD, destination therapy, HeartWare®, Impella LV®, Impella 2.5, Impella 2.5 circulatory assist device, DeBakey, percutaneous ventricular assist device, pVAD, TandemHeart®, Berlin Heart EXCOR®, Impella RP, Carmat, bioprosthetic artificial heart, HeartMate III™, Total Artificial Heart, TAH, CardioWest™ Total Artificial Heart, HeartMate II®, SynCardia artificial heart, Right Ventricular Assist Device, RVAD, PediMag®, short-term continuous flow ventricular assist devices, STCF-VADs, intraluminal axial support, HeartAssist 5 Pediatric Ventricular Assist Device; NuPulseCV iVAS; Symphony Heart Assist System; CentriMag® Blood Pump; Implantable Aortic Counterpulsation Ventricular Assist Devices; Intravascular Ventricular Assist Systems; iVAS); C-Pulse, CardioVAD
APPROVED BY GOVERNING BODIES:
A number of mechanical circulatory support devices have received approval or clearance for marketing by FDA. These devices are summarized in Table 5, and described further in the sections below.
FDA maintains a list of recent device recalls at https://www.fda.gov/medical-devices/medical-device-safety/medical-device-recalls.
The HeartWare VAD System was discontinued in June 2021 due to evidence from observational studies demonstrating a higher frequency of neurological adverse events and mortality with the system compared to other commercially available left VADs. The HeartMate II and HeartMate 3 left VAD systems were recalled in April 2024 due to extrinsic outflow graft obstruction that can obstruct the device making it less effective. The recall was a corrective recall, and the devices remain on the market.
Table 5: Available Mechanical Circulatory Support Devices
Device |
Manufacturer |
Approval Date |
FDA Clearance |
PMA, HDE, or 510(k) No. |
Indication |
DeBakey VAD® Child
|
MicroMed |
Feb 2004 |
HDE |
H030003 |
Bridge to transplant in children 5-16 years of age |
HeartMate II® |
Thoratec (Abbott) |
Apr 2008 |
PMA |
P060040 |
Bridge to transplant and destination therapy |
Centrimag® |
Thoratec (Abbott) |
Dec 2019 |
PMA |
P170038
|
Postcardiotomy, bridge to decision
|
Berlin Heart EXCOR® Pediatric VAD |
Berlin |
June 2017 |
PMA |
P160035
|
Bridge to transplant or recovery |
HeartMate III™ Left Ventricular Assist System
|
Thoratec (Abbott) |
Aug 2017 Oct 2018 |
PMA |
P160054 P160054/S008 |
Bridge to transplant, and destination therapy; PMA for Pediatric patients in 2020 |
FDA: Food and Drug Administration; HDE: humanitarian device exemption; PMA: premarket approval.
*Note: Current FDA-approved pediatric VADs include the Berlin Heart EXCOR Pediatric Ventricular Assist Device (for children aged 16 years or younger) and the HeartAssist 5 Pediatric Ventricular Assist Device (for children aged 5 to 16 years). The EXCOR Pediatric VAD can be used in children up to 60 kg body weight. The HeartAssist 5 Pediatric VAD can be used in children with a BSA greater than or equal to 0.7 m2 and less than 1.5 m2).
Ventricular Assist Devices
In February 2004, the FDA approved the DeBakey VAD® Child under the HDE approval process. According to the FDA, this device is indicated under HDE for both home and hospital use for children who are between ages 5 and 16 years and who have end-stage ventricular failure requiring temporary mechanical blood circulation until a heart transplant is performed.
In April 2008, continuous flow device HeartMate II® LVAS (Thoratec, Pleasanton, CA) was approved by the FDA through the premarket approval process for use as a bridge to transplantation in cardiac transplant candidates at risk of imminent death from nonreversible left ventricular failure. The Heartmate II® LVAS is intended for use both inside and outside the hospital. In January 2010, the device received the added indication as destination therapy for use in patients with New York Heart Association (NYHA) Class IIIB or IV end-stage left ventricular failure who have received optimal medical therapy for at least 45 of the last 60 days and are not candidates for cardiac transplantation.
In October 2008, device Centrimag® Right Ventricular Assist Device (Levitronix, Zurich) was approved by the FDA under the HDE to provide temporary circulatory support for up to 14 days for patients in cardiogenic shock due to acute right-sided heart failure.
In December 2011, the Berlin Heart EXCOR® Pediatric VAD was approved via HDE. The indications for this device are pediatric patients with severe isolated left ventricular or biventricular dysfunction who are candidates for cardiac transplant and require circulatory support.
In December 2012, the FDA using the INTERMACS registry as a control approved device HeartWare® Ventricular Assist System (HeartWare, Inc., Framingham, Mass.) INTERMACS registry was established in 2005 as a joint effort involving the FDA, National Heart, Lung and Blood Institute (NHLBI), Centers for Medicare and Medicaid Services (CMS), clinicians, scientists, and industry. This was the first time the FDA approved an LVAD using registry data as a control. The University of Alabama at Birmingham manages INTERMACS.
In September 2017, HeartWare® Ventricular Assist System (HeartWare, Inc., Framingham, Mass.) was approved by the FDA for providing long-term hemodynamic support (e.g., destination therapy) in patients with advanced heart failure.
In August 2017, the FDA for providing short-term hemodynamic support (e.g., bridge to transplant) or bridge to myocardial recovery in patients with advanced refractory left ventricular heart failure approved the HeartMate™ 3 Left Ventricular Assist System (Thoratec Corp., Pleasanton, CA).
In October 2018, the HeartMate™ 3 Left Ventricular Assist System (Thoratec Corp., Pleasanton, CA) was approved by the FDA for providing long-term hemodynamic support (e.g., destination therapy) in patients with advanced heart failure.
Total Artificial Heart
The total artificial heart (TAH) is a biventricular device that completely replaces the function of the diseased heart. An internal battery needs frequent recharging from an external power source. Several systems use a percutaneous power line, but a transcutaneous power-transfer coil allows for a system without lines traversing the skin, possibly reducing the risk of infection. Because the native heart must be removed, failure of the device is synonymous with cardiac death.
Currently, the Syncardia Temporary Total Artificial Heart (Syncardia Systems) is the only Total Artificial Heart available in the US (Table 6). The AbioCor Total Artificial Heart was FDA approved under the Humanitarian Device Exemption program in 2006, but is no longer being marketed or in development.
Table 6. Available Total Artificial Heart
Device |
Manufacturer |
Approval Date |
FDA Clearance |
PMA No. |
Indication |
SynCardia Temporary Total Artificial Heart (Formerly CardioWest Total Artificial Heart and Jarvik Total Artificial Heart)
|
SynCardia Systems
|
2004
|
510(k)
|
P030011
|
Bridge to transplant in cardiac transplant-eligible candidates at risk of imminent death from biventricular failure.
|
FDA: U.S. Food and Drug Administration; PMA: premarket approval.
Percutaneous Ventricular Assist Devices (Circulatory Assist Devices)
The Impella CP received approval through the PMA process in November 2016 for short-term (less than six hours) use in individuals requiring circulatory support.
The Impella 5.5 System received approval through the PMA process in November 2016 for temporary ventricular support in cardiogenic shock.
The TandemHeart® (Cardiac Assist, Pittsburgh) received a similar 510(k) approval for short-term circulatory support in September 2005.
Several other devices are in clinical trials or awaiting FDA review.
Table 7. Available Percutaneous Ventricular Assist Devices
Device |
Manufacturer |
Approval Date |
FDA Clearance |
PMA, 510(k) No. |
Indication |
TandemHeart® |
Cardiac Assist (LivaNova) |
Sep 2005 |
510(k) |
K110493 |
Temporary left ventricular bypass of ≤6 h |
Impella CP |
Abiomed |
Nov 2016 |
PMA |
P140003 |
|
Impella 5.5 |
Abiomed |
Nov 2016 |
PMA |
P140003 |
Temporary ventricular support for ≤14h days in cardiogenic shock |
FDA: U.S. Food and Drug Administration; PMA: premarket approval.
Permanently Implantable Aortic Counter-Pulsation Ventricular Assist Devices
Permanently implantable aortic counterpulsation ventricular assist devices are being studied, as a bridge to recovery for patients with acute or chronic heart failure. Various devices are being investigated but presently no device has obtained FDA approval. Examples of devices in development or in clinical trials include, but may not be limited to, the following: CardioVAD (LVAD Technology, Detroit, MI), Symphony device (Abiomed Inc, Danvers, MA), and the C-Pulse device (CHF Solutions Inc, Eden Prairie, MN) (Kontogiannis, et al., 2016; Gafoor, et al., 2015). There are limited data in the published, peer-reviewed literature regarding the safety and effectiveness of implantable aortic counterpulsation VADs for the treatment of heart failure.
BENEFIT APPLICATION:
Coverage is subject to member’s specific benefits. Group-specific policy will supersede this policy when applicable.
ITS: Home Policy provisions apply
FEP contracts: Special benefit consideration may apply. Refer to member’s benefit plan.
CURRENT CODING:
Removal of the device before heart transplantation (CPT codes 33977-33978) is considered part of the global surgical package and incidental to the heart transplant.
CPT codes:
33927 |
Implantation of a total replacement heart system (artificial heart) with recipient cardiectomy |
33928 |
Removal and replacement of total replacement heart system (artificial heart) |
33929 |
Removal of a total replacement heart system (artificial heart) for heart transplantation (List separately in addition to code for primary procedure) |
33975 |
Implantation of ventricular assist device; extracorporeal, single ventricle |
33976 |
Implantation of ventricular assist device; extracorporeal, biventricular |
33977 |
Removal of ventricular assist device; extracorporeal single ventricle |
33978 |
Removal of ventricular assist device; extracorporeal, biventricular |
33979 |
Insertion of ventricular assist device, implantable intracorporeal, single ventricle |
33980 |
Removal of ventricular assist device, implantable intracorporeal, single ventricle |
33981 |
Replacement of extracorporeal ventricular assist device, single or biventricular, pump(s), single or each pump |
33982 |
Replacement of ventricular assist device pump(s); implantable intracorporeal, single ventricle, without cardiopulmonary bypass |
33983 |
Replacement of ventricular assist device pump(s); implantable intracorporeal, single ventricle, with cardiopulmonary bypass |
33990 |
Insertion of ventricular assist device, percutaneous, including radiological supervision and interpretation; left heart, arterial access only |
33991 |
Insertion of ventricular assist device, percutaneous, including radiological supervision and interpretation; left heart, both arterial and venous access, with transseptal puncture |
33992 |
Removal of percutaneous left heart ventricular assist device, arterial or arterial and venous cannula(s), at separate and distinct session from insertion |
33993 |
Repositioning of percutaneous right or left heart ventricular assist device with imaging guidance at separate and distinct session from insertion |
33995 |
Insertion of ventricular assist device, percutaneous, including radiological supervision and interpretation; right heart, venous access only |
33997 |
Removal of percutaneous right heart ventricular assist device, venous cannula, at separate and distinct session from insertion |
33999 |
Unlisted procedure, cardiac surgery |
93750 |
Interrogation of ventricular assist device (VAD), in person, with physician or other qualified health care professional analysis of device parameters (e.g., drivelines, alarms, power surges), review of device function (e.g., flow and volume status, septum status, recovery), with programming, if performed, and report
|
HCPCS Codes:
L8698 |
Miscellaneous component, supply or accessory for use with total artificial heart system |
PREVIOUS CODING:
Aortic Counter-Pulsation Ventricular Assist Devices
0451T |
Insertion or replacement of a permanently implantable aortic counterpulsation ventricular assist system, endovascular approach, and programming of sensing and therapeutic parameters; complete system (counterpulsation device, vascular graft, implantable vascular hemostatic seal, mechano-electrical skin interface and subcutaneous electrodes) (Deleted 12/31/21) |
0452T |
Insertion or replacement of a permanently implantable aortic counterpulsation ventricular assist system, endovascular approach, and programming of sensing and therapeutic parameters; aortic counterpulsation device and vascular hemostatic seal (Deleted 12/31/21) |
0453T |
Insertion or replacement of a permanently implantable aortic counterpulsation ventricular assist system, endovascular approach, and programming of sensing and therapeutic parameters; mechano-electrical skin interface (Deleted 12/31/21) |
0454T |
Insertion or replacement of a permanently implantable aortic counterpulsation ventricular assist system, endovascular approach, and programming of sensing and therapeutic parameters; subcutaneous electrode (Deleted 12/31/21) |
0455T |
Removal of permanently implantable aortic counterpulsation ventricular assist system; complete system (aortic counterpulsation device, vascular hemostatic seal, mechano-electrical skin interface and electrodes) (Deleted 12/31/21) |
0456T |
Removal of permanently implantable aortic counterpulsation ventricular assist system; aortic counterpulsation device and vascular hemostatic seal (Deleted 12/31/21)
|
0457T |
Removal of permanently implantable aortic counterpulsation ventricular assist system; mechano-electrical skin interface (Deleted 12/31/21) |
0458T |
Removal of permanently implantable aortic counterpulsation ventricular assist system; subcutaneous electrode (Deleted 12/31/21) |
0459T |
Relocation of skin pocket with replacement of implanted aortic counterpulsation ventricular assist device, mechano-electrical skin interface and electrodes Repositioning of previously implanted aortic counterpulsation ventricular assist device; subcutaneous electrode (Deleted 12/31/21) |
0460T |
Repositioning of previously implanted aortic counterpulsation ventricular assist device; subcutaneous electrode (Deleted 12/31/21) |
0461T |
Repositioning of previously implanted aortic counterpulsation ventricular assist device; aortic counterpulsation device (Deleted 12/31/21) |
0462T |
Programming device evaluation (in person) with iterative adjustment of the implantable mechano-electrical skin interface and/or external driver to test the function of the device and select optimal permanent programmed values with analysis, including review and report, implantable aortic counterpulsation ventricular assist system, per day (Deleted 12/31/21)
|
0463T |
Interrogation device evaluation (in person) with analysis, review and report, includes connection, recording and disconnection per patient encounter, implantable aortic counterpulsation ventricular assist system, per day (Deleted 12/31/21) |
REFERENCES:
- Aaronson KD, Eppinger MJ, Dyke DB et al. Left ventricular assist device therapy improves utilization of donor hearts. J Am Coll Cardiol. Apr 17 2002; 39(8):1247-54.
- Abbott/Thoratec Corp. Recalls HeartMate II and HeartMate 3 Left Ventricular Assist System (LVAS) due to Long-term Buildup Causing an Obstruction. U.S. Food &Drug Administration website. Updated April 15, 2024. www.fda.gov/medical-devices/medical-device-recalls/abbottthoratec-corp-recalls-heartmate-ii-and-heartmate-3-left-ventricular-assist-system-lvas-due
- Acharya D, Loyaga-Rendon RY, Pamboukian SV, et al. Ventricular Assist Device in Acute Myocardial Infarction. J Am Coll Cardiol. Apr 26 2016; 67(16): 1871-80.
- Aissaoui N, Morshuis M, Maoulida H, et al. Management of end-stage heart failure patients with or without ventricular assist device: an observational comparison of clinical and economic outcomes. Eur J Cardiothorac Surg. 2018 53(1).
- Alba AC, McDonald M, Rao V et al. The effect of ventricular assist devices on long-term post-transplant outcomes: a systematic review of observational studies. Eur J Heart Fail. Jul 2011; 13(7):785-95.
- Almond CS, Morales DL, Blackstone EH, et al. Berlin Heart EXCOR pediatric ventricular assist device for bridge to heart transplantation in US children. Circulation. Apr 23 2013; 127(16):1702-1711.
- Agrawal S, Garg L, Shah M, et al. Thirty-Day Readmissions after Left Ventricular Assist Device Implantation in the United States: Insights from the Nationwide Readmissions Database. Circ Heart Fail. Mar 2018 11(3):e004628.
- Ait Ichou J, Larivée N, Eisenberg MJ, Suissa K, Filion KB. The effectiveness and safety of the Impella ventricular assist device for high-risk percutaneous coronary interventions: A systematic review. Catheter Cardiovasc Interv. 2018 Jun; 91(7):1250-1260.
- Arnold SV, Jones PG, Allen LA, et al. Frequency of poor outcome (death or poor quality of life) after left ventricular assist device for destination therapy: results from the INTERMACS Registry. Circ Heart Fail. Aug 2016; 9(8).
- Aryana A, Gearoid O'Neill P, Gregory D, et al. Procedural and clinical outcomes after catheter ablation of unstable ventricular tachycardia supported by a percutaneous left ventricular assist device. Heart Rhythm. Jul 2014; 11(7):1122-1130.
- Bank AJ, Mir SH, Nguyen DQ et al. Effects of left ventricular assist devices on outcomes in patients undergoing heart transplantation. Ann Thorac Surg. May 2000; 69(5):1369-74; discussion 75.
- Bernhardt AM, Copeland H, Deswal A, et al. The International Society for Heart and Lung Transplantation/Heart Failure Society of America Guideline on Acute Mechanical Circulatory Support. J Heart Lung Transplant. Apr 2023; 42(4): e1-e64.
- Blume ED, Rosenthal DN, Rossano JW, et al. Outcomes of children implanted with ventricular assist devices in the United States: First analysis of the Pediatric Interagency Registry for Mechanical Circulatory Support (PediMACS). J Heart Lung Transplant. May 2016; 35(5):578-584.
- Briasoulis A, Telila T, Palla M, et al. Meta-analysis of usefulness of percutaneous left ventricular assist devices for high-risk percutaneous coronary interventions. Am J Cardiol. Aug 1 2016;118(3):369-375.
- Bulic A, Maeda K, Zhang Y, et al. Functional status of United States children supported with a left ventricular assist device at heart transplantation. J Heart Lung Transplant. Aug 2017; 36(8):890-896.
- Burkhoff D, Cohen H, Brunckhorst C, et al. A randomized multicenter clinical study to evaluate the safety and efficacy of the TandemHeart percutaneous ventricular assist device versus conventional therapy with intra-aortic balloon pumping for treatment of cardiogenic shock. Am Heart J. Sep 2006; 152(3):469 e461-468.
- Chen S, Lin A, Liu E, et al. Outpatient outcomes of pediatric patients with left ventricular assist devices. ASAIO J. Mar-Apr 2016; 62(2):163-168.
- Colombo PC, Mehra MR, Goldstein DJ, et al. Comprehensive Analysis of Stroke in the Long-Term Cohort of the MOMENTUM 3 Study. Circulation. Jan 08 2019;139(2): 155-168.
- Conway J, Al-Aklabi M, Granoski D, et al. Supporting pediatric patients with short-term continuous-flow devices. J Heart Lung Transplant. May 2016; 35(5):603-609.
- Copeland JG, Copeland H, Gustafson M et al. Experience with more than 100 total artificial heart implants. J Thorac Cardiovasc Surg. May 2012; 143(3):727-34.
- Copeland JG, Smith RG, Arabia FA et al. Cardiac replacement with a total artificial heart as a bridge to transplantation. N Engl J Med. Aug 26 2004; 351(9):859-67.
- Cowger JA, Naka Y, Aaronson KD, et al. Quality of life and functional capacity outcomes in the MOMENTUM 3 trial at 6 months: A call for new metrics for left ventricular assist device patients. J Heart Lung Transplant. Jan 2018; 37(1): 15-24.
- Davies RR, Russo MJ, Hong KN et al. The use of mechanical circulatory support as a bridge to transplantation in pediatric patients: an analysis of the United Network for Organ Sharing database. J Thorac Cardiovasc Surg. Feb 2008; 135(2):421-427, 427 e421.
- Deo SV, Sung K, Daly RC, et al. Cardiac transplantation after bridged therapy with continuous flow left ventricular assist devices. Heart Lung Circ. Mar 2014; 23(3):224-228.
- Dickstein K, Cohen-Solal A, Filippatos G, et al. ESC Guidelines for the diagnosis and treatment of acute and chronic heart failure 2008: the Task Force for the Diagnosis and Treatment of Acute and Chronic Heart Failure 2008 of the European Society of Cardiology. Developed in collaboration with the Heart Failure Association of the ESC (HFA) and endorsed by the European Society of Intensive Care Medicine (ESICM). Eur Heart J. Oct 2008; 29(19):2388-2442.
- Dowling RD, Gray LA, Etoch SW, et al. Initial experience with the AbioCor implantable replacement heart system. J Thorac Cardiovasc Surg. Jan 2004; 127(1): 131-41.
- Estep JD, Starling RC, Horstmanshof DA, et al. Risk assessment and comparative effectiveness of left ventricular assist device and medical management in ambulatory heart failure patients: results from the ROADMAP study. J Am Coll Cardiol. Oct 20 2015; 66(16):1747-1761.
- Food and Drug Administration. Summary of Safety and Probable Benefit - H040006: AbioCor Implantable Replacement Heart. 2006; www.accessdata.fda.gov/cdrh_docs/pdf4/H040006b.pdf.
- Fraser CD, Jr., Jaquiss RD, Rosenthal DN, et al. Prospective trial of a pediatric ventricular assist device. N Engl J Med. Aug 9 2012; 367(6):532-541.
- Frazier OH, Gemmato C, Myers TJ et al. Initial clinical experience with the HeartMate II axial-flow left ventricular assist device. Tex Heart Inst J 2007; 34(3):275-81.
- Frazier OH, Rose EA, McCarthy P et al. Improved mortality and rehabilitation of transplant candidates treated with a long-term implantable left ventricular assist system. Ann Surg 1995; 222(3):327-336; discussion 336-338.
- Griffith BP, Anderson MB, Samuels LE et al. The RECOVER I: A multicenter prospective study of Impella 5.0/LD for postcardiotomy circulatory support. J Thorac Cardiovasc Surg. 2013 Feb; 145(2):548-54
- Grimm JC, Sciortino CM, Magruder JT, et al. Outcomes in Patients Bridged With Univentricular and Biventricular Devices in the Modern Era of Heart Transplantation. Ann Thorac Surg. Jul 2016; 102(1):102-108.
- Goldstein DJ, Naka Y, Horstmanshof D, et al. Association of Clinical Outcomes With Left Ventricular Assist Device Use by Bridge to Transplant or Destination Therapy Intent: The Multicenter Study of MagLev Technology in Patients Undergoing Mechanical Circulatory Support Therapy With HeartMate 3 (MOMENTUM 3) Randomized Clinical Trial. JAMA Cardiol. Apr 01 2020; 5(4): 411-419.
- Goldstein DJ, Ox MC, and Rose EA. Implantable left ventricular assist devices. N England J Med. Nov 19 1998; 339(21):1522-1533.
- Gustafsson F, Shaw S, Lavee J, et al. Six-month outcomes after treatment of advanced heart failure with a full magnetically levitated continuous flow left ventricular assist device: report from the ELEVATE registry. Eur Heart J. Oct 01 2018; 39(37): 3454-3460.
- Heidenreich PA, Bozkurt B, Aguilar D, et al. 2022 AHA/ACC/HFSA Guideline for the Management of Heart Failure: Executive Summary: A Report of the American College of Cardiology/American Heart Association Joint Committee on Clinical Practice Guidelines. Circulation. May 03 2022; 145(18): e876-e894.
- Iannaccone M, Barbero U, Franchin L, et al. Comparison of mid-term mortality after surgical, supported or unsupported percutaneous revascularization in patients withseverely reduced ejection fraction: A direct and network meta-analysis of adjusted observational studies and randomized-controlled. Int J Cardiol. Feb 01 2024; 396:131428.
- IOM (Institute of Medicine). 2011. Clinical Practice Guidelines We Can Trust. Washington, DC: The National Academies Press.
- John R, Kamdar F, Liao K et al. Improved survival and decreasing incidence of adverse events with the HeartMate II left ventricular assist device as bridge-to-transplant therapy. Ann Thorac Surg 2008; 86(4):1227-34; discussion 34-5.
- Jordan LC, Ichord RN, Reinhartz O, et al. Neurological complications and outcomes in the Berlin Heart EXCOR(R) pediatric investigational device exemption trial. J Am Heart Assoc. Jan 2015; 4(1):e001429.
- Jorde UP, Kushwaha SS, Tatooles AJ, et al. Results of the destination therapy post-food and drug administration approval study with a continuous flow left ventricular assist device: a prospective study using the INTERMACS registry (Interagency Registry for Mechanically Assisted Circulatory Support). J Am Coll Cardiol. May 6 2014; 63(17):1751-1757.
- Kar B, Gregoric ID, Basra SS et al. The percutaneous ventricular assist device in severe refractory cardiogenic shock. J Am Coll Cardiol. Feb 08 2011; 57(6):688-96.
- Karami M, Eriksen E, Ouweneel DM, et al. Long-term 5-year outcome of the randomized IMPRESS in severe shock trial: percutaneous mechanical circulatory support vs. intra-aortic balloon pump in cardiogenic shock after acute myocardial infarction. Eur Heart J Acute Cardiovasc Care. Dec 06 2021; 10(9): 1009-1015.
- Kirklin JK, Naftel DC, Stevenson LW et al. INTERMACS database for durable devices for circulatory support: first annual report. J Heart Lung Transplant. Oct 2008; 27(10):1065-72.
- Kirklin JK, Pagani FD, Goldstein DJ, et al. American Association for Thoracic Surgery/International Society for Heart and Lung Transplantation guidelines on selected topics in mechanical circulatory support. J Heart Lung Transplant. Mar 2020; 39(3): 187-219.
- Lauten A, Engstrom AE, Jung C, et al. Percutaneous left-ventricular support with the Impella-2.5-assist device in acute cardiogenic shock: results of the Impella-EUROSHOCK-registry. Circ Heart Fail. Jan 2013; 6(1):23-30.
- Lemaire A, Anderson MB, Lee LY, et al. The Impella device for acute mechanical circulatory support in patients in cardiogenic shock. Ann Thorac Surg. Jan 2014; 97(1):133-138.
- Lewsey SC, Breathett K. Racial and ethnic disparities in heart failure: current state and future directions. Curr Opin Cardiol. May 01 2021; 36(3): 320-328.
- Long JW, Kfoury AG, Slaughter MS et al. Long-term destination therapy with the HeartMate XVE left ventricular assist device: improved outcomes since the REMATCH study. Congest Heart Fail 2005; 11(3):133-8.
- Maybaum S, Mancini D, Xydas S, et al. Cardiac improvement during mechanical circulatory support: a prospective multicenter study of the LVAD Working Group. Circulation. May 15 2007;115(19):2497-2505.
- Mehra MR, Goldstein DJ, Cleveland JC, et al. Five-Year Outcomes in Patients With Fully Magnetically Levitated vs Axial-Flow Left Ventricular Assist Devices in the MOMENTUM 3 Randomized Trial. JAMA. Sep 27 2022; 328(12): 1233-1242.
- Mehra MR, Uriel N, Naka Y, et al. A Fully Magnetically Levitated Left Ventricular Assist Device - Final Report. N Engl J Med. Apr 25 2019; 380(17): 1618-1627.
- Mehra MR, Cleveland JC, Uriel N, et al. Primary results of long-term outcomes in the MOMENTUM 3 pivotal trial and continued access protocol study phase: a study of 2200 HeartMate 3 left ventricular assist device implants. Eur J Heart Fail. Aug 2021; 23(8): 1392-1400.
- Miller LW, Pagani FD, Russell SD et al. Use of a continuous-flow device in patients awaiting heart transplantation. N Engl J Med. Aug 30 2007; 357(9):885-896.
- O'Neill WW, Kleiman NS, Moses J, et al. A prospective, randomized clinical trial of hemodynamic support with Impella 2.5 versus intra-aortic balloon pump in patients undergoing high-risk percutaneous coronary intervention: the PROTECT II study. Circulation. Oct 02 2012; 126(14): 1717-27.
- Organ Procurement and Transplantation Network. National Heart Patient and Graft Survival as of June 21, 2024.insights.unos.org/OPTN-metrics/.
- Organ Procurement and Transplantation Network. Heart Kaplan-Meier Patient Survival Rates For Transplants Performed: 2008 - 2015. 2018; soptn.transplant.hrsa.gov/data/view-data-reports/national-data/#
- Ouweneel DM, de Brabander J, Karami M, et al. Real-life use of left ventricular circulatory support with Impella in cardiogenic shock after acute myocardial infarction: 12 years AMC experience. Eur Heart J Acute Cardiovasc Care. Jun 2019; 8(4): 338-349.
- Ouweneel DM, Eriksen E, Sjauw KD, et al. Percutaneous mechanical circulatory support versus intra-aortic balloon pump in cardiogenic shock after acute myocardial infarction. J Am Coll Cardiol. Jan 24 2017; 69(3):278-287.
- Pagani FD, Mehra MR, Cowger JA, et al. Clinical outcomes and healthcare expenditures in the real world with left ventricular assist devices - The CLEAR-LVAD study. J Heart Lung Transplant. May 2021; 40(5): 323-333.
- Park SJ, Tector A, Piccioni W et al. Left ventricular assist devices as destination therapy: a new look at survival. J Thorac Cardiovasc Surg. Jan 2005; 129(1):9-17.
- Patel ND, Weiss ES, Schaffer J et al. Right heart dysfunction after left ventricular assist device implantation: a comparison of the pulsatile HeartMate I and axial-flow HeartMate II devices. Ann Thorac Surg. Sept 2008; 86(3):832-40; discussion 32-40.
- Peura JL, Colvin-Adams M, Francis GS, et al. Recommendations for the use of mechanical circulatory support: device strategies and patient selection: a scientific statement from the American Heart Association. Circulation. Nov 27 2012;126(22):2648-2667.
- Reddy YM, Chinitz L, Mansour M, et al. Percutaneous left ventricular assist devices in ventricular tachycardia ablation: multicenter experience. Circ Arrhythm Electrophysiol. Apr 2014;7(2):244-250.
- Rihal CS, Naidu SS, Givertz MM, et al. 2015 SCAI/ACC/HFSA/STS Clinical Expert Consensus Statement on the Use of Percutaneous Mechanical Circulatory Support Devices in Cardiovascular Care: Endorsed by the American Heart Association, the Cardiological Society of India, and Sociedad Latino Americana de Cardiologia Intervencion; Affirmation of Value by the Canadian Association of Interventional Cardiology-Association Canadienne de Cardiologie d'intervention. J Am Coll Cardiol. May 19 2015; 65(19):e7-e26.
- Rogers JG, Butler J, Lansman SL, et al. Chronic mechanical circulatory support for Inotrope-dependent heart failure patients who are not transplant candidates- Results of the INTREPID Trial. J Am Coll Cardiol. Aug 21 2007; 50(8):741-747.
- Rogers JG, Pagani FD, Tatooles AJ, et al. Intrapericardial left ventricular assist device for advanced heart failure. N Engl J Med. Feb 02 2017; 376(5):451-460.
- Romeo F, Acconcia MC, Sergi D, et al. Percutaneous assist devices in acute myocardial infarction with cardiogenic shock: Review, meta-analysis. World J Cardiol. Jan 26 2016; 8(1):98-111.
- Rose EA, Gelijns AC, Moskowitz AJ, et al. Long-term use of a left ventricular assist device for end-state heart failure. The New England Journal of Medicine, Nov 15 2001, Vol. 345, No. 20: 1435-43.
- Schafer A, Werner N, Burkhoff D, et al. Influence of Timing and Predicted Risk on Mortality in Impella-Treated Infarct-Related Cardiogenic Shock Patients. Front Cardiovasc Med. 2020; 7: 74.
- Schmitto JD, Pya Y, Zimpfer D, et al. Long-term evaluation of a fully magnetically levitated circulatory support device for advanced heart failure-two-year results from the HeartMate 3 CE Mark Study. Eur J Heart Fail. Jan 2019; 21(1): 90-97.
- Schrage B, Ibrahim K, Loehn T, et al. Impella Support for Acute Myocardial Infarction Complicated by Cardiogenic Shock. Circulation. Mar 05 2019; 139(10): 1249-1258.
- Seyfarth M, Sibbing D, Bauer I, et al. A randomized clinical trial to evaluate the safety and efficacy of a percutaneous left ventricular assist device versus intra-aortic balloon pumping for treatment of cardiogenic shock caused by myocardial infarction. J Am Coll Cardiol. Nov 4 2008; 52(19):1584-1588.
- Shuhaiber JH, Hur K, Gibbons R. The influence of preoperative use of ventricular assist devices on survival after heart transplantation: propensity score matched analysis. BMJ. Feb 10 2010; 340:c392.
- Sieweke JT, Berliner D, Tongers J, et al. Mortality in patients with cardiogenic shock treated with the Impella CP microaxial pump for isolated left ventricular failure. Eur Heart J Acute Cardiovasc Care. Mar 2020; 9(2): 138-148.
- Slaughter MS, Pagani FD, McGee EC, et al. HeartWare ventricular assist system for bridge to transplant: combined results of the bridge to transplant and continued access protocol trial. J Heart Lung Transplant. Jul 2013; 32(7):675-683.
- Starling RC, Estep JD, Horstmanshof DA, et al. Risk Assessment and comparative effectiveness of left ventricular assist device and medical management in ambulatory heart failure patients: The ROADMAP Study 2-year results. JACC Heart Fail. Jul 2017; 5(7):518-527.
- Struber M, Sander K, Lahpor J et al. HeartMate II left ventricular assist device; early European experience. Eur J Cardiothorac Surg. Aug 2008; 34(2):289-94.
- Strueber M, O'Driscoll G, Jansz P et al. Multicenter evaluation of an intrapericardial left ventricular assist system. J Am Coll Cardiol. Mar 22 2011; 57(12):1375-82.
- TEC Assessment Program. Left ventricular assist devices as destination therapy for end-stage heart failure. 2002;Volume 17; Tab 19.
- TEC Assessment Program. Ventricular assist devices in bridging to heart transplantation. 1996;Volume 11; Tab 26.
- Thiele H, Sick P, Boudriot E, et al. Randomized comparison of intra-aortic balloon support with a percutaneous left ventricular assist device in patients with revascularized acute myocardial infarction complicated by cardiogenic shock. Eur Heart J. Jul 2005; 26(13):1276-1283.
- Topkara VK, Garan AR, Fine B, et al. Myocardial recovery in patients receiving contemporary left ventricular assist devices: results from the Interagency Registry for Mechanically Assisted Circulatory Support (INTERMACS). Circ Heart Fail. Jul 2016;9(7).
- Torregrossa G, Morshuis M, Varghese R, et al. Results with SynCardia total artificial heart beyond 1 year. ASAIO J. Nov-Dec 2014; 60(6):626-634.
- Wehman B, Stafford KA, Bittle GJ, et al. Modern outcomes of mechanical circulatory support as a bridge to pediatric heart transplantation. Ann Thorac Surg. Jun 2016; 101(6):2321-2327.
- Wever-Pinzon O, Drakos SG, McKellar SH, et al. Cardiac recovery during long-term left ventricular assist device support. J Am Coll Cardiol. Oct 04 2016; 68(14):1540-1553.
- Yancy CW, Jessup M, Bozkurt B, et al. 2017 ACC/AHA/HFSA Focused Update of the 2013 ACCF/AHA Guideline for the Management of Heart Failure: A Report of the American College of Cardiology/American Heart Association Task Force on Clinical Practice Guidelines and the Heart Failure Society of America. Circulation. Aug 08 2017; 136(6): e137-e161.
- Yancy CW, Jessup M, Bozkurt B, et al. 2013 ACCF/AHA Guideline for the Management of Heart Failure-A Report of the American College of Cardiology Foundation/American Heart Association Task Force on Practice Guidelines. J Am Coll Cardiol. 2013; 62(16):e147-e239.
POLICY HISTORY:
TEC, March 1999
Medical Policy Administration Committee, February 2002
Medical Review Committee, March 2004
Medical Policy Group, May 2004 (1)
Medical Review Committee, May 2004
Medical Policy Administration Committee, June 2004
Available for comment June 28-August 11, 2004
Medical Policy Group, March 2006 (1)
Medical Policy Group, April 2008 (2)
Medical Policy Group, August 2009 (1)
Medical Policy Administration Committee, September 2009
Available for comment September 4-October 19, 2009
Medical Policy Group, October 2010 (1): Description, Key Points and Governing Body Approval updated
Medical Policy Group, November 2010 Reference Update
Medical Policy Administration Committee November 2010
Available for comment November 4 – December 20, 2010
Medical Policy Group, September 2011 (1): Update to Description, Key Points and References; Entire policy reformatted, no changes to policy statements
Medical Policy Group, December 2011 (3): Update to Approved by Governing Bodies & References (FDA Approval of EXCORE)
Medical Policy Group, March 2012 (3): Updated coverage for total artificial heart for bridge to transplant. Added other specialty recommendations and references.
Medical Policy Administration Committee March 2012
Available for comment March 15 – April 30, 2012
Medical Policy Group, November 2012 (3): 2012 Update to Key Points, Governing Bodies, and References
Medical Policy Group, November 2012: 2013 Coding Update-Added Codes 33990 - 33993; deleted Codes 0048T & 0050T effective 1/1/2013
Medical Policy Group, December 2012 (3): Update to Approved by Governing Bodies & References (FDA Approval of HeartWare)
Medical Policy Group, December 2012 (3): 2013 Coding update – Verbiage change to Code 93750-added “or other qualified health care professional”
Medical Policy Panel, February 2013
Medical Policy Group, February 2013 (3): Updated policy statement on children – amended age range from 5-16 years to 0-16 reflecting approval of the BERLIN heart EXCOR device for pediatric patients age 0-16; and clarified info on Medicare-approved heart transplant facility requirement for total artificial hearts; and Medicare-approved heart transplant facility OR Medicare-approved VAD destination facility requirement for VADs
Medical Policy Administration Committee March 2013
Available for comment March 12 through April 25, 2013
Medical Policy Group, August 2013 (4): Added verbiage to BTT policy section “Or a patient who is undergoing evaluation to determine candidacy for heart transplantation.
Medical Policy Administration Committee August 2013.
Available for comment August 22 through October 5, 2013
Medical Policy Group, February 2014 (5): Added ICD-9 and ICD-10-CM diagnosis under Coding; no change to policy statement.
Medical Policy Panel, February 2014
Medical Policy Group, February 2014 (4): Updated description. NO changes to the policy statement.
Medical Policy Group, March 2015 (4): Added Impella RP to Key Words and Approved Governing Bodies.
Medical Policy Panel, May 2015
Medical Policy Group, May 2015 (4): Updates to Key Points, Approved Governing Bodies, and References. Added policy statements to include total artificial hearts and pVADs are considered investigational for all other indications. Also, rearranged policy statements for ease of reading. Policy statement intents unchanged.
Medical Policy Panel, August 2016
Medical Policy Group, August 2016 (4): Updates to Description, Key Points, Key Words, Approved Governing Bodies and References. No change to current policy statement. Removed policy statement section for “effective dates prior to February 2012”.
Medical Policy Panel, August 2017
Medical Policy Group, September 2017 (4): Updates to Description, Key Points, Approved by Governing Bodies, and References. No change to policy statement.
Medical Policy Group, December 2017: Annual Coding Update 2018. Added new codes 33927 – 33929 effective 01/01/18 to Current Coding. Moved deleted codes 0051T – 0053T to Previous Coding.
Medical Policy Group, April 2018 (4): corrected typo.
Medical Policy Panel, August 2018
Medical Policy Group, August 2018 (3): Updates to Title, Description, Key Points, References, Approved By Governing Bodies, and Key Words; added: AbioCor® Total Artificial Heart, CardioWest™ Total Artificial Heart, HeartMate II®, SynCardia® Artificial Heart, Right Ventricular Assist Device, RVAD, PediMag®, Short-Term Continuous Flow Ventricular Assist Devices, STCF-VADs, intraluminal axial support, Impella® LV, and BIVAD. No changes to policy statement or intent.
Medical Policy Group, October 2018 (3): Updated to reflect the FDA approval of the HeartMate III™ device and the HeartWare® Ventricular Assist System for providing long-term hemodynamic support (e.g., destination therapy) in patients with advanced heart failure.
Medical Policy Group, December 2018: 2019 Annual Coding Update. Added HCPC code L8698 to the Current coding section.
Medical Policy Panel, August 2019
Medical Policy Group, September 2019 (3): 2019 Updates to Key Points. No changes to policy statement or intent.
Medical Policy Panel, August 2020
Medical Policy Group, September 2020 (3): 2020 Updates to Key Points, Approved by Governing Bodies, Practice Guidelines and Position Statements, and References. No changes to policy statement or intent.
Medical Policy Group, November 2020: Annual Coding Update. Added new CPT codes 33995 and 33997. Revised CPT codes 33990-33993 to clarify left or right heart.
Medical Policy Group, April 2021 (3): Off-cycle update related to CMS changes to patient criteria related to the use of left ventricular assist devices. Updates to Description, Key Points, Approved by Governing Bodies, References and Key Words: added: HeartAssist 5 Pediatric Ventricular Assist Device; NuPulseCV iVAS; Symphony Heart Assist System; CentriMag® Blood Pump; Implantable Aortic Counterpulsation Ventricular Assist Devices; Intravascular Ventricular Assist Systems; iVAS); C-Pulse, CardioVAD. Policy statement removed requiring heart transplant listing to be part of criteria for coverage. Added policy statements related to the use of RVAD’s. Added policy statements to include peak VO2 as a criteria point for coverage. Added clarification language related to aortic counterpulsation ventricular assist devices that are considered investigational. Reduced the number of days required for IABP support from 14 to 7 days. No other changes to policy statement or intent. Coding updated to include CPT codes for Implantable Aortic Counterpulsation Ventricular Assist Devices (0451T-0463T).
Medical Policy Administration Committee, April 2021
Available for comment April 14, 2021- May 29, 2021
Medical Policy Panel, August 2021
Medical Policy Group, August 2021 (3): 2021 Updates to Key Points, Approved by Governing Bodies, Practice Guidelines and Position Statements, and References. Policy statement revised to remove outdated eligibility criteria for short and long-term therapy.
Medical Policy Administration Committee, September 2021
Available for comment August 19, 2021 - October 3, 2021
Medical Policy Group, December 2021: 2022 Annual Coding Update. Moved CPT codes from Current coding section. Updated Previous Coding section to include codes 0451T, 0452T, 0453T, 0454T, 0455T, 0456T, 0457T, 0458T, 0459T, 0460T, 0461T, and 0462T. Added unlisted CPT Code 33999 to Current Coding section. CPT Code 33999 will be used to report permanently Implantable Aortic Counterpulsation Ventricular Assist Devices after 01/01/2022.
Medical Policy Panel, August 2022
Medical Policy Group, September 2022 (3): 2022 Updates to Description, Key Points, Practice Guidelines and Position Statements, and References. No changes to policy statement or intent.
Medical Policy Panel, August 2023
Medical Policy Group, September 2023 (3): 2023 Updates to Key Points, Approved by Governing Bodies, Benefit Applications, Previous Coding Section, Practice Guidelines and Position Statements, and References. No changes to policy statement or intent.
Medical Policy Panel, August 2024
Medical Policy Group, September 2024 (3): Updates to Description, Key Points, Approved by Governing Bodies, Coding Section, and References. Policy statement removed information listed under "Effective for dates of services on or after October 5, 2013 and prior to May 29, 2021" and no change to intent.
This medical policy is not an authorization, certification, explanation of benefits, or a contract. Eligibility and benefits are determined on a case-by-case basis according to the terms of the member’s plan in effect as of the date services are rendered. All medical policies are based on (i) research of current medical literature and (ii) review of common medical practices in the treatment and diagnosis of disease as of the date hereof. Physicians and other providers are solely responsible for all aspects of medical care and treatment, including the type, quality, and levels of care and treatment.
This policy is intended to be used for adjudication of claims (including pre-admission certification, pre-determinations, and pre-procedure review) in Blue Cross and Blue Shield’s administration of plan contracts.
The plan does not approve or deny procedures, services, testing, or equipment for our members. Our decisions concern coverage only. The decision of whether or not to have a certain test, treatment or procedure is one made between the physician and his/her patient. The plan administers benefits based on the member’s contract and corporate medical policies. Physicians should always exercise their best medical judgment in providing the care they feel is most appropriate for their patients. Needed care should not be delayed or refused because of a coverage determination.
As a general rule, benefits are payable under health plans only in cases of medical necessity and only if services or supplies are not investigational, provided the customer group contracts have such coverage.
The following Association Technology Evaluation Criteria must be met for a service/supply to be considered for coverage:
1. The technology must have final approval from the appropriate government regulatory bodies;
2. The scientific evidence must permit conclusions concerning the effect of the technology on health outcomes;
3. The technology must improve the net health outcome;
4. The technology must be as beneficial as any established alternatives;
5. The improvement must be attainable outside the investigational setting.
Medical Necessity means that health care services (e.g., procedures, treatments, supplies, devices, equipment, facilities or drugs) that a physician, exercising prudent clinical judgment, would provide to a patient for the purpose of preventing, evaluating, diagnosing or treating an illness, injury or disease or its symptoms, and that are:
1. In accordance with generally accepted standards of medical practice; and
2. Clinically appropriate in terms of type, frequency, extent, site and duration and considered effective for the patient’s illness, injury or disease; and
3. Not primarily for the convenience of the patient, physician or other health care provider; and
4. Not more costly than an alternative service or sequence of services at least as likely to produce equivalent therapeutic or diagnostic results as to the diagnosis or treatment of that patient’s illness, injury or disease.