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Ventricular Assist Devices
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Defines Aetna's medical necessity, investigational indications, and coding guidance for FDA‑approved ventricular assist devices (including implantable, percutaneous, pediatric, and right VADs) for members receiving circulatory support or awaiting transplant.
No material clinical or coverage changes in this revision.
Coverage Criteria for Ventricular Assist Devices
Destination therapy (implantable VAD)
Covered when ALL of the following are met for implantable VAD destination therapy
Criteria may be waived in specified circumstances.
FDA‑approved indications (implantable, pVAD, pediatric, RVAD, Impella RP)
Covered when ANY of the following FDA‑approved indications apply
Clinical specifics and duration vary by device and indication; document FDA approval and indication for the chosen device.
Destination therapy (durable LVAD)
Destination therapy with a durable LVAD is covered when ALL of the following are met:
CMS removed prior BSA >1.5 m2 requirement; peak VO2 threshold increased from 12 to 14 ml/kg/min.
Short-term percutaneous/extracorporeal VAD support
Short-term percutaneous or extracorporeal VADs may be considered for temporary hemodynamic support in specified situations (bridge-to-recovery, high-risk PCI, cardiogenic shock):
Document indication, device model, and intended short-term duration per FDA labeling and clinical justification.
The policy identifies several procedures as experimental and investigational. Specifically, concomitant mitral valve surgery performed at the time of LVAD implantation for the purpose of treating mitral regurgitation is listed as investigational. In addition, permanently implantable aortic counter‑pulsation VAD systems (for example, the NuPulseCV iVAS and the Symphony Heart Assist System) are considered not medically established and therefore investigational. Mesenchymal precursor cell therapy used adjunctively in VAD recipients is also listed as investigational.
The Centers for Medicare & Medicaid Services (CMS) reviewed destination therapy eligibility and declined to expand coverage to NYHA Class IIIb patients because the pivotal trial evidence contained only a small proportion of Class IIIb patients (about 20%) with no subgroup results reported and because the Class IIIb subclassification is not broadly accepted or reliably identifiable in routine practice. The policy cites these CMS findings when describing why destination therapy coverage remains focused on patients meeting the policy’s NYHA Class IV and other defined thresholds.
The policy notes important limitations in the current evidence base. Many comparative and device-outcome data come from observational registries and retrospective analyses that lack granular hemodynamic details (for example, right heart catheterization values, vasopressor use, lactate) at the time of device selection. These sources are susceptible to residual confounding and selection bias, reducing certainty about device-specific benefits. Systematic reviews and meta-analyses of micro-axial LVADs report heterogenous observational data and call for randomized trials to clarify effectiveness and safety.
The policy records device-specific contraindications drawn from manufacturer labeling and regulatory summaries. The HeartWare™ HVAD™ System is explicitly noted as contraindicated in patients who cannot tolerate anticoagulation therapy, and the policy cites the device labeling to support this safety-related restriction.
Renal disease is highlighted as a major prognostic consideration for LVAD candidacy. The policy references reviews reporting that an estimated GFR below 30 ml/min/1.73 m2 (stage 4 CKD) is a general contraindication, and that patients on chronic dialysis (end-stage renal disease) have been treated as an absolute contraindication in some reports due to markedly worse outcomes.
Aetna considers use of VADs, including implantable LVADs, percutaneous VADs (pVADs), pediatric VADs, and RVADs, for indications that do not meet the policy’s specific FDA‑approved or stated clinical criteria to be experimental and investigational. Such uses do not meet the medical‑necessity standards in this policy and may be denied when submitted for coverage.
The policy does not support routine use of percutaneous LVADs as the first-line mechanical strategy for cardiogenic shock. Meta-analysis and large registry studies show improved hemodynamics but do not demonstrate improved early survival compared with intra-aortic balloon pump (IABP). Observational data have shown higher in-hospital mortality and bleeding with intra‑vascular micro‑axial LVADs versus IABP in AMI complicated by cardiogenic shock, leading the policy to conclude that pVADs are not supported as first‑line therapy based on current evidence.
Comparative-effectiveness evidence summarized in the policy indicates that micro‑axial LVADs have not demonstrated a mortality benefit relative to extracorporeal membrane oxygenation (ECMO) or intra‑aortic balloon pump (IABP). Systematic reviews and large observational studies report similar or higher short‑term mortality and higher complication rates (including bleeding) with micro‑axial devices versus IABP, and the authors conclude that current evidence is insufficient to establish superiority of micro‑axial LVADs over ECMO or IABP.
Coding and Clinical Thresholds
| 33975 | Insertion of ventricular assist device; extracorporeal, single ventricle. |
| 33976 | Insertion 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 ventricular. |
| 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; arterial access only. |
| 0451T | Insertion or replacement of a permanently implantable aortic counterpulsation ventricular assist system, endovascular approach, and programming of sensing and therapeutic parameters. |
| 0452T | Insertion or replacement of a permanently implantable aortic counterpulsation ventricular assist system, endovascular approach, and programming of sensing and therapeutic parameters. (series 0451T-0454T) |
| 0455T | Removal of permanently implantable aortic counterpulsation ventricular assist system. |
| 0459T | Relocation of skin pocket with replacement of implanted aortic counterpulsation ventricular assist device, mechano-electrical skin interface and electrodes. |
| Q0477 | Power module patient cable for use with electric or electric/pneumatic ventricular assist device, replacement only. |
| Q0478 | Power adapter for use with electric or electric/pneumatic ventricular assist device, vehicle type. |
| Q0479 | Power module for use with electric or electric/pneumatic ventricular assist device, replacement only. |
| Q0480 | Driver for use with pneumatic ventricular assist device, replacement only. |
| Q0481 | Microprocessor control unit for use with electric ventricular assist device, replacement only. |
| Q0482 | Microprocessor control unit for use with electric/pneumatic combination ventricular assist device, replacement only. |
| Q0483 | Monitor/display module for use with electric ventricular assist device, replacement only. |
| Q0484 | Monitor/display module for use with electric or electric/pneumatic ventricular assist device, replacement only. |
| Q0485 | Monitor control cable for use with electric ventricular assist device, replacement only. |
| Q0486 | Monitor control cable for use with electric/pneumatic ventricular assist device, replacement only. |
| I23.0 - I23.9 | Certain current complications following ST elevation (STEMI) and non-ST elevation (NSTEMI) myocardial infarction (within the 28 day period). |
| I50.1 - I50.9 | Heart failure. |
| I97.0 | Postcardiotomy syndrome. |
| I97.110 | Postprocedural cardiac insufficiency following cardiac surgery. |
| R57.0 | Cardiogenic shock. |
| Z76.82 | Awaiting organ transplant status [awaiting heart transplant]. |
| Z95.811 | Presence of heart assist device. |
| I05.1 | Rheumatic mitral insufficiency [mitral repair]. |
| I34.0 | Nonrheumatic mitral (valve) insufficiency [mitral repair]. |
| P100047 | HeartWare Ventricular Assist System PMA No. P100047 |
| P140003 | Impella 2.5 System PMA No. P140003 |
| K016723 | Impella Recover LP 2.5 510(k) K016723 |
| H140001 | Impella RP System HDE No. H140001 |
| H070004 | CentriMag Right Ventricular Assist System HDE No. H070004 |
| H100004 | EXCOR Pediatric VAD Humanitarian Use Device H100004 |
| P160054 | Thoratec HeartMate 3 PMA No. P160054 |
| P060040 | Thoratec HeartMate II PMA No. P060040 |
| K083111 | Impella 5.0 510(k) K083111 |
Authorization, Documentation, and Operational Requirements
Prior Authorization Required
Prior authorization is required for VAD procedures and supplies when medical necessity criteria are being claimed. Prior authorization requests should confirm FDA approval for the chosen device and that the member meets the applicable clinical criteria (e.g., destination therapy labeling, NYHA class, prior medical management, LVEF, peak VO2 or documented dependence on balloon pump/IV inotropes). Failure to document FDA approval status and alignment with labeled indications may affect coverage determination.
- Prior authorization required for listed VAD procedure and supply codes when medical necessity is claimed (see CPT/HCPCS code lists).
- Confirm device has FDA approval for the requested indication (bridge to transplant, destination therapy, temporary support, pediatric indication, etc.).
Prior Authorization: Temporary VADs (up to 14 days)
Temporary-use VADs intended for short-term circulatory support (examples: CentriMag, Impella RP) are described for use up to 14 days for indicated acute right ventricular failure or post-operative support. Prior authorization should reflect the temporary nature and the FDA-labeled duration of use.
- CentriMag: FDA HDE approved for temporary support up to 14 days for cardiogenic shock due to acute RV failure.
- Impella RP: intended for temporary support up to 14 days for adults/pediatrics (BSA ≥ 1.5 m2) in specified settings.
Authorization Aligned with FDA Indications
Authorization decisions must align with FDA-approved indications for devices. Use of devices or indications not approved by the FDA or not listed in this policy should be considered experimental/investigational and are not covered.
- Examples: Destination therapy and bridge-to-transplant indications require device-specific FDA labeling (e.g., HeartMate 3, HeartMate II).
- Off-label use of pVADs or pediatric VADs outside specified medically necessary criteria is considered experimental/investigational.
Concomitant Aortic Valve Procedures Require Documented Justification
When a concomitant aortic valve procedure is planned at the time of LVAD implantation, documentation must justify the indication for the valve procedure and include evidence of discussion of increased perioperative risk and alternative approaches. Concurrent aortic valve procedures have been associated with higher short-term mortality and reduced long-term survival compared with isolated LVAD implantation.
- Document the specific indication for the aortic valve procedure (repair, replacement, closure) and pre-procedure aortic insufficiency severity.
- Document that risks and benefits, including higher short-term mortality and longer cardiopulmonary bypass time, were discussed with the patient/caregiver.
Prior Authorization — Not Specified in This Section
This section does not specify additional separate prior authorization pathways beyond the requirement to consult the main policy and applicable plan/program provisions. Providers should consult the main policy, plan disclosures, and program provisions for operational details (submission portals, timelines, and local plan rules).
- If in doubt, submit clinical documentation with the authorization request per the main policy guidance and plan-specific instructions.
- Refer to plan disclosures and program provisions for member-specific coverage rules.
Prior Authorization — See Main Policy
Providers should consult the main VAD policy and plan documents for full prior authorization instructions, submission checklists, and any network- or plan-specific requirements.
- See main policy and plan disclosures for how to initiate prior authorization and for any state- or product-specific exceptions.
Use of a VAD for Indications Other Than FDA‑Approved/Policy‑Listed
Use of a VAD for indications other than FDA‑approved or policy-listed indications is considered experimental and investigational and is not covered due to insufficient evidence.
- Off-label uses lacking peer-reviewed evidence are not covered.
- Provide clinical trial identifiers or strong evidence if pursuing coverage for novel indications; otherwise, expect denial as investigational.
Observational Data Limitations May Trigger Review
Observational and registry data have limitations (residual confounding, limited granular hemodynamic/lab data, device heterogeneity) that may prompt additional review or requests for more detailed documentation to support medical necessity.
- Registry/retrospective studies may not capture the clinical status at decision time (vasopressor use, lactate, right heart cath measurements).
- Be prepared to provide detailed hemodynamics, timing of device placement, and rationale when observational evidence is used to support requests.
HVAD Safety / Market Withdrawal
The HeartWare (HVAD) system distribution and sale were stopped by the manufacturer due to safety concerns (increased neurological adverse events and mortality) and device-specific pump failure risks. Providers must account for this market withdrawal when requesting authorization and should document device availability and safety considerations.
- Medtronic stopped distribution/sale of the HeartWare HVAD System (August 2021) due to increased risk of neurologic events and mortality.
- If HVAD or other withdrawn devices are proposed, include justification and mention alternative FDA‑approved devices.
LVAD in ESRD — Prognostic Consideration
For members with end-stage renal disease (ESRD) being considered for LVAD placement, document the poor prognosis and engage in shared decision-making; the markedly increased early mortality may affect appropriateness and coverage considerations.
- Studies report very high early mortality in ESRD patients after LVAD placement (median time to death often measured in days; significantly higher in-hospital mortality).
- Document counseling regarding prognosis and treatment goals when ESRD is present.
No Denial Triggers Are Specified in This Section
No specific denial triggers are enumerated in this section beyond the general statements that non–FDA‑approved or investigational uses are not covered. Providers should recognize that absence of required documentation or failure to meet stated clinical criteria may result in denial.
- There are no additional explicit provider-level denial triggers listed here; however, lack of required documentation or nonalignment with FDA/policy criteria may prompt denial.
- If coverage is denied, providers can appeal with supplemental clinical evidence aligning to policy criteria.
No Denial Triggers or Authorization Requirements in Additional-Information Sections
Similarly, no separate denial triggers or additional authorization requirements are listed in the Additional Information sections; operational or plan-level requirements should be confirmed with the main policy and plan documents.
- Check plan disclosures and program provisions for any member- or product-specific denial or authorization rules.
Documentation Should Support FDA Approval and Clinical Status
Documentation submitted with authorization requests should explicitly support FDA approval status and demonstrate the member meets clinical criteria: NYHA class, LVEF, duration and failure of optimal medical management, peak VO2 results or objective dependence on inotropes/balloon pump, and device model and indication.
- Document NYHA functional class, LVEF (%) and peak VO2 (ml/kg/min) if available.
- If exercise testing not possible, document inotrope or balloon pump dependence with duration (e.g., 7 days for balloon pump, 14 days for IV inotropes).
- Confirm and document device model and its FDA-labeled indication.
Recommended Clinical Documentation Elements
Recommended clinical documentation elements to include with prior authorization: detailed hemodynamics, vasopressor/inotrope use and duration, lactate, right-heart catheterization measurements, device model, timing of device placement, and peri-procedural details.
- Right heart cath values (RAP, PAP, PCWP, cardiac index), PAPi and other RV failure predictors.
- Timing of events (onset of shock, device insertion date), vasopressor doses and duration, lactate trends, and prior ECMO/renal replacement therapy if applicable.
Device Trial Documentation
When authorization is supported by device trial data, provide trial-supported indications and relevant cohort characteristics (including pediatric cohorts and body-surface-area groups) to demonstrate applicability to the member.
- Include IDE or post-approval study identifiers and outcomes if relying on trial evidence (e.g., Excor pediatric IDE cohorts by BSA).
- Document how the member’s characteristics align with trial cohorts (age, BSA, severity).
Pre-Implant RV Failure Risk Documentation
Pre-implant assessment should document risk factors for post-LVAD right ventricular failure (RVF) — include INTERMACS profiles, need for pre-op ECMO or renal replacement therapy, severe tricuspid regurgitation, prior cardiac surgery, and hemodynamic predictors (elevated RAP, low PAPi, low stroke volume).
- Report INTERMACS profile, pre-op support (ECMO, IABP), renal replacement therapy status, and echocardiographic/tricuspid regurgitation findings.
- Provide calculated PAPi and other RVF risk indices where available.
No Documentation Requirements Are Specified Beyond Those Listed
This section does not specify separate or additional documentation requirements beyond the clinical items listed above; submit those standard elements with authorization requests.
- If specific plan or state rules impose additional documentation requirements, include those per main policy guidance.
Medical Therapy Trial
Prior to LVAD implantation for destination therapy, members must have failed optimal medical management (including beta-blockers and ACE inhibitors if tolerated) for at least 45 of the last 60 days, or meet alternative dependency criteria (7 days balloon pump, 14 days IV inotropes). Evidence of attempted optimal medical therapy should be provided.
- Document medication trials, doses, and durations (e.g., beta-blocker, ACE inhibitor) covering at least 45 of the last 60 days when applicable.
- Alternatively document documented balloon pump or IV inotrope dependence with duration.
Step Approach Recommendation — Consider IABP Before Micro-Axial LVAD (Evidence Context)
Given comparative evidence suggesting higher in-hospital mortality and bleeding with intra-vascular micro-axial LVADs versus IABP in some AMI/CS cohorts, consider a step approach (e.g., IABP before micro-axial LVAD) where clinically appropriate; document rationale for device selection.
- If bypassing IABP in favor of a micro-axial device (Impella), provide clinical justification and supporting hemodynamics.
- Recognize observational evidence limitations and document why the selected device is optimal for the individual patient.
Step Therapy
There are no formal step-therapy sequencing requirements specified in this policy (no mandatory trials of another device prior to approval), but clinical judgement and documentation supporting device choice are expected.
- Providers should document rationale if an alternative device or escalation was not attempted.
- Authorization reviewers may request additional justification when step choices deviate from common practice.
Pediatric Anti-Thrombotic Plan
For pediatric durable VAD candidates, include a planned anti-thrombotic regimen and monitoring plan in the documentation due to high bleeding and thrombotic event rates and variability in practice.
- Document perioperative and long-term anticoagulation strategy (e.g., unfractionated heparin transitioning to LMWH/warfarin) and antiplatelet plan (aspirin, dipyridamole where applicable).
- Include monitoring plans and laboratory targets given pediatric monitoring challenges.
Background and Context
Ventricular assist devices (VADs) are mechanical pumps that support the left or right ventricle. Implantable left ventricular assist devices (LVADs) provide long‑term circulatory support and are used as a bridge to transplant or as destination therapy in patients not eligible for transplant. Percutaneous VADs (pVADs) such as TandemHeart and Impella are catheter‑delivered, short‑term devices intended for temporary circulatory support (for example, during cardiogenic shock or high‑risk PCI). Temporary extracorporeal RVADs and percutaneous right‑sided devices (e.g., Impella RP) are described for short durations (up to 14 to 30 days depending on device) to manage acute right ventricular failure.
Definitions and Device Types
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