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    OpenPayerPolicy UpdatesDialysis/Renal ReplacementAmeriHealth Caritas wearable dialysis Coverage | O…
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    CurrentAmeriHealth CaritasPolicy CCP.1428

    Wearable dialysis and implantable artificial kidneys

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    Defines AmeriHealth Caritas' coverage stance on wearable dialysis devices and implantable artificial kidneys for members, describing clinical evidence and alternatives. Affects providers requesting coverage for these technologies.

    Policy Summary
    PayerAmeriHealth Caritas
    PolicyWearable dialysis and implantable artificial kidneys
    Policy CodePolicy CCP.1428
    Change TypeNo material change
    Effective DateFeb 2, 2025
    Last ReviewOct 1, 2025
    Next Review DateFeb 1, 2027
    Key ActionSubmit claims for wearable or implantable artificial kidney devices will be denied as investigational; use established dialysis therapies for covered care.
    SourceLink
    POLICY UPDATE CHANGES

    No material clinical or coverage changes in this revision.

    0FDA-approved devices
    InvestigationalCoverage stance
    Proof-of-conceptEvidence stage
    2Covered alternatives

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    Coverage Determination and Criteria

    General coverage determination

    Covered when ALL of the following are met:

    Policy coverage statement: Wearable dialysis and implantable artificial kidneys are investigational/not clinically proven and are therefore not medically necessary.

    Policy class-level determination based on current evidence and lack of FDA-approved devices.

    Devices and procedures related to wearable dialysis and implantable artificial kidneys are excluded from coverage because there are currently no FDA‑approved commercial devices. Available human data are limited to small proof‑of‑concept studies and most implantable artificial kidney efforts remain in the preclinical stage; therefore these technologies have not met requirements for coverage. This exclusion reflects the absence of approved products and the limited clinical evidence base supporting safety and effectiveness.

    Investigational and not medically necessary.

    Coding

    No specific codes listedmixed
    No codes listed

    Provider Actions and Billing Guidance

    Prior Authorization

    Prior authorization not applicable for investigational devices

    No prior authorization pathway exists for wearable dialysis or implantable artificial kidney devices because they are considered investigational and not medically necessary.

    Step Therapy

    Step to established therapies

    Providers should use established covered renal replacement therapies—hemodialysis or peritoneal dialysis—as the applicable alternatives to wearable or implantable devices.

    • Hemodialysis is an established life-sustaining therapy.
    • Peritoneal dialysis is an established covered alternative.
    Documentation Required

    Background

    Conventional renal replacement therapies—hemodialysis and peritoneal dialysis—are established, life‑sustaining treatments but have important limitations. They do not fully replace renal endocrine and tubular functions and can impose significant burdens on patients’ quality of life, mobility, and ability to perform self‑care at home. Wearable and implantable devices are being developed to provide more continuous solute clearance and ultrafiltration with improved mobility and potential for home use, but they must still address critical requirements for adequate solute clearance, ultrafiltration control, biocompatibility, safe vascular or implantable access, and practical device ergonomics. Implantable approaches, in particular, remain largely in preclinical development and must overcome challenges in providing viable renal tubular cell function, biocompatible membranes, and long‑term device stability.

    Definitions

    Wearable artificial kidney — key definition and attributes
    DefinitionPortable device designed to provide continuous or extended dialysis-like solute clearance and ultrafiltration while permitting patient mobility.
    Key attributesPortable, lightweight (ideally <5 pounds), battery-operated pumping system, dialysate regeneration, and biocompatible dialysis membrane.
    Clinical functionProvides continuous renal replacement therapy aiming for adequate solute clearance and ultrafiltration to regulate electrolytes, acid–base status, and blood pressure.
    Safety and device requirementsRequires vascular access, safety features to prevent air emboli and blood loss, and patient monitoring capabilities.
    Regulatory/evidence statusNo FDA‑approved wearable or implantable artificial kidney devices; human data limited to small proof‑of‑concept studies and pilot trials.

    Revision History

    2025-02-02Policy effective

    Policy effective date recorded for Clinical Policy CCP.1428

    2025-10-01Policy reviewLatest

    Last review of the policy performed

    Policy Summary
    PayerAmeriHealth Caritas
    PolicyWearable dialysis and implantable artificial kidneys
    Policy CodePolicy CCP.1428
    Change TypeNo material change
    Effective DateFeb 2, 2025
    Last ReviewOct 1, 2025
    Next Review DateFeb 1, 2027
    Key ActionSubmit claims for wearable or implantable artificial kidney devices will be denied as investigational; use established dialysis therapies for covered care.
    SourceLink
    On This Page
    Coverage Determination and CriteriaCodingProvider Actions and Billing GuidanceBackgroundDefinitionsRevision History

    Supporting evidence documentation

    Providers may submit supporting literature and evidence summaries from the referenced searches, but the devices remain investigational and not medically necessary.

    • Searches and references used for this policy are documented (PubMed, Cochrane, AHRQ, CMS).
    • Submitted literature will be considered as supporting information but does not change investigational status.
    Denial Risk

    Denial risk for investigational devices

    Claims for wearable dialysis and implantable artificial kidney devices will be denied because these technologies are investigational and not medically necessary.

    • No FDA-approved wearable or implantable artificial kidney devices exist.
    • Available human data are limited to small proof-of-concept studies.
    Implantable artificial kidney — definition and key points
    DefinitionA biohybrid device combining artificial filters and living renal tubular cells intended to perform filtration and active secretion functions of the kidney.
    Intended functionsReplace glomerular filtration plus active tubular secretion to remove waste, regulate fluid/electrolyte balance, and perform metabolic and endocrine roles.
    Development statusCurrently in preclinical stages with no published human results for implantable devices; technical challenges include stable tubular cell lines and biocompatible membranes.
    Potential advantagesMay overcome shortcomings of self-care dialysis and limited donor transplantation by enabling home-based continuous replacement with reduced barriers to care.