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    v1.0.28
    OpenPayerPolicy UpdatesPhysical Medicine, Rehab & TherapiesAmbetter Nevada NMES FES Coverage Update | OpenPay…
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    CurrentAmbetter NevadaPolicy CP.MP.48

    Neuromuscular and Peroneal Nerve Electrical Stimulation (NMES)

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    Medical necessity criteria for use of neuromuscular electrical stimulation (NMES), functional electrical stimulation (FES), and peroneal nerve stimulators for members of Ambetter Nevada / Centene-affiliated health plans.

    Policy Summary
    PayerAmbetter Nevada
    PolicyNeuromuscular and Peroneal Nerve Electrical Stimulation (NMES)
    Policy CodePolicy CP.MP.48
    Change TypeAnnual reviewrevised criteria and contraindications
    Effective Date
    Next Review Date
    Key ActionObtain prior authorization and document eligibility including required training (≥32 PT sessions) and timing since spinal cord injury.
    SourceLink
    POLICY UPDATE CHANGES

    Annual review. Updated language in Criteria I.A. for clarity. Coding and descriptions reviewed. References reviewed and updated.

    Removed contraindications under II.F. including uncontrolled cardiac arrhythmias, unstable angina, joint replacement in a location targeted by FES and seizure disorder.

    Combined criteria applicable to lower extremity units into section II.G and added additional contraindications previously; later wording updated for clarity.

    OpenPayer is powered by Trek Health's payer performance platform. Trek continuously ingests, validates, and normalizes Transparency in Coverage data alongside payer policies and other commercial payer data to create a structured payer intelligence foundation. OpenPayer uses this foundation to deliver personalized search results, dynamically generated policy pages, and tailored policy monitoring based on each user's payers, specialties, billing codes, and areas of interest. The same intelligence powers broader payer performance workflows, including reimbursement benchmarking, contract evaluation, payer negotiations, and financial decision-making.

    5
    Major policy sections (I–V)
    3HCPCS codes described
    1Not supporting coverage (E0744)
    32FES training sessions required
    6+Min months since SCI

    Coverage Criteria for NMES / FES / Peroneal Nerve Stimulators

    NMES — Disuse atrophy

    Covered when ALL of the following are met for NMES used as part of comprehensive rehab:

    NMES for disuse atrophy

    • Atrophy indications (one or more)

      • Contractures due to scarring of soft tissue (e.g., burn lesions).
      • Previous casting or splinting of a limb.
      • Major knee surgery with failure to respond to physical therapy.
      • Recent hip replacement when NMES will be used until physical therapy begins.

    FES — Spinal cord injury

    FES is medically necessary for spinal cord injury when ALL of the following are met:

    FES for SCI

    • A. The member has brisk muscle contraction to stimulation and sensory perception of electrical stimulation sufficient for muscle contraction.
    • B. At least six months have passed since recovery from spinal cord injury and any restorative surgery.
    • C. Member is highly motivated, committed, and has the cognitive ability to use FES devices for walking.
    • D. Successful completion of a training program consisting of at least 32 physical therapy sessions with the device over a three-month period.
    • E. Member demonstrates a willingness to use the device long-term.

    Peroneal nerve stimulators

    Peroneal nerve stimulators coverage stance:

    Peroneal nerve stimulators for incomplete SCI: Peroneal nerve stimulators (examples include NESS L300, NESS L300 Plus, L300 Go System, WalkAide, Odstock [ODFS] Dropped Foot Stimulator) are medically necessary for incomplete spinal cord injury.
    Peroneal nerve stimulators — other indications: Peroneal nerve stimulators have not been proven safe and effective for any indication other than incomplete spinal cord injury, including but not limited to foot drop in cerebral palsy, multiple sclerosis, traumatic brain injury, or stroke.

    Not proven safe/effective — other indications

    Not proven safe/effective — other indications: Neuromuscular electrical stimulation for any other indication (e.g., idiopathic scoliosis, heart failure) is not proven safe and effective.

    Peroneal nerve stimulators (examples: NESS L300 family, L300 Go, WalkAide, Odstock ODFS) are medically necessary for incomplete spinal cord injury. Devices billed under HCPCS should follow the policy criteria for peroneal stimulators. The policy also specifies that peroneal nerve stimulators are not supported for indications other than incomplete spinal cord injury, and specifically lists HCPCS code E0744 (neuromuscular stimulator for scoliosis) as a code that does not support coverage for those other indications.

    Neuromuscular electrical stimulation (NMES) and functional electrical stimulation (FES) are not considered proven safe and effective for indications that are not listed as medically necessary. Examples of conditions for which NMES/FES is not supported include idiopathic scoliosis and heart failure, among other non‑specified uses; requests for these indications do not meet the policy’s medically necessary criteria.

    Coding and Training Requirements

    Referenced HCPCS codesHCPCS
    E0745Neuromuscular stimulator, electronic shock unit.
    E0764Functional neuromuscular stimulation, transcutaneous stimulation of sequential muscle groups of ambulation with computer control, used for walking by spinal cord injured, entire system, after completion of training program.
    E0770Functional electrical stimulator, transcutaneous stimulation of nerve and/or muscle groups, any type, complete system, not otherwise specified
    HCPCS codes that do not support coverage criteriaHCPCSNot Covered
    E0744Neuromuscular stimulator for scoliosis
    inv-09: FES training sessions requirement — >= 32 physical therapy sessions over a 3-month period
    FES training sessions requirement>= 32 physical therapy sessions with the device over a 3-month period
    Program settingTraining described as a formal physical therapy program using the device
    PurposeSuccessful completion of the training program is required for FES medical necessity for SCI
    inv-10: Minimum time since SCI recovery/restorative surgery — >= 6 months
    Minimum time since SCI recovery/restorative surgery>= 6 months since recovery from spinal cord injury and restorative surgery
    Documentation required

    Provider Requirements, Prior Authorization, and Denial Risks

    Prior Authorization

    Prior Authorization and Device Codes

    Prior Authorization Required. Prior authorization is required when billing for NMES/FES devices. Providers must document eligibility per the policy clinical criteria (e.g., intact nerve supply, brisk muscle response, required training) and submit the appropriate HCPCS device codes with the authorization request.

    • Affected HCPCS codes: E0745, E0764, E0770
    • Prior authorization must include documentation that device use meets medical necessity criteria
    Documentation Required

    Therapy Setting and Training

    Therapy must be provided in a skilled therapy setting and delivered as one-on-one training. FES and NMES services are typically provided only in inpatient hospitals, outpatient hospitals, comprehensive outpatient rehabilitation facilities, or outpatient rehabilitation facilities. Document that the member participated in a supervised training program (e.g., the required 32 physical therapy sessions over three months for FES when applicable).

    Background and Clinical Rationale

    Neuromuscular electrical stimulation (NMES) delivers electrical impulses through surface electrodes to elicit muscle contraction. It is used both to treat disuse atrophy as part of a comprehensive rehabilitation program and as functional electrical stimulation (FES) to produce functional movement patterns (for example, standing or ambulation) in patients with neurologic impairment. FES is typically applied in patients with upper motor neuron lesions and may improve strength, circulation, and functional activities when policy criteria (e.g., preserved nerve/muscle responsiveness and required training) are met.

    Definitions

    inv-18: Definition — NMES: Device-based electrical stimulation to elicit muscle contractions for atrophy/strengthening.
    DefinitionDevice-based electrical stimulation applied to muscles to elicit contractions for treatment of muscle atrophy or strengthening.
    MechanismTransmits electrical impulses via electrodes to selected muscle groups to produce contractions at varying intensity levels
    IndicationsUsed for disuse atrophy and as one component of comprehensive rehabilitation when nerve supply is intact
    inv-19: Definition — FES: Functional electrical stimulation to produce functional movement patterns in neurologic impairment.
    DefinitionFunctional electrical stimulation (FES) is the application of electrical stimulation to activate muscles to produce functional movement patterns (e.g., standing, walking) in patients with neurologic impairment.
    Typical use
    Policy Summary
    PayerAmbetter Nevada
    PolicyNeuromuscular and Peroneal Nerve Electrical Stimulation (NMES)
    Policy CodePolicy CP.MP.48
    Change TypeAnnual reviewrevised criteria and contraindications
    Effective Date
    Next Review Date
    Key ActionObtain prior authorization and document eligibility including required training (≥32 PT sessions) and timing since spinal cord injury.
    SourceLink
    On This Page
    Coverage Criteria for NMES / FES / Peroneal Nerve StimulatorsCoding and Training RequirementsProvider Requirements, Prior Authorization, and Denial RisksBackground and Clinical RationaleDefinitions
    F. None of the following contraindications are present: 1) Cardiac pacemaker; 2) Severe scoliosis or severe osteoporosis; 3) Skin disease or cancer at area of stimulation; 4) Irreversible contracture; 5) Autonomic dysreflexia.

  1. G. Additional requirements for lower extremity FES

    • 1) Intact lower motor units (L1 and below, including both muscle and peripheral nerve).
    • 2) Muscle and joint stability adequate for weight bearing at upper and lower extremities and ability to demonstrate balance and control to maintain an upright support posture independently.
    • 3) Transfers independently and demonstrates independent standing tolerance for at least three minutes.
    • 4) Demonstrates hand and finger function to manipulate controls.
    • 5) No hip and knee degenerative disease and no history of long bone fracture secondary to osteoporosis.
    2. Clinical records must document the date of injury and any restorative surgery to confirm the 6-month interval
    Relation to eligibilityEligibility for FES requires meeting this minimum time threshold as part of medical necessity criteria
    inv-11: Independent standing tolerance for lower-extremity FES — >= 3 minutes
    Independent standing tolerance>= 3 minutes of independent standing tolerance
    ContextRequired when lower extremity FES is requested as part of the set of LE-specific criteria
    Associated requirementsMember must also transfer independently and demonstrate adequate balance/control and muscle/joint stability
    • Permitted settings: inpatient hospital, outpatient hospital, comprehensive outpatient rehabilitation facility, outpatient rehabilitation facility
    • Document one-on-one training participation and number/frequency of sessions
    Denial Risk

    Denial Risk for Unmet Criteria and Off‑Indication Use

    Requests that do not meet the policy’s medical necessity criteria are at risk for denial. Common denial risks include absence of required training or documentation, insufficient time since spinal cord injury or restorative surgery, lack of brisk muscle contraction/sensory perception, or requests for peroneal stimulators for indications other than incomplete spinal cord injury (e.g., stroke, MS, CP, TBI).

    • Denial risk if training requirement (e.g., ≥32 PT sessions over 3 months) is not documented
    • Denial risk if <6 months since recovery from SCI/restorative surgery
    • Denial risk for peroneal stimulators for off‑indication uses (stroke, MS, CP, TBI)
    Applied to enhance functional activity in neurologically impaired patients, especially for upper motor neuron lesions
    Therapeutic effectsCan strengthen muscles, improve circulation, slow atrophy, and improve functional activities such as standing and walking