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ReActiv8 Implantable Neurostimulation System — Coverage Criteria

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Defines OrthoNet's coverage stance and evidence assessment for the ReActiv8 restorative neurostimulation system used to treat chronic mechanical low back pain associated with multifidus muscle dysfunction; applies to medical necessity determinations for members receiving this device.

Policy Summary

Payerorthonet

PolicyReActiv8 Implantable Neurostimulation System — Coverage Criteria

Policy CodePolicy N/A

Change TypeTechnical — no material change

Effective DateJun 4, 2026

Last ReviewJun 4, 2026

Next Review DateN/A

Key ActionObtain and document imaging or physiological confirmation of multifidus dysfunction and prior failure of optimal medical management before requesting coverage.

SourceLink

POLICY UPDATE CHANGES

No material clinical or coverage changes in this revision.

Not medically necessarycoverage stance

PMA P190021FDA status

RCTs & cohortsevidence

CPTs listedcoding examples

Coverage and Medical Necessity

Medical necessity determination

Covered when ALL of the following are met

Policy coverage criteria: ReActiv8 is considered unproven and not medically necessary for chronic mechanical low back pain due to lumbar multifidus dysfunction because evidence is insufficient to determine efficacy

Policy stance: not medically necessary per OrthoNet

The ReActiv8® Implantable Neurostimulation System is considered unproven and not medically necessary for the treatment of chronic mechanical low back pain associated with lumbar multifidus muscle dysfunction. This policy stance reflects the determination that the device has not been shown to provide sufficient clinical benefit to meet OrthoNet coverage criteria for medical necessity.

ReActiv8 is not medically necessary because there is insufficient evidence demonstrating improvement in net health outcomes for patients with chronic mechanical low back pain due to multifidus dysfunction. The available evidence does not adequately establish the therapy’s efficacy to support coverage.

Prior Conservative Therapy Required

Failure of prior conservative therapy (medications and physical therapy)

Prior to consideration of ReActiv8, the following conservative therapy requirements must be documented. Covered when ALL of the following are met:

Conservative therapy prerequisite: Patient has failed optimal medical management including pain medications and physical therapy before consideration of ReActiv8

Per device indication and policy; documentation of failure of prior conservative therapy required

Documentation of multifidus dysfunction: Clinical documentation confirming multifidus muscle dysfunction (e.g., positive prone instability test) and supporting imaging or physiological testing (e.g., lumbar MRI or physiological confirmation) is provided

Imaging/physiological confirmation required to support patient selection

Surgical candidacy: Documentation that the patient is not a candidate for spine surgery

Provider must document reasons patient is not a surgical candidate

Prior authorization and coding: Prior authorization is requested for the referenced CPT procedure codes when applicable (e.g., 64555, 64590, 76000, 64585, 64595, 95970, 95971, 95972) per payer rules

Listing of CPT codes is for reference; coverage determined by member benefit and clinical necessity; prior authorization required per payer policies

Policy coverage stance: ReActiv8 is considered unproven and not medically necessary due to insufficient evidence to determine efficacy; requests may be denied as not medically necessary

Policy stance: not medically necessary per OrthoNet

Step Therapy

Conservative therapy prerequisite — failed optimal medical management and non‑surgical candidacy required

Per the device indication, patients must have failed optimal medical management — including pain medications and physical therapy — prior to consideration of ReActiv8. The patient also must be not a candidate for spine surgery as part of selection for the device.

Failure of optimal medical management (including pain medications and physical therapy) is required.
Patient must not be a candidate for spine surgery.

Documentation, Authorization, and Denial Guidance

Prior Authorization

Obtain prior authorization for referenced CPTs

Prior authorization is required per payer policies when seeking coverage for implantation, generator insertion, fluoroscopy, revision/removal, and programming/analysis CPT services referenced by the manufacturer.

Example CPT codes listed for reference: 64555, 64590, 76000, 64585, 64595, 95970, 95971, 95972.
Coverage and prior authorization determined by member benefits and clinical necessity.

Documentation Required

Document multifidus dysfunction with clinical exam and testing

Document clinical evidence of multifidus dysfunction (for example, a positive prone instability test) and include imaging or physiological testing that confirms the dysfunction.

Clinical exam findings (e.g., positive prone instability test).
Low back imaging (e.g., MRI) or physiological testing confirming multifidus muscle dysfunction.

Denial Risk

Denial risk — device considered unproven

Requests for ReActiv8 will be denied as not medically necessary because the policy considers the device unproven with insufficient evidence to demonstrate improvement in net health outcomes.

Policy statement: ReActiv8 is considered unproven and not medically necessary for chronic mechanical low back pain due to multifidus dysfunction.

Procedure and Billing Codes

Procedure codes referenced by manufacturerCPT

64555	Percutaneous implantation of neurostimulator electrode array; peripheral nerve (excludes sacral nerve).
64590	Insertion or replacement of peripheral or gastric neurostimulator pulse generator or receiver, direct or inductive coupling.
76000	Fluoroscopy, up to one hour- professional component.
64585	Revision or removal of peripheral neurostimulator electrode array.
64595	Revision or removal of peripheral or gastric neurostimulator pulse generator or receiver.
95970	Analysis.
95971	Analysis w/simple programming.
95972	Analysis w/complex programming.

Therapy sessions — usage pattern (inv-05)

Prescribed daily useTwo 30-minute stimulation sessions daily

Session purposeRestore multifidus motor control and muscle function

Patient population for sessionsAdults with chronic mechanical low back pain associated with multifidus dysfunction who have failed therapy and are not candidates for spine surgery

Confirmation required before therapyClinical exam (e.g., positive prone instability test) and low back imaging (e.g., MRI) or physiological testing confirming multifidus dysfunction

Imaging / Physiological Confirmation

Note

Require imaging/physiological confirmation for patient selection

Patient selection requires imaging or physiological confirmation of multifidus muscle dysfunction to support consideration of the device.

Confirmatory evidence may include low back MRI or physiological testing demonstrating multifidus dysfunction.
Clinical exam (e.g., positive prone instability test) should corroborate imaging/physiological findings.

Procedure Frequency and Related Notes

Fluoroscopy (code 76000) referenced for implantation procedures (inv-14)

Referenced CPT code76000 — Fluoroscopy, up to one hour; professional component

Context of useReferenced by manufacturer for implantation procedures (device placement guidance)

Coding noteListing of the code is for reference and does not imply coverage — coverage determined by member benefit document

Key Definitions

Multifidus muscle dysfunction — definition and diagnostic clues (inv-11)

DefinitionClinical state in which dysfunction of the lumbar multifidus causes muscle weakness and spinal instability

Diagnostic cluesPositive prone instability test on clinical examination

Confirmatory testingLow back imaging (e.g., MRI) or physiological testing demonstrating multifidus dysfunction

Clinical significanceAssociated with chronic mechanical low back pain in patients who have failed optimal medical management

ReActiv8 system — device description (inv-12)

Device componentsImplanted pulse generator, two stimulation leads, four electrodes, and a handheld battery-operated patient activator

Stimulation targetBilateral stimulation of the L2 medial branch of the dorsal ramus (as it crosses the transverse process at L3)

Therapy goalRestore multifidus motor control and muscle function

Regulatory statusFDA premarket approval (PMA P190021, June 2020)

Device Background and Evidence Overview

The ReActiv8® restorative neurostimulation system is an implanted device intended to restore motor control of the lumbar multifidus muscles by delivering scheduled stimulation sessions. It is designed for adults with chronic mechanical low back pain associated with multifidus dysfunction who have failed other therapies and are not candidates for spine surgery; the system delivers two 30‑minute daily stimulation sessions and targets motor branches of the dorsal ramus to elicit multifidus muscle activation.

Items Not Covered

The ReActiv8 system for chronic mechanical low back pain associated with multifidus dysfunction is not covered. It is considered unproven and not medically necessary due to insufficient evidence of benefit, and requests for this device will be denied on that basis.

Policy Summary

Payerorthonet

PolicyReActiv8 Implantable Neurostimulation System — Coverage Criteria

Policy CodePolicy N/A

Change TypeTechnical — no material change

Effective DateJun 4, 2026

Last ReviewJun 4, 2026

Next Review DateN/A

Key ActionObtain and document imaging or physiological confirmation of multifidus dysfunction and prior failure of optimal medical management before requesting coverage.

SourceLink

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