DraftBlue Cross Blue Shield - Rhode IslandPolicy N/A

Navigated Transcranial Magnetic Stimulation (nTMS) Coverage Policy

This policy governs coverage determinations for navigated transcranial magnetic stimulation used for preoperative cortical mapping (motor and language) and other purposes, affecting Blue Cross Blue Shield of Rhode Island members and providers.

Policy Summary

PayerBlue Cross Blue Shield - Rhode Island

PolicyNavigated Transcranial Magnetic Stimulation (nTMS) Coverage Policy

Policy CodePolicy N/A

Change TypeNo material change

Effective Date00 | 0012000

Next Review Date

Key ActionVerify member benefits and, if billing, submit claims using unlisted CPT 64999 with supporting documentation per the member's benefit booklet.

SourceLink

POLICY UPDATE CHANGES

No material clinical or coverage changes in this revision.

not coveredMedicare stance

not medically necessaryCommercial stance

64999Claim coding

insufficientEvidence

FDA clearedDevice clearance

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Coverage Determination

Not Covered / Not Medically Necessary

Coverage determination

BCBSRI coverage stance: Navigated transcranial magnetic stimulation (nTMS) is considered not covered for Medicare members and not medically necessary for commercial members for all purposes, including preoperative localization of eloquent brain areas (eg, motor or language) for surgical planning.

Rationale: evidence is insufficient to determine effects on health outcomes; studies show variable accuracy versus direct cortical stimulation and mixed outcome benefits.

Navigated transcranial magnetic stimulation (nTMS) is not covered / not medically necessary for all purposes. This determination applies to the use of nTMS for preoperative localization of eloquent brain areas (for example, motor or language regions) and for any other intended clinical purpose, because the available evidence is insufficient to determine its effects on health outcomes.

For Commercial Products, navigated transcranial magnetic stimulation (nTMS) is considered not medically necessary for all purposes, including but not limited to preoperative evaluation to localize eloquent cortical areas for surgical planning, because the evidence is insufficient to determine effects on health outcomes.

For BlueCHiP for Medicare, navigated transcranial magnetic stimulation (nTMS) is considered not covered for all purposes, including but not limited to preoperative evaluation to localize eloquent cortical areas when planning brain surgery; the evidence is insufficient to determine the effects of the technology on health outcomes.

Coding and Billing Codes

Unlisted procedure code for nTMSCPT

64999

Unlisted procedure, nervous system

Coding requirement — Use unlisted CPT 64999 for claims for this service

Required CPT codeUse unlisted procedure code 64999 (Unlisted procedure, nervous system) for claims for navigated transcranial magnetic stimulation

ReasonThere is no specific CPT code for nTMS; claims must be filed with unlisted code 64999

Billing noteSubmit supporting documentation per the member's benefit booklet or Evidence of Coverage when billing with 64999

Provider Requirements and Billing Guidance

Prior Authorization

Prior authorization not applicable. Verify member benefits and coverage terms in the Benefit Booklet / Evidence of Coverage or Subscriber Agreement before providing services.

Prior authorization: Not applicable

Denial Risk

Coverage Denial Risk

Claims may be denied. BlueCHiP for Medicare: navigated transcranial magnetic stimulation (nTMS) is considered not covered for all purposes. Commercial products: nTMS is considered not medically necessary for all purposes. Verify coverage before providing services to avoid claim denials.

BlueCHiP for Medicare: not covered for all purposes
Commercial products: not medically necessary for all purposes

Clinical Background

Surgical resection of brain tumors aims to remove the lesion while preserving essential neurologic function. Intraoperative direct cortical stimulation (DCS) is the operative gold standard for identifying motor and language cortex because it tests cortical function directly. Noninvasive preoperative mapping techniques, including functional MRI, MEG, and navigated transcranial magnetic stimulation (nTMS), are used to inform surgical planning but have variable accuracy compared with DCS and have not consistently demonstrated improved health outcomes.

Key Definitions

Navigated transcranial magnetic stimulation (nTMS)

DefinitionNavigated transcranial magnetic stimulation (nTMS) is a noninvasive imaging method that delivers transcranial magnetic pulses with navigation registered to the patient’s MRI to identify cortical areas involved in motor or language function

Technique detailsTranscranial magnetic pulses are delivered while a navigation system calculates the strength, location, and direction of the stimulating magnetic field and registers pulse locations to the patient’s MRI

Motor mappingSurface electromyography (EMG) electrodes are attached to limb muscles; stimulation-induced EMG responses indicate cortical areas involved in specific muscle movements

Language mappingAreas where magnetic stimulation disrupts speech tasks are used to identify regions involved in language function

Role compared with other methodsnTMS is a noninvasive alternative to direct cortical stimulation (DCS) and other noninvasive techniques (fMRI, MEG) for presurgical identification of motor and language cortical areas; also investigated with DTI tractography for subcortical mapping