Summary & Overview

CPT 0998T: MRI-Guided Magnetic Stimulation to Precuneus

CPT code 0998T describes a daily, MRI-guided magnetic stimulation therapy session targeted to the precuneus and delivered as part of a personalized treatment plan. Nationally, this code represents an emerging image-guided neuromodulation intervention that can affect coverage, coding practices, and access to advanced neurotherapeutic services. Its specificity for MRI-based neuronavigation and a defined anatomic target distinguishes it from more general transcranial magnetic stimulation codes.

Key payers addressed in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a synthesis of how payers commonly approach coverage for advanced neuromodulation services, what benchmark reimbursement profiles look like where available, and salient policy updates affecting image-guided brain stimulation. The publication also provides clinical context explaining the treatment modality, typical sites of service, and operational considerations for delivering MRI-guided, target-specific magnetic stimulation.

The content is organized to help health system administrators, coding professionals, and policy analysts understand coding implications, payer engagement priorities, and the clinical framing used in reimbursement discussions for MRI-guided precuneus stimulation.

AetnaBlue Cross Blue ShieldCigna HealthUnitedHealthcareMedicare0998TCPTmagnetic stimulationneuronavigationneuromodulationMRI-guided therapyprecuneusoutpatient procedures

Billing Code Overview

CPT code 0998T describes a daily session of magnetic stimulation therapy targeted to the precuneus, delivered under MRI-guided neuronavigation and including management of the session according to a personalized treatment plan. The procedure is a therapeutic neuromodulation service that uses focused magnetic stimulation to a specific brain target identified and navigated with MRI.

Service type: Image-guided therapeutic repetitive magnetic stimulation session
Typical site of service: Outpatient imaging or procedure suite within a hospital outpatient department, ambulatory surgery center, or specialized neuromodulation clinic

Data not available in the input.

Clinical & Coding Specifications

Clinical Context

A 42-year-old patient with treatment-resistant major depressive disorder is referred for MRI-guided repetitive magnetic stimulation targeting the precuneus as part of a personalized neuromodulation plan. The multidisciplinary workflow begins with psychiatric evaluation and neuroimaging (MRI) to identify the precuneus target and create a neuronavigation plan. On treatment days the patient arrives to an outpatient neuromodulation clinic or hospital outpatient department, is screened for MRI-compatible implants and seizure risk, and has the neuronavigation system registered to their MRI. The provider delivers a daily session of magnetic stimulation using MRI–guided neuronavigation to precisely localize the precuneus target, monitors patient response, adjusts stimulation parameters per the individualized plan, and documents treatment delivery and any immediate adverse effects. Typical sites of service include outpatient neuromodulation centers, hospital outpatient departments, and specialized psychiatry clinics equipped with MRI-guided neuronavigation.

Coding Specifications

Modifier	Description	When to Use
`25`	Significant, separately identifiable evaluation and management service by the same physician on the same day of the procedure	Use when a separate E/M visit is performed and clearly documented on the same day as the MRI-guided magnetic stimulation session.

Taxonomy Code	Specialty	Notes
`2084P0800X`	Neurology	Neurologists experienced in neuromodulation may perform and oversee MRI-guided magnetic stimulation sessions.
`2084N0400X`	Psychiatry	Psychiatrists specializing in brain stimulation therapies commonly manage treatment plans and deliver sessions.
`2085S0112X`	Physical Medicine & Rehabilitation	PM&R physicians with neuromodulation expertise may be involved in treatment delivery and functional outcome assessment.
`207L00000X`	Radiology (Diagnostic)	Diagnostic radiologists support MRI acquisition and image guidance protocols used for neuronavigation.
`332B00000X`	Neurophysiology	Clinical neurophysiologists or EEG specialists may be involved when concurrent physiologic monitoring is required.

ICD-10 Code	Description	Clinical Relevance
`F33.2`	Major depressive disorder, recurrent severe without psychotic features	Common indication for neuromodulation when patients are treatment-resistant and targeted precuneus stimulation is considered.
`F32.3`	Major depressive disorder, single episode severe with psychotic features	Severe depressive episodes may prompt consideration of advanced brain stimulation therapies when medication and ECT are contraindicated or ineffective.
`F06.31`	Depressive disorder due to known physiological condition	Secondary depression may be evaluated for neuromodulation in select cases depending on etiology and safety considerations.
`G47.00`	Insomnia, unspecified	Comorbid sleep disturbance frequently present in patients with depressive disorders and monitored during treatment.
`F41.1`	Generalized anxiety disorder	Anxiety disorders commonly co-occur and may be part of the clinical assessment and outcome tracking for neuromodulation therapy.

Related CPT Codes

CPT Code	Description	Relationship to This Procedure
`70551`	Magnetic resonance imaging, brain; without contrast material	Pre-procedure MRI used to localize the precuneus target for MRI-guided neuronavigation.
`77046`	Magnetic resonance guidance for placement of radiation therapy fields or for verification; cranial stereotactic localization	Related imaging guidance and stereotactic localization procedures supportive of precise targeting (used in planning/neuronavigation workflows).
`95970`	Electronic analysis of implanted neurostimulator pulse generator system (e.g., spinal cord, peripheral nerve) for programming and check — initial programming only	Used when device programming or compatibility checks are required in cases with implanted stimulators or when device interaction must be assessed (workflow adjunct).
`99213`	Office or other outpatient visit for the evaluation and management of an established patient, typically 15 minutes	Common same-day E/M code when a separately identifiable psychiatric or medical evaluation is performed in conjunction with the treatment session.
`90901`	Biofeedback training, perineal muscle, any modality — initial hour	Represents adjunctive neuromodulatory or rehabilitative services that may be used in multidisciplinary care (selected as an example of concurrent therapeutic modalities).

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