Summary & Overview
CPT 95965: Magnetoencephalography (MEG) for Spontaneous Brain Activity
CPT code 95965 covers magnetoencephalography (MEG), a specialized neuroimaging procedure that records spontaneous magnetic activity of the brain. MEG is used to localize functional brain activity and inform diagnosis and treatment planning for conditions such as epilepsy, seizure disorders, and surgical mapping. Nationally, availability and utilization of MEG affect access to advanced neurodiagnostic care and can influence care pathways for complex neurological patients.
Key payers addressed in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise clinical context for the procedure, guidance on typical sites of service, and an outline of common billing considerations. The publication summarizes payer coverage patterns and reimbursement benchmarks where available, notes relevant policy or coding updates that affect billing practice, and highlights operational implications for facilities that offer MEG.
Intended readers will gain a clear understanding of what CPT code 95965 represents, how it is used clinically, and the payer landscape affecting access and billing for MEG services. Data not available in the input are identified explicitly elsewhere in the publication.
Billing Code Overview
CPT code 95965 describes magnetoencephalography (MEG), a noninvasive neuroimaging procedure that records and analyzes a patient’s spontaneous brain magnetic activity using specialized sensors. The service captures magnetic fields produced by neuronal electrical currents to evaluate brain function and localize neural activity.
Service type: Neurodiagnostic / Neuroimaging procedure
Typical site of service: Hospital outpatient department, specialized neurophysiology or imaging center, or academic medical center neurology department
Clinical & Coding Specifications
Clinical Context
A typical patient is a 28–65-year-old referred by neurology for evaluation of focal epilepsy that is resistant to medication. The patient presents to an outpatient neurodiagnostic center or an academic hospital neurophysiology lab for magnetoencephalography (MEG) recording. Prior to the study, the technologist reviews the indication, recent MRI and electroencephalography (EEG) findings, and confirms lack of ferromagnetic implants or contraindications. The patient is positioned supine with head stabilization in the MEG helmet; spontaneous brain magnetic activity is recorded for baseline resting state and, when indicated, during activation maneuvers (hyperventilation, photic stimulation) or task performance. The interpreting physician (neurologist or neurophysiologist) reviews raw sensor data, performs source localization and dipole modeling, and integrates results with MRI for surgical planning or localization of epileptogenic zones. Typical sites of service are an outpatient neurophysiology laboratory, hospital-based imaging center, or an academic medical center. Typical clinical workflow includes pre-procedure screening, MEG acquisition (often 60–120 minutes), post-processing/source analysis, physician interpretation, and a documented report to the referring provider addressing localization and concordance with other studies for management decisions such as epilepsy surgery candidacy or targeted electrode placement.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
26 | Professional component | When reporting only the interpreting physician's professional work separate from technical facility charge |
TC | Technical component | When reporting only facility or equipment use and technologist services for the MEG acquisition |
59 | Data not available in the input. | Data not available in the input. |
52 | Reduced services | When the MEG study is partially completed or abbreviated due to patient intolerance but yields reportable data |
53 | Discontinued procedure | When the MEG is started but terminated for patient safety or other unavoidable reasons without complete acquisition |
76 | Data not available in the input. | Data not available in the input. |
78 | Return to operating/procedure room for a related procedure following initial procedure (unplanned) | Rarely used; applicable if an additional MEG-related procedure is performed emergently after the initial session |
80 | Data not available in the input. | Data not available in the input. |
62 | Two surgeons | Data not typically applicable; reserved for operative procedures involving two surgeons |
| Taxonomy Code | Specialty | Notes |
|---|---|---|
| 2084P0800X | Neurology | Neurologists interpret MEG studies for epilepsy localization and functional mapping |
| 2084N0400X | Neurophysiology | Clinical neurophysiologists or EEG/MEG specialists perform interpretation and oversight |
| 207RH0000X | Radiology (Neuroradiology) | Neuroradiologists collaborate for MRI co-registration and imaging correlation |
| 1164P0400X | Clinical Laboratory (Neurodiagnostics) | Technologists and lab directors responsible for acquisition and quality control |
Related Diagnoses
| ICD-10 Code | Description | Clinical Relevance |
|---|---|---|
G40.901 | Epileptic seizure, unspecified, not intractable, without status epilepticus | MEG is used to localize epileptogenic foci in patients with seizures when EEG/MRI are inconclusive |
G40.811 | Epileptic seizure, focal onset, with impairment of consciousness, intractable | MEG assists in presurgical evaluation for focal intractable epilepsy |
G40.509 | Epileptic seizure, focal onset, unspecified, not intractable, without status epilepticus | Useful for localization when clinical semiology suggests focal onset seizures |
G93.49 | Other encephalopathy | MEG can assess abnormal cortical activity patterns in encephalopathy evaluation and research contexts |
R41.840 | Disorientation, unspecified | When cognitive mapping is needed, MEG can contribute functional localization relevant to disorientation or cognitive deficits |
Related CPT Codes
| CPT Code | Description | Relationship to This Procedure |
|---|---|---|
95812 | Electroencephalogram (EEG); routine with recording of awake and drowsy states, 20-40 minutes | Often performed before or alongside MEG to provide complementary electrical data for localization |
70553 | Magnetic resonance imaging, brain (including brainstem); with and without contrast material | MRI is used for anatomical co-registration and source localization with MEG results |
95970 | Magnetoencephalography (MEG) with invasive or noninvasive localization, other specified technique | Ancillary or alternative MEG-related procedure codes that may be used for different MEG services or extended localization studies |
92540 | Electrocochleography and related auditory evoked potentials | When MEG is used for auditory cortex functional mapping, auditory evoked potential testing may be performed in conjunction |
92626 | Assessment of central auditory function, brief | Supplemental functional testing in pre-surgical mapping workflows |