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    OpenPayerBilling CodesStereotaxis Procedures on the Skull, Meninges, and BrainCPT cpt-61790-stereotactic-percutaneous-gasserian-ganglion-lesioning
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    CPT 61790: Stereotactic Percutaneous Gasserian Ganglion Lesioning

    Medicare pays $903 on average nationally for this procedure.

    CPT code 61790 describes a stereotactic percutaneous lesioning procedure in which a nerve-destroying agent is administered to the gasserian ganglion to relieve pain along branches of the fifth cranial nerve; this is a neurosurgical pain management service typically performed in an operating room or procedure suite using stereotactic guidance to locate the target within the skull.

    For related coverage guidance, see recent payer policy updates: Artificial Cervical Intervertebral Disc, Lumbar Microdiscectomy, Lumbar Decompression.

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    Table of contents

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    Clinical & Coding Specifications

    Clinical Context

    A 68-year-old patient with medically refractory trigeminal neuralgia presents to a neurosurgery service for percutaneous stereotactic radiofrequency lesioning of the gasserian (trigeminal) ganglion. The patient has a history of lancinating, unilateral facial pain in the distribution of the right maxillary and mandibular branches (V2–V3) that has failed optimized medical therapy including carbamazepine and baclofen and causes significant functional impairment. Pre-procedure evaluation includes focused neurologic exam, medication review, informed consent, and stereotactic imaging (CT or MRI) for trajectory planning.

    On the day of service the patient is brought to a procedure suite or ambulatory surgery center. Conscious sedation or general anesthesia is administered per institutional protocol. Using stereotactic coordinates based on pre-procedure imaging, the surgeon advances a percutaneous cannula to the foramen ovale and places a radiofrequency/destructive agent needle into the gasserian ganglion. Intra-procedural neurologic testing (sensory stimulation) confirms correct localization prior to lesioning. The provider creates a thermocoagulation lesion to ablate pain fibers. Post-procedure, the patient is recovered in PACU with neurologic monitoring and discharged home the same day or admitted if complications occur. Follow-up includes pain assessment, wound check, and medication adjustments.

    Related CPT Codes

    CPT CodeDescriptionRelationship to This Procedure
    61790Stereotactic percutaneous radiofrequency/chemical lesioning of the gasserian (trigeminal) ganglionPrimary procedure: percutaneous stereotactic lesioning to relieve trigeminal neuralgia pain.
    63620Chemodenervation of peripheral nerve or ganglion (note: generic—use specific code when applicable)Related neuroablative or chemodenervation techniques sometimes considered in facial pain management; may represent alternative approaches.
    64450Injection(s), anesthetic agent and/or steroid, trigeminal nerve, any divisionDiagnostic or therapeutic trigeminal nerve block performed prior to definitive lesioning for localization or temporary relief.
    73040Radiologic examination, skull; 1 viewImaging such as skull radiographs or stereotactic localization images obtained to plan trajectory.
    70553MRI brain with contrast and without contrastPre-procedural imaging used for stereotactic planning to identify anatomy and secondary causes of trigeminal neuralgia.
    99152Moderate sedation services provided by the same physician or other qualified health care professionalModerate sedation provided during the procedure when the surgeon or anesthesiologist bills for sedation services.

    Related Modifiers

    11 rows

    ModifierDescriptionWhen to Use
    22Modifier –22 (Increased Procedural Services) is used when a reported procedure is substantially more extensive than normally required. The CPT Manual and CMS state it may be appended only when the…- When to use: Append modifier -22 to a procedural CPT code when the service performed is substantially more extensive than the usual service described by that code — i.e., the procedure required…
    23Modifier -23 (Unusual Anesthesia) is used on anesthesia service CPT codes when a procedure that normally requires no anesthesia or only local anesthesia must be performed under general anesthesia…- Use modifier -23 only on anesthesia CPT codes (00100–01999) when a procedure that normally requires no anesthesia or only local anesthesia must be performed under general anesthesia because of…
    26Modifier 26 (Professional Component) identifies and bills only the professional portion of a split service — the physician’s interpretation, report, and medical judgment — when the technical…- Use CPT Modifier -26 when you are billing only the professional component (PC) of a split‑bill eligible service—i.e., you performed the physician interpretation, medical judgment and prepared a…
    50Modifier –50 (Bilateral Procedure) is appended to a CPT code when an identical procedure is performed on paired anatomical structures during the same operative session. The AMA states to add…- Use modifier -50 when the same CPT surgical, diagnostic, or radiology procedure is performed on paired anatomical structures (both sides of the body) during the same operative/session by the same…
    52Modifier ‑52 (Reduced Services) indicates that a service or procedure was partially reduced or omitted at the provider’s discretion, allowing reporting of the basic procedure number with a qualifier…- Use modifier -52 when a physician or qualified health professional electively reduces or omits part of a procedure or service (for example, performing fewer required views or omitting a portion of…
    53Modifier 53 (Discontinued Procedure) signals that a surgical or diagnostic service was begun by the physician but terminated because of extenuating circumstances that threatened the patient’s…- Use modifier -53 when a physician/qualified healthcare professional has started a surgical or diagnostic procedure (e.g., anesthesia administered, incision or scope insertion) and then discontinues…
    62Modifier 62 indicates that two surgeons function as co‑surgeons, each performing distinct parts of the same primary surgical procedure. It is appended to the primary procedure code (and any…- Use modifier -62 when two surgeons act as co‑surgeons (both primary surgeons) on a single definitive primary procedure, each performing distinct parts of the same surgical procedure (append -62 to…
    78CPT modifier -78 indicates an unplanned, related return to the operating or procedure room by the same provider during the global postoperative period. It is appended when treatment for a…- Use modifier -78 when an unplanned, related complication during the original procedure’s global postoperative period requires the patient to return to a formal operating or procedure room and the…
    79Modifier 79 indicates a surgical procedure performed during the postoperative global period of a prior surgery that is unrelated to the original procedure. Per AMA/CPT and CMS guidance, it is…- Use modifier 79 when the same physician (or same‑specialty physician in the same group) performs a surgical procedure during the postoperative global period of a prior surgery and the new procedure…
    80CPT® Modifier 80 (Assistant Surgeon) is appended to a surgical CPT code when a physician (MD or DO) provides full, continuous assistance throughout the operative procedure. It is intended only for…- Use CPT Modifier -80 when a physician (MD or DO) serves as an assistant surgeon and provides full, continuous assistance throughout the entire operative procedure; append -80 to the surgical CPT…

    Showing 1–10 of 11

    Related Provider Taxonomies

    8 rows

    Taxonomy CodeSpecialtyNotes
    207RI0001XClinical & Laboratory Immunology (Internal Medicine) PhysicianAn internal medicine physician who specializes in clinical and laboratory immunology disease management.
    207RH0000XHematology (Internal Medicine) PhysicianAn internist with additional training who specializes in diseases of the blood, spleen and lymph. This specialist treats conditions such as anemia, cl…
    2084P0800XPsychiatry PhysicianA Psychiatrist specializes in the prevention, diagnosis, and treatment of mental disorders, emotional disorders, psychotic disorders, mood disorders, …
    207K00000XAllergy & Immunology PhysicianAn allergist-immunologist is trained in evaluation, physical and laboratory diagnosis, and management of disorders involving the immune system. Select…
    2085R0205XRadiological Physics PhysicianA radiological physicist deals with the diagnostic and therapeutic applications of roentgen rays, gamma rays from sealed sources, ultrasonic radiation…
    246QC2700XCytotechnology Specialist/TechnologistTechnologists, Technicians & Other Technical Service Providers · Specialist/Technologist, Pathology
    163WN0800XNeuroscience Registered NurseNursing Service Providers · Registered Nurse
    207ZM0300XMedical Microbiology PhysicianA medical microbiologist is expert in the isolation and identification of microbial agents that cause infectious disease. Viruses, bacteria and fungi,…

    Related Payer Policy Updates

    Specialty: Neurology/Neurosurgery1 / 2

    7 rows

    PolicyPayerEffective Date
    Artificial Cervical Intervertebral Discuniverahealthcare2026-10-15
    Lumbar Microdiscectomyuniverahealthcare2026-10-15
    Lumbar Decompressionuniverahealthcare2026-10-15
    Nerve Fiber Density Testing (IENFD/ENFD) Coverage CriteriaOscar Health2026-10-01
    Biomarker Testing for Multiple Sclerosis and Related Neurologic DiseasesOscar Health2026-10-01
    Biochemical Markers of Alzheimer Disease and DementiaOscar Health2026-10-01
    Serum Testing For Evidence of Mild Traumatic Brain InjuryOscar Health2026-10-01

    Related Codes

    CPT-61715-MRI-GUIDED-FOCUSED-ULTRASOUND-BRAIN-ABLATION-STEREOTACTIC

    CPT 61715: MRI-Guided Focused Ultrasound Thermal Ablation of Brain Lesion

    CPT-61720-STEREOTACTIC-LESIONING-GLOBUS-PALLIDUS-THALAMUS

    CPT 61720: Stereotactic Lesion of Globus Pallidus or Thalamus

    CPT-61735-CINGULOTOMY-PSYCHOSURGICAL-PROCEDURE

    CPT 61735: Cingulotomy Psychosurgical Procedure

    CPT-61736-LASER-INTERSTITIAL-THERMAL-THERAPY-SINGLE-TRAJECTORY-BRAIN-LESION

    CPT 61736: Laser Interstitial Thermal Therapy for Simple Brain Lesion

    CPT-61737-LASER-INTERSTITIAL-THERMAL-THERAPY-MULTIPLE-OR-COMPLEX-BRAIN-LESIONS

    CPT 61737: Laser Interstitial Thermal Therapy for Multiple/Complex Brain Lesions

    CPT-61750-STEREOTACTIC-INTRACRANIAL-LESION-BIOPSY-EXCISION

    CPT 61750: Image-Guided Craniotomy for Intracranial Lesion Biopsy/Excision

    CPT-61751-IMAGE-GUIDED-INTRACRANIAL-LESION-BIOPSY-OR-EXCISION

    CPT 61751: Craniotomy for Image-Guided Intracranial Lesion Biopsy/Excision

    CPT-61760-DEPTH-ELECTRODE-IMPLANTATION-FOR-EPILEPSY-LOCALIZATION

    CPT 61760: Stereotactic Depth Electrode Implantation for Epilepsy Mapping

    CPT-61770-STEREOTACTIC-INTRACRANIAL-RADIATION-CATHETER-PLACEMENT

    CPT 61770: Image-Guided Catheter Placement for Brain Brachytherapy

    CPT-61781-INTRADURAL-CRANIAL-IMAGE-GUIDANCE-NAVIGATION

    CPT 61781: Image-Guided Intradural Cranial Navigation

    Showing 1–10 of 13

    Frequently Asked Questions

    References

    1. 1.CPT® Codes and Descriptions. AAPC. Retrieved Aug 11, 2026.Maintains the CPT code set's official descriptions and guidelines, licensed from the American Medical Association, used as the definitional source for CPT codes on this page.
    2. 2.HCPCS Quarterly Update. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's quarterly release of HCPCS Level II codes and short/long descriptors, the source for HCPCS code definitions and update history.
    3. 3.ICD-10-CM Full Code List. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's complete ICD-10-CM diagnosis code list, used to cross-reference diagnosis codes associated with this procedure or service.
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