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    v1.0.28
    OpenPayerBilling CodesProcedures / Professional ServicesHCPCS hcpcs-g0453-remote-continuous-intraoperative-neurophysiology-monitoring-15min
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    HCPCS G0453: Continuous Intraoperative Neurophysiology Monitoring

    Medicare pays $28 on average nationally for this procedure.

    HCPCS Level II code G0453 reports continuous intraoperative neurophysiology monitoring provided remotely or from outside the operating room, billed per patient for each 15-minute interval when attention is directed exclusively to one patient; service type: remote continuous intraoperative neurophysiological monitoring; typical site of service: monitoring performed outside the operating room (remote or nearby) during a surgical procedure.

    For related coverage guidance, see recent payer policy updates: Esophagogastroduodenoscopy (EGD) Coverage Policy, Magnetic Sphincter Augmentation for the Treatment of Gastroesophageal Reflux Disease (GERD), Fecal Analysis in the Diagnosis of Intestinal Dysbiosis and Fecal Microbiota Transplant Testing.

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    Table of contents

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    • Billing CodesCPT, HCPCS, DRG & more
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    Clinical & Coding Specifications

    Clinical Context

    A typical patient scenario involves an adult undergoing a high-risk neurosurgical or spine procedure where real-time neurophysiologic feedback is required to reduce risk of neurologic injury. Example: a 58-year-old patient with multilevel cervical spondylotic myelopathy undergoing anterior cervical discectomy and fusion with instrumentation. Continuous intraoperative neurophysiology monitoring (IONM) is performed by a remote/nearby board-certified neurophysiologist and an on-site IONM technologist. The monitoring team continuously reviews somatosensory evoked potentials (SSEPs), motor evoked potentials (MEPs), and electromyography (EMG) during critical portions of the case (decompression, instrumentation, and fusion). The remote neurophysiologist provides directed attention exclusively to this patient, documents baseline signals, alerts the surgical team to significant changes, and documents interventions and signal recovery. Billing is reported per 15-minute increments using G0453 in addition to the primary surgical procedure code. Typical workflow: preoperative planning and baseline testing, initiation of continuous monitoring at induction of anesthesia, ongoing interpretation and communication during surgical milestones, and post-operative summary documentation.

    Related CPT Codes

    CPT CodeDescriptionRelationship to This Procedure
    95886Needle electromyography; during surgery (when performed for monitoring purposes)Performed intraoperatively by technologists or physicians to detect muscle responses and nerve root function; commonly used alongside continuous monitoring.
    95940Intraoperative neurophysiology monitoring; interpretation and report, per hour (list separately in addition to primary procedure)Alternative or adjunct billing code used by some providers for recorded interpretation time; relates as an hourly counterpart to G0453.
    95820Electromyography, needle, 1 extremity, with nerve conduction studies (NCS)Preoperative or intraoperative baseline studies may be performed to complement continuous monitoring during surgery.
    95937Intraoperative neurophysiology monitoring; supervision and interpretation, one hour (remote)Used for professional interpretation of IONM on an hourly basis and may be billed in parallel when payer policies differ from G0453.
    95938Intraoperative neurophysiology monitoring; supervision and interpretation, each additional hour (remote)Billed for additional hours of interpretation beyond the initial hour; complements time-based billing for prolonged cases.

    Related Modifiers

    9 rows

    ModifierDescriptionWhen to Use
    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…
    59Modifier 59 indicates a distinct procedural service when two procedures that are not normally billed together are clinically and procedurally separate. The CPT definition (as reiterated by CMS)…- Use modifier -59 to report a distinct procedural service when documentation supports that the procedure reported is not normally billed together with another service on the same day because of a…
    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…
    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…
    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…
    82Modifier 82 is appended to a surgical CPT code to indicate that an attending physician acted as an assistant because a qualified resident surgeon was unavailable. In teaching hospitals it documents…- When to use: Append modifier 82 in teaching-hospital settings to indicate a physician served as an assistant surgeon because a qualified resident surgeon was unavailable (includes situations where…
    25CPT modifier 25 indicates that on the same day as another procedure or service, the same physician or other qualified health care professional provided a significant, separately identifiable…- When to apply: Use modifier 25 only on an E/M code to indicate the same provider delivered a significant, separately identifiable E/M service on the same day as another procedure or service — i.e.,…

    Related Provider Taxonomies

    8 rows

    Taxonomy CodeSpecialtyNotes
    225100000XPhysical TherapistPhysical therapists (PTs) are licensed health care professionals who diagnose and treat individuals of all ages, from newborns to the very oldest, who…
    207L00000XAnesthesiology PhysicianAn anesthesiologist is trained to provide pain relief and maintenance, or restoration, of a stable condition during and immediately following an opera…
    2084N0400XNeurology PhysicianA Neurologist specializes in the diagnosis and treatment of diseases or impaired function of the brain, spinal cord, peripheral nerves, muscles, auton…
    208800000XUrology PhysicianA urologist manages benign and malignant medical and surgical disorders of the genitourinary system and the adrenal gland. This specialist has compreh…
    171100000XAcupuncturistAn acupuncturist is a person who performs ancient therapy for alleviation of pain, anesthesia and treatment of some diseases. Acupuncturists use long,…
    246ZB0500XBiochemistTechnologists, Technicians & Other Technical Service Providers · Specialist/Technologist, Other
    146D00000XPersonal Emergency Response AttendantIndividuals that are specially trained to assist patients living at home with urgent/emergent situations. These individuals must be able to perform C…
    171WV0202XVehicle Modifications ContractorA contractor who makes modifications to private vehicles to accommodate a health condition.

    Related ICD-10-CM Codes

    26 rows

    ICD-10-CM CodeDescription
    C71.9Malignant neoplasm of brain, unspecified
    D33.9Benign neoplasm of central nervous system, unspecified
    F44.4Conversion disorder with motor symptom or deficit
    F44.5Conversion disorder with seizures or convulsions
    G12.21Amyotrophic lateral sclerosis
    G13.0Paraneoplastic neuromyopathy and neuropathy
    G21.9Secondary parkinsonism, unspecified
    G40.901Epilepsy, unspecified, not intractable, with status epilepticus
    G40.909Epilepsy, unspecified, not intractable, without status epilepticus
    G43.909Migraine, unspecified, not intractable, without status migrainosus

    Showing 1–10 of 26

    Related Payer Policy Updates

    Specialty: Gastroenterology1 / 3

    7 rows

    PolicyPayerEffective Date
    Esophagogastroduodenoscopy (EGD) Coverage Policyevicore2026-11-05
    Magnetic Sphincter Augmentation for the Treatment of Gastroesophageal Reflux Disease (GERD)univerahealthcare2026-10-15
    Fecal Analysis in the Diagnosis of Intestinal Dysbiosis and Fecal Microbiota Transplant TestingOscar Health2026-10-01
    Serum Testing for Hepatic Fibrosis in the Evaluation and Monitoring of Chronic Liver DiseaseOscar Health2026-10-01
    Pancreatic Enzyme Testing for Acute PancreatitisOscar Health2026-10-01
    Helicobacter pylori TestingOscar Health2026-10-01
    Celiac Disease TestingOscar Health2026-10-01

    Related Codes

    HCPCS-G9490-HOME-ASSESSMENT-NON-HOMEBOUND

    HCPCS G9490: Home Visit Patient Assessment for Non-Homebound Beneficiary

    HCPCS-G0008-INFLUENZA-VACCINE-ADMINISTRATION

    HCPCS G0008: Administration of Influenza Virus Vaccine

    HCPCS-G0009-PNEUMOCOCCAL-VACCINE-ADMINISTRATION

    HCPCS G0009: Administration of Pneumococcal Vaccine

    HCPCS-G0010-HEPATITIS-B-VACCINE-ADMINISTRATION

    HCPCS G0010: Administration of Hepatitis B Vaccine

    HCPCS-G0011-PREP-COUNSELING-HIV-RISK-REDUCTION-ADHERENCE

    HCPCS G0011: Individual PrEP Counseling, HIV Risk Assessment

    HCPCS-G0012-PRE-EXPOSURE-PROPHYLAXIS-INJECTION-HIV-PREVENTION

    HCPCS G0012: Injection of PrEP Drug for HIV Prevention

    HCPCS-G0013-PREP-INDIVIDUAL-COUNSELING-HIV-RISK-REDUCTION

    HCPCS G0013: Individual PrEP Counseling by Clinical Staff

    HCPCS-G0017-PSYCHOTHERAPY-CRISIS-FIRST-60-MINUTES-NON-OFFICE

    HCPCS G0017: Psychotherapy for Crisis, First 60 Minutes

    HCPCS-G0018-PSYCHOTHERAPY-CRISIS-ADDITIONAL-30-MINUTES-NON-OFFICE

    HCPCS G0018: Psychotherapy for Crisis, Additional 30 Minutes

    HCPCS-G0019-COMMUNITY-HEALTH-INTEGRATION-SDOH-CARE-COORDINATION

    HCPCS G0019: Community Health Integration, Person-Centered Assessment

    Showing 1–10 of 1996

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    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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