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    OpenPayerBilling CodesSleep Medicine Testing and Long-term EEG ProceduresCPT cpt-95709-prolonged-ambulatory-eeg-12-to-26-hours
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    CPT 95709: Ambulatory EEG, 12–26 Hours, No Video

    CPT code 95709 describes an ambulatory electroencephalography (EEG) study with intermittent monitoring and maintenance lasting 12 to 26 hours, during which no video recording is made and an EEG technologist reviews the data and provides a technical description; service type is ambulatory EEG (extended-duration, intermittent monitoring) and the typical site of service is an outpatient/ambulatory setting or hospital-based EEG lab.

    For related coverage guidance, see recent payer policy updates: Clinical Review Criteria Intraoperative Neurophysiological Monitoring (IONM), Remote Electrical Neuromodulation for Migraines (i.e., Nerivio®), Lumbar Microdiscectomy.

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    Clinical & Coding Specifications

    Clinical Context

    A typical patient is a 28-year-old adult referred to the epilepsy monitoring service for ambulatory electroencephalography (EEG) after outpatient evaluation for recurrent unprovoked episodes of altered awareness and suspected focal seizures. The neurologist orders a prolonged ambulatory EEG lasting between 12 and 26 hours to capture interictal epileptiform discharges and correlate events reported by the patient. The study is performed in an outpatient neurodiagnostic center or hospital EEG laboratory without continuous video recording. A certified EEG technologist applies a standard 10–20 electrode montage, provides intermittent monitoring and device maintenance during the wear time, and instructs the patient on event button use and activity log keeping. After completion, the technologist performs a technical review and documents signal quality, electrode issues, and pertinent technical events; a board-certified neurologist reviews and interprets the recording and provides a clinical report. Typical sites of service include outpatient neurodiagnostic centers, ambulatory EEG services within hospitals, or freestanding sleep/neurodiagnostic clinics.

    Related CPT Codes

    CPT CodeDescriptionRelationship to This Procedure
    95816Electroencephalogram (EEG); continuous (overnight) recording, simultaneous video and EEG, interpretable, typically >12 hoursPerformed when video correlation is required; differs from 95709 by inclusion of video.
    95812Electroencephalogram (EEG); continuous recording, simultaneous video and EEG, up to 72 hours, technical and clinical interpretationUsed for longer inpatient video-EEG monitoring when event capture and video correlation are necessary.
    95957EEG monitoring for seizure localization, multiple-channel, prolonged (inpatient)Used in extended inpatient monitoring for pre-surgical evaluation; more resource-intensive than ambulatory EEG.
    95813EEG; routine awake and drowsy, 30–60 minutesCommon initial outpatient EEG prior to deciding on prolonged ambulatory monitoring.
    95950Extracranial recording service, not otherwise specifiedUsed for specialized neurophysiology services that may supplement ambulatory EEG in complex cases.

    Related Modifiers

    8 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…
    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…
    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…
    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…
    76Modifier -76, Repeat Procedure or Service by Same Physician or Other Qualified Health Care Professional, is appended when the same provider performs an identical, medically necessary procedure or…- Use modifier -76 when the same physician or other qualified health care professional performs an identical procedure or service a second (or subsequent) time on the same date of service and the…
    77Modifier 77 indicates that a previously performed procedure or service was legitimately repeated by a different physician or other qualified health care professional. The AMA’s CPT definition…- Use modifier 77 when a basic procedure or service already performed is repeated by a different physician or other qualified health care professional (for example, a second provider independently…
    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…

    Related Provider Taxonomies

    8 rows

    Taxonomy Code
    2084P0800X
    2084N0400X
    367A00000X
    207RG0100X
    207L00000X
    2081P2900X
    2471M2300X
    207VG0400X

    Related ICD-10-CM Codes

    24 rows

    ICD-10-CM CodeDescription
    F20.9Schizophrenia, unspecified
    F44.5Conversion disorder with seizures or convulsions
    G21.9Secondary parkinsonism, unspecified
    G25.0Essential tremor
    G25.89Other specified extrapyramidal and movement disorders
    G31.84Mild cognitive impairment of uncertain or unknown etiology
    G40.101Localization-related (focal) (partial) symptomatic epilepsy and epileptic syndromes with simple partial seizures, not intractable, with status epilepticus
    G40.219Localization-related (focal) (partial) symptomatic epilepsy and epileptic syndromes with complex partial seizures, intractable, without status epilepticus
    G40.311Generalized idiopathic epilepsy and epileptic syndromes, intractable, with status epilepticus
    G40.411Other generalized epilepsy and epileptic syndromes, intractable, with status epilepticus

    Showing 1–10 of 24

    Related Payer Policy Updates

    Specialty: Neurology/Neurosurgery1 / 2

    10 rows

    PolicyPayerEffective Date
    Clinical Review Criteria Intraoperative Neurophysiological Monitoring (IONM)Kaiser Permanente2027-01-01
    Remote Electrical Neuromodulation for Migraines (i.e., Nerivio®)bcbsvermont2026-11-01
    Lumbar Microdiscectomyuniverahealthcare2026-10-15
    Artificial Cervical Intervertebral Discuniverahealthcare2026-10-15
    Lumbar Decompressionuniverahealthcare2026-10-15
    Responsive Neurostimulation for Focal EpilepsyPremera Bluecross2026-10-14
    Intraoperative MonitoringProvidence Health Plan2026-10-01
    Intraoperative MonitoringProvidence Health Plan2026-10-01
    High-Intensity Focused UltrasoundMass General Brigham Health Plan2026-10-01
    Vagal Nerve StimulationAmbetter Nevada2026-10-01

    Related Codes

    CPT-95705-UNMONITORED-EEG-2-TO-12-HOURS

    CPT 95705: Unmonitored Electroencephalography, 2–12 Hours

    CPT-95706-EXTENDED-EEG-MONITORING-2-TO-12-HOURS

    CPT 95706: EEG, 2–12 Hours, Intermittent Monitoring

    CPT-95707-EXTENDED-EEG-MONITORING-2-TO-12-HOURS

    CPT 95707: Ambulatory EEG, Continuous Monitoring 2–12 Hours

    CPT-95708-UNMONITORED-AMBULATORY-EEG-12-26-HOURS

    CPT 95708: Unmonitored EEG, 12–26 Hours

    CPT-95710-CONTINUOUS-EEG-MONITORING-NO-VIDEO

    CPT 95710: Continuous EEG Monitoring, Technologist Technical Review

    CPT-95711-UNMONITORED-EEG-2-TO-12-HOUR-VIDEO-TECHNICAL-REVIEW

    CPT 95711: Unmonitored EEG with Video, 2–12 Hours

    CPT-95712-EXTENDED-VIDEO-EEG-2-12-HOUR-MONITORING

    CPT 95712: Intermittent Video EEG Monitoring, 2–12 Hours

    CPT-95713-PROLONGED-EEG-WITH-VIDEO-2-TO-12-HOURS

    CPT 95713: Video Electroencephalography, 2–12 Hour Continuous Monitoring

    CPT-95714-UNMONITORED-EEG-12-TO-26-HOURS-WITH-VIDEO

    CPT 95714: Unmonitored EEG With Video, 12–26 Hours

    CPT-95715-PROLONGED-VIDEO-EEG-12-26-HOURS

    CPT 95715: Long‑term Video Electroencephalography, 12–26 Hours

    Showing 1–10 of 29

    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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