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    v1.0.30
    OpenPayerBilling CodesVestibular Function Tests, Without Electrical RecordingCPT cpt-92533-caloric-vestibular-test
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    CPT 92533: Caloric Vestibular Test for Nystagmus

    CPT code 92533 describes the caloric vestibular test, a diagnostic vestibular function service that irrigates warm or cold water or air into the ear to provoke nystagmus and identify disturbances of the vestibular system; the service type is vestibular function testing and the typical site of service is an outpatient clinic or specialized balance/vestibular laboratory in which objective vestibular assessment is performed.

    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 54-year-old patient presents to a hospital outpatient audiology/vestibular clinic with several weeks of intermittent rotational dizziness, nausea, and imbalance that worsens with head movement. The clinician documents a focused history including onset, triggers, duration, ear pain or drainage, recent infections, neurologic symptoms, and current medications. Physical examination includes otoscopy, cranial nerve testing, and bedside vestibular maneuvers. To evaluate peripheral vestibular function and lateralize a suspected unilateral vestibular hypofunction, the audiologist or otolaryngologist schedules a caloric vestibular test (92533).

    On the day of service the patient is positioned supine with the head elevated 30 degrees. Each ear is irrigated sequentially with warm and cold water (or air) per protocol while eye movements are recorded to identify nystagmus. Results are interpreted to determine asymmetry between the right and left horizontal semicircular canals, contributing diagnostic data for diagnoses such as vestibular neuritis, labyrinthitis, Ménière disease, or other peripheral vestibulopathies. Reportable findings and recommendations are documented in the medical record and communicated to referring providers.

    Related CPT Codes

    CPT CodeDescriptionRelationship to This Procedure
    92557Comprehensive audiometry threshold evaluation and speech recognitionOften performed before or after vestibular testing to assess hearing status that may be associated with vestibular disorders.
    92541Positional nystagmus test (e.g., Dix-Hallpike)Performed at bedside to evaluate positional vertigo and often precedes caloric testing as part of a vestibular workup.
    92601Diagnostic analysis of central auditory function (includes auditory-evoked potentials)May be ordered when central causes of dizziness are suspected; complements vestibular testing.
    92537Comprehensive computerized dynamic posturographyProvides objective balance assessment and is commonly used alongside caloric testing to evaluate functional balance impairments.
    92532Dynamic posturography (limited)A related balance assessment that can be part of the same diagnostic battery.

    Related Modifiers

    9 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…
    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…
    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…
    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…
    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…

    Related Provider Taxonomies

    8 rows

    Taxonomy Code
    207K00000X
    2084P0802X
    363L00000X
    103TC2200X
    225700000X
    171WV0202X
    207ZB0001X
    103GC0700X

    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-92531-VESTIBULAR-NYSTAGMUS-OBSERVATION

    CPT 92531: Observation of Ocular Nystagmus for Vestibular Assessment

    CPT-92532-POSITIONAL-NYSTAGMUS-EXAMINATION-VESTIBULAR-ASSESSMENT

    CPT 92532: Positional Eye Movement Exam for Dizziness

    CPT-92534-OCULAR-MOTOR-ASSESSMENT-NYSTAGMUS-EVALUATION

    CPT 92534: Oculomotor Evaluation with Object Tracking

    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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