Find policies, billing codes, payers, states, and providers
CPT 92538: Caloric Vestibular Test (Monothermal)
CPT code 92538 represents a caloric vestibular test, a diagnostic procedure that irrigates each ear with warm or cool water (monothermal) while observing eye movements to assess vestibular system function. This test is a core component of balance and dizziness evaluation nationally, informing diagnosis of unilateral or bilateral vestibular hypofunction and guiding downstream management.
Key payers discussed include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise clinical overview, typical service settings, and the payer landscape relevant to coverage and claims processing for vestibular function testing.
The publication provides benchmarks for utilization and reimbursement patterns where available, summarizes policy considerations that affect access to vestibular diagnostic testing, and outlines clinical context for when a caloric vestibular test is used versus other vestibular assessments. It also highlights common billing considerations and documentation needs that affect claim adjudication. Data not provided in the input are noted as unavailable.
Customize your policy alerts
Sign up for cpt 92538 policy alerts
Get alerted when payer policies referencing 92538 are released or updated.
Monitor payer policy activity
Billing Code Overview
CPT code 92538 describes a caloric vestibular test, a qualitative examination that sequentially irrigates each ear with either warm or cool water (monothermal) while observing the patient’s eye movements. The procedure evaluates vestibular function and measures disturbance in the inner ear and the vestibulocochlear nerves involved in hearing and balance.
Service type: Diagnostic vestibular function testing
Typical site of service: Outpatient clinic or hospital-based outpatient department, often within audiology, otolaryngology, or neuro-otology practice settings
Data not available in the input.