Summary & Overview
CPT 92584: Auditory Evoked Potential Testing for Inner Ear Disorders
CPT code 92584 represents diagnostic auditory evoked potential testing that stimulates the inner ear with sound and records electrical responses along the auditory pathway. This neurophysiological test supports diagnosis of inner ear and auditory nerve disorders and informs clinical decisions in audiology and otolaryngology. Nationally, the code matters for accurate identification of sensorineural hearing loss, auditory neuropathy, and for monitoring auditory system function in complex diagnostic workflows.
Key payers covered in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise overview of clinical context and service delivery, typical sites of service, billing considerations, and commonly used modifiers. The publication outlines benchmarks where available and summarizes relevant policy and coverage themes that affect utilization and reimbursement for auditory evoked potential testing.
This summary provides clinical context, coding clarity, and the topics readers can expect: how CPT code 92584 is used in practice, payer coverage patterns, common billing modifiers and documentation touchpoints, and implications for providers and facilities performing diagnostic auditory evoked potential services. Data not available in the input will be noted where appropriate.
Billing Code Overview
CPT code 92584 describes a diagnostic auditory evoked potentials test in which the provider stimulates sound waves in the inner ear and measures the electrical signals (evoked potentials) generated by the auditory nerve and central nervous system. Results are used to identify inner ear and auditory pathway disorders, including sensorineural hearing loss and auditory neuropathies.
Service type: Diagnostic auditory evoked potential testing
Typical site of service: Audiology or otolaryngology clinic, hospital outpatient department, or specialized diagnostic center
Clinical & Coding Specifications
Clinical Context
A 45-year-old patient presents to an outpatient otology clinic with unilateral tinnitus, intermittent vertigo, and a recent decrease in hearing acuity after a head trauma. The referring otolaryngologist performs a focused history and physical exam, orders audiometry and tympanometry, and schedules electrophysiological testing to evaluate retrocochlear and inner ear function. The provider performs auditory brainstem response testing using click and tone-burst stimuli to stimulate sound waves in the inner ear and records the resulting evoked potentials. Results are interpreted to identify abnormalities such as acoustic neuroma, auditory neuropathy, demyelinating disease, or conductive vs sensorineural pathology. The clinical workflow includes patient consent, electrode placement, stimulus calibration, test acquisition (often 20–40 minutes), initial interpretation by the performing audiologist/technologist, and final diagnostic interpretation by the physician (otolaryngologist or neurologist). Results are documented in the medical record and communicated to the referring clinician for treatment planning or further imaging (e.g., MRI).
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
26 | Professional component | Use when billing only the physician interpretation of the test separate from the technical acquisition. |