CPT code 92588 denotes a noninvasive diagnostic test of inner ear function used to detect vestibular and cochlear abnormalities, evaluate suspected functional hearing loss, and help distinguish sensory versus neural hearing impairment. As an objective physiologic assessment, this code is important for accurate diagnosis, treatment planning, and determining medical necessity for specialty care and rehabilitative services across the U.S.

Key payers referenced in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise explanation of clinical indications and typical service settings, along with coverage considerations and common administrative factors relevant to billing this procedure. The publication provides national benchmarks where available, notes recent policy or coding clarifications that affect claim adjudication, and outlines typical documentation elements and billing pitfalls to avoid.

This resource is intended for practice administrators, billing professionals, audiologists, and otolaryngologists seeking a practical, national-level summary of CPT code 92588 and its role in diagnostic audiology and vestibular care.