CPT code 70134 denotes plain X-ray imaging of the internal auditory canals used to evaluate structural abnormalities of the hearing apparatus. Nationally, this code represents a focused diagnostic radiology service that supports otologic and neurotologic evaluation, preoperative planning, and follow-up of hearing-related conditions. Its use matters for accurate clinical diagnosis and for consistent coding of radiographic head and ear imaging.

Key payers covered in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find an overview of clinical context for the procedure, typical sites of service, common billing modifiers associated with radiology services (listed separately), and what is available about payer coverage patterns. The publication provides benchmarks and policy-relevant details where available and highlights areas where data are not supplied in the input. This brief equips clinicians, billing staff, and policy stakeholders with a concise reference to understand the service classification, expected care settings, and where to look for payer-specific rules and authorization requirements.