Summary & Overview
HCPCS V5170: Hearing Aid, CROS, In the Ear
HCPCS Level II code V5170 designates a CROS (contralateral routing of signal) in-the-ear hearing aid, a device used to manage unilateral hearing loss by routing sound from the impaired ear to the better-hearing ear. Nationally, coverage and utilization of device-specific hearing aid codes like V5170 matter because they affect access to assistive hearing technology for populations with asymmetric or single-sided hearing deficits and influence supplier reimbursement and supply-chain decisions.
Key payers discussed include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find an overview of how this device is classified for billing, common clinical contexts for CROS devices, and the typical sites where these devices are provided. The publication also covers payer policies and coverage considerations, utilization and reimbursement benchmarks where available, and relevant documentation and billing practices tied to device provision and fitting.
This analysis aims to inform clinicians, billing professionals, and policy stakeholders about the national billing context for V5170, highlight where to look for payer-specific rules, and summarize the clinical role of CROS in-the-ear devices in managing unilateral hearing loss. Data not available in the input will be noted where applicable.
Billing Code Overview
HCPCS Level II code V5170 represents a hearing aid, CROS, in the ear. This device type is a contralateral routing of signal (CROS) hearing aid designed for individuals with unilateral hearing loss; the device receives sound from the poorer ear and routes it to the ear with better hearing.
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Service type: Hearing aid device provision and fitting
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Typical site of service: Audiology clinic, hearing instrument specialist office, or other outpatient hearing care setting
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Clinical & Coding Specifications
Clinical Context
A typical patient is an adult with unilateral profound sensorineural hearing loss who presents for evaluation of contralateral routing of signal (CROS) amplification because sound reaching the poorer ear is not perceivable but the better ear has normal or near-normal hearing. The patient is referred from primary care or otolaryngology after audiometric testing (pure-tone audiometry and speech discrimination) confirms a significant interaural asymmetry or single-sided deafness. The clinical workflow includes history and otologic examination, comprehensive audiometric evaluation, counseling about CROS technology, ear impression and fitting for an in-the-ear CROS device, programming and verification in the audiology clinic, patient education on use and care, and scheduled follow-up for real-ear or functional verification and adjustment. Typical visits occur in an outpatient audiology or otology clinic, often within an ambulatory surgery center or physician office setting when impressions or fittings are performed. Device dispensing and initial programming are performed by a licensed audiologist or hearing instrument specialist, with oversight by an otolaryngologist when indicated.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
25 | Significant, separately identifiable evaluation and management service by the same physician on the day of a procedure | Use when a documented E/M visit is performed the same day as CROS in-the-ear fitting and meets E/M criteria |