Summary & Overview
CPT 92638: Hearing Aid Benefit Testing, Add-On
CPT code 92638 designates an add-on diagnostic service performed during a hearing aid fitting or follow-up to assess how well a patient hears with their hearing aids in place. The code captures outcome-focused listening tests that quantify benefit from amplification and supports clinical decision-making about device programming, counseling, and further rehabilitation. Nationally, this service matters because it documents measurable patient benefit from hearing aids, informs medical necessity determinations, and is commonly used in audiology and otolaryngology outpatient settings.
Key payers in the national context include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find practical context on clinical use and the service setting, as well as benchmarks and payer coverage considerations when available. The publication summarizes how the code is used alongside hearing aid fittings and follow-ups, highlights common billing and documentation considerations, and outlines areas where policy updates or payer guidance may affect coverage decisions.
This analysis is intended for clinicians, billing professionals, and policy analysts seeking a concise, national-level overview of the clinical role and billing context for the service represented by CPT code 92638.
Billing Code Overview
CPT code 92638 is an add-on service performed as part of hearing aid care to evaluate how well a patient hears with their hearing aids in place. The service uses listening tests to measure the functional benefit provided by the hearing aids and is intended to be reported in conjunction with a hearing aid fitting or follow-up visit.
Service type: Diagnostic assessment / Device outcome testing (hearing aid benefit testing)
Typical site of service: Audiology clinic or outpatient otolaryngology/audiology setting, performed during a hearing aid fitting or follow-up appointment.
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Clinical & Coding Specifications
Clinical Context
A typical patient is an adult with bilateral sensorineural hearing loss who recently received new hearing aids and presents for a post-fitting verification visit. The audiologist or otolaryngologist performs aided speech-recognition testing and aided sound-field threshold measurement while the patient wears the hearing aids to quantify functional benefit and guide device programming. The clinical workflow includes a brief history and device check, inspection of the hearing aids and ear molds, verification of proper physical fit, real-ear or coupler measurements as indicated, and then aided listening tests such as aided warble-tone thresholds, aided speech recognition in quiet (e.g., monosyllabic words) and in noise, and validated benefit questionnaires. Test results inform device adjustments, earmold modifications, or recommendations for follow-up. Documentation includes device make/model, test environment, test stimuli and levels, pre- and post-aided scores, and any adjustments made. Typical site of service is an outpatient audiology clinic, otolaryngology clinic, or hearing aid dispensary where hearing aid fitting and follow-up services are provided.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
26 | Professional Component | Use when reporting only the provider’s professional interpretation component if the technical component is billed separately by another entity. |