CPT Code 92557: Comprehensive Audiometry Billing Guide for ENT Practices in 2026

What Is CPT Code 92557?

CPT code 92557 is the procedure code for a comprehensive audiometry threshold evaluation and speech recognition test, combining pure-tone air and bone conduction testing with speech reception threshold and word recognition testing into a single billable service. It is the standard code ENT practices and audiologists use to bill for a complete diagnostic hearing evaluation.

Quick Answers

It is a combination code: 92557 bundles the work of 92553 (pure-tone air and bone conduction) and 92556 (speech audiometry with speech recognition) into one code. Billing the components separately on the same date of service triggers NCCI bundling denials.

Medicare pays approximately $35.74: The 2026 national average Medicare non-facility reimbursement for 92557 is roughly $35.74, while the average provider charge sits near $119.97. Coverage depends entirely on the diagnosis code, because Medicare excludes hearing tests ordered for hearing aid fitting.

Denials cluster around bundling and medical necessity: The most common 92557 claim failures involve unbundling errors (billing 92553 or 92556 alongside it), missing or incorrect diagnosis codes, and same-day conflicts with E/M services or tympanometry when modifier rules are not followed.

What CPT Code 92557 Covers

CPT 92557 represents a comprehensive audiometric evaluation that includes four components performed together: air conduction pure-tone threshold testing, bone conduction pure-tone threshold testing, speech reception threshold (SRT) testing, and word recognition (WR) testing. The AMA defines it as a combination code that already includes the work described by 92553 and 92556, which means reporting any of those component codes on the same date of service is incorrect and will be denied under NCCI edits.

The test itself typically takes 20 to 30 minutes in a sound-treated booth. The audiologist or supervising physician presents tones at various frequencies through headphones (air conduction) and through a bone oscillator placed on the mastoid process (bone conduction), then measures how well the patient can detect and repeat spoken words at progressively lower volumes and identify words at a comfortable listening level.

In an ENT context, 92557 is one of the highest-volume audiology codes a practice bills. Providers often come to us after discovering that their audiometry claims are being denied at rates well above the norm, and the root cause almost always traces back to one of three problems: unbundling the components, attaching a diagnosis code that signals a hearing aid evaluation rather than a diagnostic workup, or failing to document the medical necessity that justifies the test. Each of those problems is preventable, but only if the person posting and scrubbing the claims knows the code’s specific rules.

How Does 92557 Differ from 92552, 92553, and 92556?

The audiometry code family is tightly bundled, and confusing which code to report is one of the fastest ways to generate a denial. Here is how the codes relate to each other and when each one applies.

CPT Code	Description	When to Use
92552	Pure-tone audiometry, air only	Air conduction thresholds without bone conduction or speech testing
92553	Pure-tone audiometry, air and bone	Air and bone conduction thresholds without speech testing
92556	Speech audiometry threshold with speech recognition	Speech reception and word recognition without pure-tone testing
92557	Comprehensive audiometry threshold evaluation and speech recognition	Full evaluation: air conduction, bone conduction, SRT, and word recognition performed together

The rule is straightforward: if all four components are performed in the same session, report 92557 alone. If you performed only air and bone thresholds without speech testing, report 92553. If you performed only speech testing, report 92556. Billing 92553 plus 92556 on the same date is the functional equivalent of 92557 and will be caught by NCCI edits.

One question we hear constantly from ENT practice managers is whether there is ever a reason to bill the components separately. The answer is only when the components are legitimately performed on different dates of service. If a patient returns days later for the speech recognition portion, then 92553 on day one and 92556 on day two is correct. On the same day, it is always 92557.

For a breakdown of another high-volume ENT diagnostic code with its own bundling rules, see our guide to CPT code 31231 for diagnostic nasal endoscopy.

What Does Medicare Pay for 92557 in 2026?

The 2026 Medicare national average non-facility reimbursement for CPT 92557 is approximately $35.74, calculated using the $33.40 conversion factor applied to the code’s total relative value units. The average provider charge nationally is roughly $119.97, a gap of about 3.4 times the Medicare allowable. Actual payment varies by geographic practice cost index, so a practice in a high-cost metro area will see a higher adjusted rate than one in a rural market.

The critical coverage distinction for 92557 under Medicare is why the test was ordered. A hearing evaluation ordered to diagnose a medical condition, such as hearing loss related to chronic otitis media, ototoxic medication monitoring, or tinnitus evaluation, is generally covered under Medicare Part B. A hearing evaluation ordered for the purpose of fitting or selecting a hearing aid is explicitly excluded by federal statute, regardless of the diagnosis code attached. The same CPT code can be covered or denied based solely on the clinical indication and the ICD-10 code supporting it.

CMS also confirmed that CPT 92557 is exempt from the 2.5% efficiency adjustment that applies to select non-time-based diagnostic codes in 2026, as noted in the final Medicare Physician Fee Schedule rule. That exemption means the code’s reimbursement was not reduced by the productivity factor that affected some other audiology services.

Across the billing companies we vet for ENT practices, the most common revenue leak on 92557 claims is not the reimbursement rate itself but the diagnosis code selection. A billing team that routinely pairs 92557 with a hearing aid evaluation diagnosis rather than a medical diagnosis is leaving every one of those claims exposed to denial, and many practices do not catch the pattern until the aged AR report shows a stack of unpaid audiometry charges.

Modifiers Used with CPT 92557

92557 is inherently bilateral, meaning the evaluation covers both ears as part of the standard procedure. That default status limits the modifiers that apply, but the ones that do apply are high-stakes for claim adjudication.

Modifier 52 (Reduced Services): Append modifier 52 when only one ear is evaluated for a documented medical reason, such as a single hearing ear or a patient who cannot tolerate testing on one side. This tells the payer the comprehensive evaluation was not fully completed and adjusts the expected reimbursement accordingly.

Modifier 59 (Distinct Procedural Service): Use modifier 59 when 92557 is performed on the same date as another audiological procedure that would otherwise be considered bundled, such as tympanometry (92567), and the services are truly distinct. However, NCCI edits have narrowed the use of modifier 59 for audiology code pairs, so verify the current edit table before appending it.

Modifier 25 on the E/M code: When a physician performs a separately identifiable evaluation and management service on the same day as 92557, modifier 25 goes on the E/M code, not on 92557. The E/M documentation must support a significant, separately identifiable evaluation beyond the decision to order the audiometry.

In our experience matching ENT providers with billing partners, modifier errors on audiology claims are one of the top three reasons practices see denial spikes on hearing-related services. The most expensive mistake is appending modifier 59 when the NCCI edit does not allow it for that specific code pair, because the claim processes as a false override and the payer recoups the payment on audit.

Common 92557 Billing Errors and Denials

Every ENT practice running audiology encounters the same handful of 92557 claim failures. The practices that fix them treat these as process errors rather than one-off denials.

Unbundling the components. Billing 92553 and 92556 separately when all four test components were performed in the same session. Fix: always report 92557 when the full evaluation is completed on the same date.

Wrong diagnosis code for Medicare. Pairing 92557 with a hearing aid evaluation or screening diagnosis instead of a medical diagnosis. Fix: confirm the ordering physician documented a diagnostic medical indication such as hearing loss (H90.x), tinnitus (H93.1x), or ototoxicity monitoring before submitting.

Missing the physician order. Medicare requires a physician or qualified NPP order for covered audiology testing. Claims submitted without a documented order on file are denied. Fix: verify the order exists in the chart before the claim goes out.

Same-day conflict with tympanometry. Billing 92557 and 92567 together without the correct modifier or without meeting the NCCI override criteria. Some payers deny the pair outright. Fix: check the current NCCI edit table for the 92557/92567 pair and confirm modifier 59 is valid before appending it.

Incomplete documentation. Failing to record results for all four components (air thresholds, bone thresholds, SRT, word recognition) or omitting the interpretation. Fix: ensure the audiogram documents ear-specific thresholds, speech scores, the test environment, and a diagnostic impression signed by the supervising provider.

Billing routine screenings under 92557. Using the comprehensive audiometry code for a simple hearing screening. Fix: report 92551 for a pass/fail pure-tone air conduction screen, not 92557.

The biggest issue we see ENT providers run into is treating audiology billing as simple when it is actually one of the most bundle-sensitive areas of ENT revenue. A billing team that does not know the NCCI edit table for the 92550 through 92588 family will generate denials at a rate that quietly erodes collections month after month.

What Documentation Does 92557 Require?

Complete documentation for a 92557 claim should include all of the following elements. Missing any one of them gives the payer grounds for a denial or a post-payment recoupment request.

Physician or NPP order: A signed order indicating the test was requested for a diagnostic medical reason.

Pure-tone audiogram: Air conduction thresholds for each ear at the standard test frequencies, plus bone conduction thresholds for each ear.

Speech reception thresholds (SRT): The lowest intensity at which the patient can correctly repeat spondee words, documented per ear.

Word recognition scores (WRS): The percentage of monosyllabic words correctly identified at a suprathreshold level, documented per ear with the presentation level noted.

Test environment: Confirmation that testing was performed in a sound-treated booth meeting ANSI standards.

Equipment calibration: A note or reference confirming the audiometer meets current calibration standards per ANSI S3.6.

Diagnostic interpretation: A clinical impression signed by the supervising audiologist or physician, such as bilateral moderate sensorineural hearing loss or unilateral conductive hearing loss secondary to chronic otitis media.

For ENT practices that also bill tympanostomy procedures under CPT 69436 or flexible laryngoscopy under CPT 31575, the documentation discipline is the same: every component of the service must be individually documented to support the code billed. Partial documentation invites partial payment or full recoupment.

Can You Bill 92557 with Other Codes on the Same Day?

Yes, but same-day billing with 92557 requires understanding the NCCI edit table and your payer’s specific policies. The most common same-day scenarios in ENT are 92557 billed alongside tympanometry (92567), otoacoustic emissions (92587 or 92588), and an evaluation and management visit.

92557 and 92567 (tympanometry) are separate tests measuring different things: 92557 measures hearing thresholds and speech recognition, while 92567 measures middle-ear compliance. Some payers allow both on the same date with modifier 59, while others bundle them regardless. The safest approach is to check the NCCI indicator for the pair: if the indicator is “1,” modifier 59 can override the edit when the services are genuinely distinct. If the indicator is “0,” the edit cannot be overridden.

92557 and an E/M service require modifier 25 on the E/M code, and the E/M documentation must support a significant, separately identifiable evaluation. An office visit note that says nothing beyond “patient here for hearing test” will not support a separate E/M.

Providers often come to us after months of watching audiology revenue underperform and discovering that their billing team was either leaving money on the table by not billing separately billable same-day services, or generating denials by billing them incorrectly. Both problems cost the same thing: lost revenue that a billing partner with ENT-specific coding knowledge would have caught.

Frequently Asked Questions

Next Steps

Need to review related ENT procedure codes? See our guides to CPT 31231 for diagnostic nasal endoscopy, CPT 31575 for flexible laryngoscopy, and CPT 69436 for tympanostomy tube placement.

For a broader look at how ENT Billing Services connects providers with billing partners who handle codes like these daily, visit our About Us page.