CPT code 92537: Caloric test, with eye-movement recording2026 Medicare rate & RVUs in Marin County, CA
Reports bilateral caloric vestibular testing with recorded eye movements to assess vestibular function, commonly during evaluation of dizziness or imbalance.
In Marin County, CA, Medicare pays $48.73 for 92537 in the office.
Check a contract rate as a % of Medicare · 92537 nationwide
Medicare allowed amount for participating (non-QP) physicians, before deductible, coinsurance and claim adjustments. Not a patient’s bill or a hospital charge.
On this page 11 sections
What 92537 covers
This test stimulates the vestibular system by irrigating the ears with warm and cool water or air, then recording the resulting eye movements, including nystagmus. Audiologists and otolaryngology or neurotology clinicians commonly perform it in an audiology or vestibular testing laboratory when evaluating dizziness, vertigo, or imbalance. The recorded responses help assess vestibular function and compare responses to the different stimuli.
Choose this code when the caloric test is performed with recording; 92538 is the counterpart for testing without recording. Documentation should identify the test performed and support that eye movements were recorded, with findings and interpretation in the record. The code is priced as bilateral, so modifier 50 does not increase payment. Report modifier 26 for the professional interpretation or TC for the technical service; without either modifier, the claim represents the global service.
This summary was written with AI assistance from CMS physician fee schedule data and checked against the CMS billing rules shown here. Rates on this page come directly from CMS files.
How Marin County, CA compares for 92537
Across 109 of 109 payment localities, the office rate for 92537 runs from $36.40 in Arkansas to $50.20 in Alaska. Marin County, CA pays $48.73. The RVUs are the same everywhere; the geographic indexes change the dollars.
- Marin County, CA · this page$48.73
- Bakersfield, CA · California$41.35−$7.38
- Chico, CA · California$41.27−$7.46
- El Centro, CA · California$41.27−$7.46
- Fresno, CA · California$41.27−$7.46
- Hanford, CA · California$41.27−$7.46
- Los Angeles, CA · California$43.48−$5.25
Other areas in California first, then benchmark localities. Bars start at $0.
Every other payment area
| Payment locality | Office | Facility |
|---|---|---|
| Madera, CACalifornia | $41.27 | — |
| Merced, CACalifornia | $41.27 | — |
| Modesto, CACalifornia | $41.27 | — |
| Napa, CACalifornia | $46.38 | — |
| Oxnard, CACalifornia | $43.18 | — |
| Redding, CACalifornia | $41.27 | — |
| Rest of CaliforniaCalifornia | $41.27 | — |
| Riverside, CACalifornia | $41.50 | — |
| Sacramento, CACalifornia | $42.92 | — |
| Salinas, CACalifornia | $42.74 | — |
| San Diego, CACalifornia | $43.43 | — |
| San Francisco, CACalifornia | $48.71 | — |
| San Benito County, CACalifornia | $49.69 | — |
| Santa Clara County, CACalifornia | $49.59 | — |
| San Luis Obispo, CACalifornia | $42.08 | — |
| Santa Cruz, CACalifornia | $43.61 | — |
| Santa Maria, CACalifornia | $42.82 | — |
| Santa Rosa, CACalifornia | $44.04 | — |
| Stockton, CACalifornia | $41.27 | — |
| Vallejo, CACalifornia | $46.35 | — |
| Visalia, CACalifornia | $41.27 | — |
| Yuba City, CACalifornia | $41.27 | — |
| Washington, DC areaDistrict of Columbia | $43.94 | — |
| Miami, FLFlorida | $41.22 | — |
| Chicago, ILIllinois | $40.51 | — |
| Manhattan, NYNew York | $44.15 | — |
| AlaskaAlaska | $50.20 | — |
| AlabamaAlabama | $36.74 | — |
| ArkansasArkansas | $36.40 | — |
| ArizonaArizona | $38.73 | — |
| ColoradoColorado | $40.72 | — |
| ConnecticutConnecticut | $41.41 | — |
| DelawareDelaware | $39.22 | — |
| Fort Lauderdale, FLFlorida | $40.20 | — |
| Rest of FloridaFlorida | $38.91 | — |
| Atlanta, GAGeorgia | $39.91 | — |
| Rest of GeorgiaGeorgia | $37.49 | — |
| Hawaii, Guam, HIHawaii | $41.74 | — |
| IowaIowa | $37.39 | — |
| IdahoIdaho | $37.54 | — |
| East St. Louis, ILIllinois | $38.57 | — |
| Rest of IllinoisIllinois | $38.13 | — |
| Suburban Chicago, ILIllinois | $40.58 | — |
| IndianaIndiana | $37.68 | — |
| KansasKansas | $37.25 | — |
| KentuckyKentucky | $37.24 | — |
| New Orleans, LALouisiana | $38.38 | — |
| Rest of LouisianaLouisiana | $37.20 | — |
| Metropolitan Boston, MAMassachusetts | $43.84 | — |
| Rest of MassachusettsMassachusetts | $40.60 | — |
| Baltimore area, MDMaryland | $41.28 | — |
| Rest of MarylandMaryland | $39.78 | — |
| Rest of MaineMaine | $37.64 | — |
| Southern Maine, MEMaine | $39.00 | — |
| Detroit, MIMichigan | $39.20 | — |
| Rest of MichiganMichigan | $37.84 | — |
| MinnesotaMinnesota | $39.49 | — |
| Metropolitan Kansas City, MOMissouri | $38.24 | — |
| Metropolitan St. Louis, MOMissouri | $38.50 | — |
| Rest of MissouriMissouri | $36.77 | — |
| MississippiMississippi | $36.59 | — |
| MontanaMontana | $39.41 | — |
| North CarolinaNorth Carolina | $37.90 | — |
| North DakotaNorth Dakota | $39.02 | — |
| NebraskaNebraska | $37.53 | — |
| New HampshireNew Hampshire | $40.11 | — |
| Northern New JerseyNew Jersey | $43.75 | — |
| Rest of New JerseyNew Jersey | $42.02 | — |
| New MexicoNew Mexico | $37.97 | — |
| NevadaNevada | $39.32 | — |
| NYC suburbs and Long Island, NYNew York | $44.85 | — |
| Poughkeepsie and northern NYC suburbs, NYNew York | $42.25 | — |
| Queens, NYNew York | $44.43 | — |
| Rest of New YorkNew York | $38.26 | — |
| OhioOhio | $37.76 | — |
| OklahomaOklahoma | $37.23 | — |
| Portland, OROregon | $41.67 | — |
| Rest of OregonOregon | $39.14 | — |
| Metropolitan Philadelphia, PAPennsylvania | $40.68 | — |
| Rest of PennsylvaniaPennsylvania | $37.82 | — |
| Puerto RicoPuerto Rico | $39.61 | — |
| Rhode IslandRhode Island | $40.34 | — |
| South CarolinaSouth Carolina | $37.87 | — |
| South DakotaSouth Dakota | $38.97 | — |
| TennesseeTennessee | $37.37 | — |
| Austin, TXTexas | $40.48 | — |
| Beaumont, TXTexas | $37.65 | — |
| Brazoria, TXTexas | $39.25 | — |
| Dallas, TXTexas | $39.42 | — |
| Fort Worth, TXTexas | $39.24 | — |
| Galveston, TXTexas | $39.32 | — |
| Houston, TXTexas | $39.69 | — |
| Rest of TexasTexas | $38.38 | — |
| UtahUtah | $38.20 | — |
| VirginiaVirginia | $38.89 | — |
| Virgin Islands, VIUnited States Virgin Islands | $39.61 | — |
| VermontVermont | $38.89 | — |
| Rest of WashingtonWashington | $40.52 | — |
| King County, WAWashington | $44.60 | — |
| WisconsinWisconsin | $38.15 | — |
| West VirginiaWest Virginia | $37.21 | — |
| WyomingWyoming | $39.24 | — |
92537 rates by state
Office rate range in each state. Select a state to see its payment localities.
Explore a state
Local rates. Clear comparisons.
Hover or focus a tile to see its rate range. Select it to open the state’s fee schedule.
$36.40
$50.20
Color shows the midpoint of each state’s locality range.
View every state and territory as a table
| State / territory | Office rate range | Localities |
|---|---|---|
| AK | $50.20 | 1 |
| AL | $36.74 | 1 |
| AR | $36.40 | 1 |
| AZ | $38.73 | 1 |
| CA | $41.27–$49.69 | 29 |
| CO | $40.72 | 1 |
| CT | $41.41 | 1 |
| DC | $43.94 | 1 |
| DE | $39.22 | 1 |
| FL | $38.91–$41.22 | 3 |
| GA | $37.49–$39.91 | 2 |
| GU | $41.74 | 1 |
| HI | $41.74 | 1 |
| IA | $37.39 | 1 |
| ID | $37.54 | 1 |
| IL | $38.13–$40.58 | 4 |
| IN | $37.68 | 1 |
| KS | $37.25 | 1 |
| KY | $37.24 | 1 |
| LA | $37.20–$38.38 | 2 |
| MA | $40.60–$43.84 | 2 |
| MD | $39.78–$43.94 | 3 |
| ME | $37.64–$39.00 | 2 |
| MI | $37.84–$39.20 | 2 |
| MN | $39.49 | 1 |
| MO | $36.77–$38.50 | 3 |
| MS | $36.59 | 1 |
| MT | $39.41 | 1 |
| NC | $37.90 | 1 |
| ND | $39.02 | 1 |
| NE | $37.53 | 1 |
| NH | $40.11 | 1 |
| NJ | $42.02–$43.75 | 2 |
| NM | $37.97 | 1 |
| NV | $39.32 | 1 |
| NY | $38.26–$44.85 | 5 |
| OH | $37.76 | 1 |
| OK | $37.23 | 1 |
| OR | $39.14–$41.67 | 2 |
| PA | $37.82–$40.68 | 2 |
| PR | $39.61 | 1 |
| RI | $40.34 | 1 |
| SC | $37.87 | 1 |
| SD | $38.97 | 1 |
| TN | $37.37 | 1 |
| TX | $37.65–$40.48 | 8 |
| UT | $38.20 | 1 |
| VA | $38.89–$43.94 | 2 |
| VI | $39.61 | 1 |
| VT | $38.89 | 1 |
| WA | $40.52–$44.60 | 2 |
| WI | $38.15 | 1 |
| WV | $37.21 | 1 |
| WY | $39.24 | 1 |
How the 92537 rate is calculated
Each of 92537’s three RVUs is multiplied by a geographic index (GPCI) for the payment locality, added up, and multiplied by the conversion factor. Drag the indexes or enter a ZIP to see what moves the rate.
How the rate is built · 92537
RVUs × geographic indexes × conversion factor
Work0.59
0.59 RVUs× 1.000 GPCI
Practice expense0.57
0.57 RVUs× 1.000 GPCI
Malpractice0.02
0.02 RVUs× 1.000 GPCI
Adjusted RVUs
1.1800
Conversion factor
$33.4009
Medicare rate
$39.41
Every GPCI starts at 1.000, the national rate. Enter a ZIP or drag a slider.
The exact Marin County, CA inputs and CMS source lines
PPRRVU2026_Oct_nonQPP.csv
11,797
- Code
- 92537
- Physician work
- 0.59
- Practice expense
- 0.57
- Malpractice
- 0.02
GPCI2026.csv
25
- Locality
- Marin County, CA
- Physician work
- 1.095
- Practice expense
- 1.410
- Malpractice
- 0.459
| Component | RVU | Locality factor | Adjusted |
|---|---|---|---|
| Physician work | 0.59 | × 1.095 | 0.6460 |
| Practice expense | 0.57 | × 1.410 | 0.8037 |
| Malpractice | 0.02 | × 0.459 | 0.0092 |
| Total RVUs | 1.4589 | ||
| Conversion factor | × 33.4009 | ||
Office rate, Marin County, CA$48.73
Office: (0.59 × 1.095 + 0.57 × 1.41 + 0.02 × 0.459) × $33.4009 = $48.73
Payment rules and modifiers for 92537
The CMS indicators that decide how 92537 is paid alongside other services.
CMS payment indicators · 92537
Caloric test, with eye-movement recording
| Rule | CMS value | What it means |
|---|---|---|
| Global period | XXX | The global surgery concept doesn’t apply. |
| Multiple procedures | 0 | No multiple-procedure reduction. |
| Bilateral (modifier 50) | 2 | Already bilateral by definition: paid once at 100%. |
| Assistant at surgery (80/81/82/AS) | 0 | Not paid without supporting documentation. |
| Co-surgeons (62) | 0 | Not permitted. |
| Team surgery (66) | 0 | Not permitted. |
| Professional/technical | 1 | Diagnostic test with separate professional (26) and technical (TC) components. |
What modifiers do to the payment
Modifier 26 · payment effect
With and without the modifier
92537 without 26 · national office
$39.41
Caloric test, with eye-movement recording
92537-26 · Professional component
$30.39
Pays only the interpretation and report.
How 92537 has changed in Marin County, CA
92537 · Office / nonfacility
$48.73
Effective 2026-10-01
The base rate is $2.07 higher than on 2025-10-01, moving from $46.66 to $48.73 (4.4%).
It is unchanged from the immediately preceding available release, effective 2026-07-01.
One bar per available release, ordered by effective date. Missing rates remain gaps. These comparisons hold the code, setting and locality identifiers constant; they do not isolate which policy or input caused a change.
What changed, release by release
January 1, 2026
RVU26A
$46.66changed to$48.73
- Conversion factor 32.3465 changed to 33.4009
- Work RVU 0.60 changed to 0.59
- Practice expense RVU 0.55 changed to 0.57
- Work GPCI 1.088 changed to 1.095
- Practice expense GPCI 1.419 changed to 1.410
- Malpractice GPCI 0.470 changed to 0.459
Held through RVU26B, RVU26C, RVU26D.
January 1, 2025
RVU25A
$48.97changed to$46.66
- Conversion factor 33.2875 changed to 32.3465
- Practice expense RVU 0.57 changed to 0.55
Held through RVU25B, RVU25C, RVU25D.
March 9, 2024
RVU24AR
$48.17changed to$48.97
- Conversion factor 32.7442 changed to 33.2875
Held through RVU24B, RVU24C, RVU24D.
January 1, 2024
RVU24A
$49.34changed to$48.17
- Conversion factor 33.8872 changed to 32.7442
- Practice expense RVU 0.58 changed to 0.57
- Work GPCI 1.082 changed to 1.088
- Practice expense GPCI 1.374 changed to 1.419
- Malpractice GPCI 0.487 changed to 0.470
January 1, 2023
RVU23A
$49.85changed to$49.34
- Conversion factor 34.6062 changed to 33.8872
- Practice expense RVU 0.59 changed to 0.58
- Work GPCI 1.077 changed to 1.082
- Practice expense GPCI 1.329 changed to 1.374
- Malpractice GPCI 0.504 changed to 0.487
Held through RVU23B, RVU23C, RVU23D.
January 1, 2022
RVU22A
$50.22changed to$49.85
- Conversion factor 34.8931 changed to 34.6062
- Practice expense RVU 0.60 changed to 0.59
- Work GPCI 1.071 changed to 1.077
- Practice expense GPCI 1.311 changed to 1.329
Held through RVU22B, RVU22C, RVU22D.
January 1, 2021
RVU21A
$49.73changed to$50.22
- Conversion factor 36.0896 changed to 34.8931
- Practice expense RVU 0.56 changed to 0.60
- Work GPCI 1.068 changed to 1.071
- Practice expense GPCI 1.299 changed to 1.311
- Malpractice GPCI 0.481 changed to 0.504
Held through RVU21B, RVU21C, RVU21D.
January 1, 2020
RVU20A
$48.18changed to$49.73
- Conversion factor 36.0391 changed to 36.0896
- Practice expense RVU 0.53 changed to 0.56
- Malpractice RVU 0.03 changed to 0.02
- Work GPCI 1.065 changed to 1.068
- Practice expense GPCI 1.291 changed to 1.299
- Malpractice GPCI 0.458 changed to 0.481
Held through RVU20B, RVU20C, RVU20D.
January 1, 2019
RVU19A
$47.38changed to$48.18
- Conversion factor 35.9996 changed to 36.0391
- Practice expense RVU 0.52 changed to 0.53
- Work GPCI 1.062 changed to 1.065
- Practice expense GPCI 1.279 changed to 1.291
Held through RVU19B, RVU19C, RVU19D.
January 1, 2018
RVU18AR1
$46.56changed to$47.38
- Conversion factor 35.8887 changed to 35.9996
- Practice expense RVU 0.51 changed to 0.52
- Work GPCI 1.058 changed to 1.062
- Practice expense GPCI 1.271 changed to 1.279
- Malpractice GPCI 0.477 changed to 0.458
Held through RVU18B, RVU18C, RVU18D.
January 1, 2017
RVU17A
No ratechanged to$46.56
Held through RVU17B, RVU17C, RVU17D.
January 1, 2016
RVU16A
No ratechanged toNo rate
Held through RVU16B, RVU16C, RVU16D.
January 1, 2013
RVU13AR
Earliest loaded release: No rate
Held through RVU13B, RVU13C, RVU13D, RVU14A, RVU14B, RVU14C, RVU14D, RVU15A, RVU15B, RVU15C, RVU15D.
| Effective from | Office | Facility | CMS release |
|---|---|---|---|
| 2026-10-01 | $48.73 | Not available in this setting | RVU26D |
| 2026-07-01 | $48.73 | Not available in this setting | RVU26C |
| 2026-04-01 | $48.73 | Not available in this setting | RVU26B |
| 2026-01-01 | $48.73 | Not available in this setting | RVU26A |
| 2025-10-01 | $46.66 | Not available in this setting | RVU25D |
| 2025-07-01 | $46.66 | Not available in this setting | RVU25C |
| 2025-04-01 | $46.66 | Not available in this setting | RVU25B |
| 2025-01-01 | $46.66 | Not available in this setting | RVU25A |
| 2024-10-01 | $48.97 | Not available in this setting | RVU24D |
| 2024-07-01 | $48.97 | Not available in this setting | RVU24C |
| 2024-04-01 | $48.97 | Not available in this setting | RVU24B |
| 2024-03-09 | $48.97 | Not available in this setting | RVU24AR |
| 2024-01-01 | $48.17 | Not available in this setting | RVU24A |
| 2023-10-01 | $49.34 | Not available in this setting | RVU23D |
| 2023-07-01 | $49.34 | Not available in this setting | RVU23C |
| 2023-04-01 | $49.34 | Not available in this setting | RVU23B |
| 2023-01-01 | $49.34 | Not available in this setting | RVU23A |
| 2022-10-01 | $49.85 | Not available in this setting | RVU22D |
| 2022-07-01 | $49.85 | Not available in this setting | RVU22C |
| 2022-04-01 | $49.85 | Not available in this setting | RVU22B |
| 2022-01-01 | $49.85 | Not available in this setting | RVU22A |
| 2021-10-01 | $50.22 | Not available in this setting | RVU21D |
| 2021-07-01 | $50.22 | Not available in this setting | RVU21C |
| 2021-04-01 | $50.22 | Not available in this setting | RVU21B |
| 2021-01-01 | $50.22 | Not available in this setting | RVU21A |
| 2020-10-01 | $49.73 | Not available in this setting | RVU20D |
| 2020-07-01 | $49.73 | Not available in this setting | RVU20C |
| 2020-04-01 | $49.73 | Not available in this setting | RVU20B |
| 2020-01-01 | $49.73 | Not available in this setting | RVU20A |
| 2019-10-01 | $48.18 | Not available in this setting | RVU19D |
| 2019-07-01 | $48.18 | Not available in this setting | RVU19C |
| 2019-04-01 | $48.18 | Not available in this setting | RVU19B |
| 2019-01-01 | $48.18 | Not available in this setting | RVU19A |
| 2018-10-01 | $47.38 | Not available in this setting | RVU18D |
| 2018-07-01 | $47.38 | Not available in this setting | RVU18C |
| 2018-04-01 | $47.38 | Not available in this setting | RVU18B |
| 2018-01-01 | $47.38 | Not available in this setting | RVU18AR1 |
| 2017-10-01 | $46.56 | Not available in this setting | RVU17D |
| 2017-07-01 | $46.56 | Not available in this setting | RVU17C |
| 2017-04-01 | $46.56 | Not available in this setting | RVU17B |
| 2017-01-01 | $46.56 | Not available in this setting | RVU17A |
| 2016-10-01 | Rate data unavailable | Not available in this setting | RVU16D |
| 2016-07-01 | Rate data unavailable | Not available in this setting | RVU16C |
| 2016-04-01 | Rate data unavailable | Not available in this setting | RVU16B |
| 2016-01-01 | Rate data unavailable | Not available in this setting | RVU16A |
| 2015-10-01 | Not in this release | Not in this release | RVU15D |
| 2015-07-01 | Not in this release | Not in this release | RVU15C |
| 2015-04-01 | Not in this release | Not in this release | RVU15B |
| 2015-01-01 | Not in this release | Not in this release | RVU15A |
| 2014-10-01 | Not in this release | Not in this release | RVU14D |
| 2014-07-01 | Not in this release | Not in this release | RVU14C |
| 2014-04-01 | Not in this release | Not in this release | RVU14B |
| 2014-01-01 | Not in this release | Not in this release | RVU14A |
| 2013-10-01 | Not in this release | Not in this release | RVU13D |
| 2013-07-01 | Not in this release | Not in this release | RVU13C |
| 2013-04-01 | Not in this release | Not in this release | RVU13B |
| 2013-01-01 | Not in this release | Not in this release | RVU13AR |
Where the Marin County, CA rate applies
Marin County, CA is a Medicare payment area, not a city. Our Census mapping connects it to 31 cities and communities in California. Some span more than one payment area; confirm with the service ZIP.
- Alto
- Belvedere
- Black Point-Green Point
- Bolinas
- Corte Madera
- Dillon Beach
- Fairfax
- Inverness
92537 billing questions
How does 92537 differ from 92538?
92537 is for caloric vestibular testing with eye-movement recording. Use 92538 when the test is performed without recording.
Should modifier 50 be added for both ears?
No. CMS prices 92537 as a bilateral service, and modifier 50 does not increase payment.
When should modifier 26 or TC be used?
Use 26 for the professional interpretation and TC for the technical service, including equipment and staff. Billing without either modifier represents the global service.
What documentation supports 92537?
Document that caloric testing was performed with eye-movement recording and include the findings and interpretation. The record should support that the service was the recorded test rather than testing without recording.
Can 92537 be reported with 92540?
The caloric test is distinct from the basic vestibular evaluation represented by 92540. Report both when each service was performed and documented.
Where these rates come from
FeeBase calculates base physician payments from CMS work, practice-expense and malpractice RVUs, adjusted by each locality’s geographic indexes and the conversion factor. Services without a published rate are labeled, never given a made-up amount. Amounts are Medicare allowed amounts before claim adjustments: not a patient’s bill or a commercial rate.
CMS RVU26D · effective Oct 1, 2026 through the day before Jan 1, 2027
Show the CMS file lines behind this rate
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