CPT code 95923: Sweat function test, sudomotor testing2026 Medicare rate & RVUs in Texas
Reports sudomotor autonomic testing, such as QSART or thermoregulatory sweat testing, to evaluate sweat-gland responses in suspected autonomic dysfunction.
Medicare pays $114.23–$127.76 for 95923 in the office in Texas, from Beaumont, TX to Austin, TX. Which amount applies depends on the service address.
Medicare allowed amount for participating (non-QP) physicians, before deductible, coinsurance and claim adjustments. Not a patient’s bill or a hospital charge.
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On this page 9 sections
What 95923 covers
Code 95923 represents testing of sweat-gland responses as an indicator of autonomic nerve function. The service may use QSART, a silastic sweat imprint, thermoregulatory sweat testing, or more than one of these approaches, with interpretation and a report. Neurologists and other clinicians who evaluate autonomic disorders commonly order it for problems such as suspected autonomic or small-fiber neuropathy, abnormal sweating, or related sensory and autonomic symptoms. Testing is generally performed in an autonomic or neurodiagnostic laboratory.
Choose 95923 when the function being evaluated is sudomotor, rather than parasympathetic or adrenergic function. Documentation should identify the clinical reason for testing, the method or methods performed, relevant results, and the interpretation. The service includes the interpretation and report. CMS recognizes a professional component billed with modifier 26 for interpretation and a technical component billed with modifier TC for equipment and staff; billing without either modifier 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.
Where 95923 pays more and less in Texas
The same RVUs, adjusted for each area’s costs. Open a locality for its calculation, history and nearby areas.
8 payment localities
$114.23 to $127.76
8 of 8 payment localities
| Payment locality | Office | Facility |
|---|---|---|
| Austin, TX | $127.76 | Unavailable |
| Beaumont, TX | $114.23 | Unavailable |
| Brazoria, TX | $121.63 | Unavailable |
| Dallas, TX | $122.24 | Unavailable |
| Fort Worth, TX | $121.35 | Unavailable |
| Galveston, TX | $121.89 | Unavailable |
| Houston, TX | $122.80 | Unavailable |
| Rest of Texas | $117.75 | Unavailable |
How the 95923 rate is calculated
Each of 95923’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 · 95923
RVUs × geographic indexes × conversion factor
Work0.88
0.88 RVUs× 1.000 GPCI
Practice expense2.74
2.74 RVUs× 1.000 GPCI
Malpractice0.05
0.05 RVUs× 1.000 GPCI
Adjusted RVUs
3.6700
Conversion factor
$33.4009
Medicare rate
$122.58
Every GPCI starts at 1.000, the national rate. Enter a ZIP or drag a slider.
Payment rules and modifiers for 95923
The CMS indicators that decide how 95923 is paid alongside other services.
CMS payment indicators · 95923
Sweat function test, sudomotor testing
| 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) | 0 | The 150% bilateral adjustment doesn’t apply. |
| 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
95923 without 26 · national office
$122.58
Sweat function test, sudomotor testing
95923-26 · Professional component
$43.76
Pays only the interpretation and report.
95923 compared with similar codes
Compare codes · National
4 codes, side by side
How to choose
- 95921Autonomic testingParasympathetic function
- Choose 95921 for testing parasympathetic innervation; 95923 evaluates sudomotor function through sweat responses.
- 95922Autonomic testingAdrenergic function
- Choose 95922 for adrenergic innervation testing; 95923 evaluates the autonomic pathways involved in sweating.
- 95924Autonomic testingCombined tilt-table protocol
- 95924 covers combined parasympathetic and sympathetic testing with tilt. Use 95923 for sudomotor testing, such as QSART or thermoregulatory sweat testing.
95923 billing questions
When should 95923 be selected instead of 95921 or 95922?
Use 95923 for sudomotor function, assessed through sweat responses. Codes 95921 and 95922 address parasympathetic and adrenergic function, respectively.
Does 95923 include interpretation and reporting?
Yes. The service includes interpretation and a report; CMS also permits separate professional and technical component billing with modifiers 26 and TC.
What do modifiers 26 and TC represent for this code?
Modifier 26 identifies the professional interpretation component, while TC identifies the technical work involving equipment and staff. Without either modifier, the claim represents the global service.
Can more than one sudomotor method be part of 95923?
Yes. The service may include one or more methods such as QSART, silastic sweat imprint, and thermoregulatory sweat testing.
What documentation supports 95923?
Record the reason for testing, the sudomotor method or methods performed, the findings, and the interpretation linking the results to the clinical question.
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
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