$522.21
Choose 91133 when the electrogastrography includes a test or challenge. Choose 91132 for the recording without that test component.
On this page
CMS RVU26D · Effective 2026-10-01
91133 Electrogastrography Medicare reimbursement rates in Connecticut
Electrogastrography with testing records gastric electrical activity during a challenge, helping evaluate abnormal stomach rhythms in patients with persistent upper gastrointestinal symptoms. Compare 91133 office and facility rates across CMS payment localities in Connecticut.
Amounts below use the non-QP conversion factor for participating physicians. These are base physician payments before claim-level adjustments, not patient costs or total hospital charges.
What does Medicare pay for 91133 in Connecticut?
Connecticut has 1 payment locality in this comparison. Use the service location to choose the applicable amount. These are the supported base rates for the payment area shown below, using the same CMS release.
Office / nonfacility
$546.42
1 of 1 localities have a supported rate.
Payment area: Connecticut
One mapped payment locality.
Facility setting
No supported rate
These are locality ranges, not averages or address-specific quotes. A facility-setting amount covers the physician service; it does not include a hospital’s separate bill. Choose a locality below to inspect its calculation, compare other payment areas, or price a percentage of Medicare.
Gastrointestinal testing
About 91133: Electrogastrography with provocative testing
Electrogastrography with testing records gastric electrical activity during a challenge, helping evaluate abnormal stomach rhythms in patients with persistent upper gastrointestinal symptoms.
Electrogastrography with testing records electrical signals from the stomach before and during or after a challenge, commonly a meal, to assess gastric slow-wave patterns and their response. Gastroenterology practices may use it when persistent nausea, vomiting, or suspected gastric dysrhythmia prompts evaluation of gastric electrical function. Surface electrodes capture the signals, which are interpreted in relation to the test protocol.
Report 91133 when the electrogastrography includes a test or challenge; the recording without that test is represented by 91132. Documentation should identify the clinical indication, challenge performed, recording conditions, and interpretation of the resulting gastric electrical activity. CMS recognizes a professional portion for interpretation, reported with modifier 26, and a technical portion for equipment and staff, reported with modifier TC. Billing without either modifier represents the global service.
CMS billing rules for 91133
- Professional and technical components
- Diagnostic test with a professional component (modifier 26, interpretation) and a technical component (modifier TC, equipment and staff); billing without a modifier is the global service.
Where the value comes from
- Work RVU0.64 · 4%
- Practice expense (office) RVU14.55 · 96%
- Malpractice RVU0.03 · 0%
24
Medicare services in 2024 · #5827 by national volume
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.
91133 compared with similar codes
Office rates for Connecticut, from the same CMS release.
$1,899.86
91133 measures gastric electrical activity during a test. 91112 measures gastrointestinal transit and pressure using a wireless capsule.
$311.18
78264 evaluates gastric emptying with scintigraphic imaging. 91133 records gastric electrical activity during a challenge.
Compare 91133 by payment locality
Find the payment area for your service address, then open its rate page for calculation inputs, release history and the percentage-of-Medicare tool. A city may cross payment-area boundaries; the ZIP lookup above helps resolve the location.
1 of 1 payment localities
Connecticut →
Office / nonfacility
$546.42
Facility
Unavailable
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How this local rate is calculated
Each RVU component is multiplied by its own geographic practice cost index (GPCI). The three adjusted components are added, then multiplied by the conversion factor. These are the inputs used for 91133 in Connecticut.
PPRRVU2026_Oct_nonQPP.csv
11,643
- Code
- 91133
- Physician work
- 0.64
- Practice expense
- 14.55
- Malpractice
- 0.03
GPCI2026.csv
38
- Locality
- Connecticut
- Physician work
- 1.020
- Practice expense
- 1.077
- Malpractice
- 1.210
| Component | RVU | Locality factor | Adjusted |
|---|---|---|---|
| Physician work | 0.64 | × 1.020 | 0.6528 |
| Practice expense | 14.55 | × 1.077 | 15.6704 |
| Malpractice | 0.03 | × 1.210 | 0.0363 |
| Total RVUs | 16.3595 | ||
| Conversion factor | × 33.4009 | ||
Office / nonfacility rate, Connecticut$546.42
Explore RVUs, geographic factors and the full formula
Office / nonfacility
| Component | RVU | Local GPCI |
|---|---|---|
| Work | 0.64 | 1.02 |
| Practice expense | 14.55 | 1.077 |
| Malpractice | 0.03 | 1.21 |
(0.64 × 1.02 + 14.55 × 1.077 + 0.03 × 1.21) × $33.4009 = $546.42
The office and facility calculations use their respective practice-expense RVUs. The facility amount here is the physician fee, not a separate hospital or facility bill.
91133 billing questions
How does 91133 differ from 91132?
91133 includes electrogastrography with a test or challenge, commonly a meal challenge. 91132 represents electrogastrography without that test component.
Can the professional and technical portions be billed separately?
Yes. Modifier 26 identifies the professional interpretation, and modifier TC identifies the technical portion involving equipment and staff. Without either modifier, the claim represents the global service.
What documentation supports reporting 91133?
Record the reason for testing, the challenge performed, the recording conditions, and the interpretation of the gastric electrical findings.
Is a meal challenge required for 91133?
The service includes a test or challenge; a meal is a common example. The documentation should identify the test actually performed.
Where these rates come from
FeeBase calculates base physician payments from CMS work, practice-expense, and malpractice RVUs, adjusted by each locality’s geographic indices and the applicable conversion factor. Unavailable or separately priced services are labeled rather than assigned a made-up amount.
Source: RVU26D. Effective 2026-10-01 through the day before 2027-01-01.
11,64091132,,Electrogastrography,A,,0.51,14.00,,14.00,NA,0.03,14.54,14.54,1,XXX,0.00,0.00,0.00,0,0,0,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
11,64191132,26,Electrogastrography,A,,0.51,0.30,,0.30,,0.02,0.83,0.83,1,XXX,0.00,0.00,0.00,0,0,0,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
11,64291132,TC,Electrogastrography,A,,0.00,13.70,,13.70,NA,0.01,13.71,13.71,1,XXX,0.00,0.00,0.00,0,0,0,0,0,9,,33.4009,01,0,99,0.00,0.00,0.00
11,64391133,,Electrogastrography w/test,A,,0.64,14.55,,14.55,NA,0.03,15.22,15.22,1,XXX,0.00,0.00,0.00,0,0,0,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
11,64491133,26,Electrogastrography w/test,A,,0.64,0.37,,0.37,,0.02,1.03,1.03,1,XXX,0.00,0.00,0.00,0,0,0,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
11,64591133,TC,Electrogastrography w/test,A,,0.00,14.18,,14.18,NA,0.01,14.19,14.19,1,XXX,0.00,0.00,0.00,0,0,0,0,0,9,,33.4009,03,0,99,0.00,0.00,0.00
11,64691200,,Liver elastography,A,,0.20,0.79,,0.79,NA,0.02,1.01,1.01,1,XXX,0.00,0.00,0.00,0,0,0,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
3501112,CA,70,YUBA CITY,1.017,1.096,0.536
3601112,CA,75,REST OF CALIFORNIA,1.017,1.096,0.536
3704112,CO,01,COLORADO,1.012,1.064,0.781
3813102,CT,00,CONNECTICUT,1.020,1.077,1.210
3912202,DC,01,DC + MD/VA SUBURBS,1.054,1.178,1.113
4012102,DE,01,DELAWARE,1.005,0.988,0.899
4109102,FL,03,FORT LAUDERDALE,1.000,1.013,1.808