Billing code 91020: Gastric motilityMedicare rate & RVUs in Nevada
Reports manometric assessment of stomach motility, using pressure measurements to evaluate gastric motor function when a clinician suspects a motility disorder.
Medicare pays $308.44 for 91020 in the office in Nevada (Nevada**). 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.
On this page 9 sections
What 91020 covers
This study measures pressure activity in the stomach with a catheter-based manometric technique to assess gastric motor function. It may be part of an evaluation for suspected gastric dysmotility, including persistent nausea or vomiting. Gastroenterologists and other clinicians who evaluate gastrointestinal motility typically order or perform the test in a facility-based setting; Medicare recorded facility services for this code in 2024.
Report 91020 for the gastric manometric service, supported by documentation of the clinical indication, measurements obtained, and the clinician’s interpretation and report. It is a diagnostic test with separately priced professional and technical components: modifier 26 identifies interpretation, modifier TC identifies equipment and staff, and no modifier represents the global service. The 0-day global period includes same-day preoperative and postoperative care. Modifier 50 is inappropriate. Assistant-at-surgery payment requires documented medical necessity; co-surgeons and team surgery are not permitted.
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.
91020 in Nevada**
| Payment locality | Office | Facility |
|---|---|---|
| Nevada** | $308.44 | Unavailable |
How the 91020 rate is calculated
Each of 91020’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 · 91020
RVUs × geographic indexes × conversion factor
Swap in your local Medicare rate.
Work 1.40Practice expense 7.76Malpractice 0.08
All indexes start at 1.000 (the national rate). Enter a ZIP or drag a slider.
Payment rules and modifiers for 91020
The CMS indicators that decide how 91020 is paid alongside other services.
CMS payment indicators · 91020
Gastric motility
| Rule | CMS value | What it means |
|---|---|---|
| Global period | 000 | Same-day global: pre- and post-op care on the day of the procedure is included. |
| 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
91020 without 26 · national office
$308.62
Gastric motility
91020-26 · Professional component
$76.15
Pays only the interpretation and report.
91020 compared with similar codes
Compare codes
91020 vs 91010 vs 91013 vs 91022: national Medicare rates
Swap in your local Medicare rate.
How to choose
- 91010Esophageal manometry
- Choose 91020 for gastric manometry and 91010 for esophageal motility manometry; the studied organ determines the code.
- 91013Esophageal motility
- 91013 is an esophageal motility study involving perfusion or stimulation. It does not represent gastric manometry.
- 91022Motility study
- 91022 evaluates duodenal motility manometrically. Use 91020 when the pressure study assesses the stomach.
91020 billing questions
How is 91020 different from 91010?
91020 evaluates gastric pressure activity. Code 91010 is for esophageal motility testing, so select based on the organ studied.
When would 91022 be reported instead?
91022 represents manometric evaluation of duodenal motility. Use 91020 for the stomach and 91022 for the duodenum.
Can the professional and technical portions be billed separately?
Yes. Report modifier 26 for the professional interpretation and report, or modifier TC for the equipment and staff. Without either modifier, the claim represents the global service.
What documentation supports 91020?
Document the reason for testing, the gastric manometric measurements performed, and the interpretation and report. The record should support that the study assessed gastric rather than esophageal or duodenal motility.
Should modifier 50 be used for this study?
No. The CMS bilateral adjustment does not apply, and modifier 50 is inappropriate for this service.
How does the 0-day global period affect same-day care?
Same-day preoperative and postoperative care is included in the service under the 0-day global period.
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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