Electrogastrography w/test
Electrogastrography with stimulation testing to measure stomach electrical activity shows a potential difference of $381.10 depending on care setting, making bill verification essential before your procedure.
About the analyst
Elena Vasquez leads hospital billing pattern analysis at BillRazor Research. She focuses on identifying overcharges, markup outliers, and patient advocacy strategies. Expertise: hospital billing patterns, overcharge analysis, patient advocacy.
Electrogastrography with stimulation test (CPT 91133) measures electrical activity in the stomach muscles before and after a meal or medication to evaluate gastric motility disorders. Patients with unexplained nausea, vomiting, or gastroparesis symptoms typically receive this diagnostic test. This procedure carries a Medicare benchmark reimbursement of approximately $200-300, with facility fees potentially adding significant costs depending on the care setting.
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Facility rate
$511
National Medicare benchmark
Non-facility rate
$99
Office setting benchmark
Data sources
3
23 data points
Key insights for CPT 91133
Facility vs office setting
$412 differenceNon-facility setting is less expensive for this procedure
What this procedure costs across different settings
The same procedure can cost very different amounts depending on where it's performed. These are the Medicare-allowed amounts — what hospitals actually charge can be 3-10x higher.
| Setting | Medicare rate | vs lowest |
|---|---|---|
| Facility (physician office) | $511 | +416% |
| Non-facility (office) | $99 | Lowest |
| Outpatient (APC) | $129 | +30% |
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About this data
Rates shown are from the 2026 Medicare Physician Fee Schedule, Hospital Outpatient Prospective Payment System (OPPS), Ambulatory Surgery Center Payment System, Clinical Laboratory Fee Schedule, Durable Medical Equipment Fee Schedule, and CMS Inpatient Prospective Payment System (DRG weights). Regional adjustments use CMS Geographic Practice Cost Indices (GPCI). Hospital charges are from CMS Hospital Price Transparency machine-readable files. All data is publicly available under federal law (45 CFR Part 180).
This data is for informational purposes only and does not constitute medical or financial advice. Actual costs depend on insurance coverage, negotiated rates, and individual circumstances.
Related procedures
Related pricing data
Data: Medicare Physician Fee Schedule, CMS Inpatient PPS (IPPS), Outpatient PPS (OPPS), ASC Payment System, Clinical Lab Fee Schedule (CLFS), National Average Drug Acquisition Cost (NADAC). FY 2024 data. All publicly available from CMS.
Methodology: Facility rate applies when the procedure is performed in a hospital or ASC. Non-facility rate applies in a physician office. GPCI adjustments reflect regional cost-of-living differences.
This information is for educational purposes only and is not medical, financial, or legal advice. Actual costs depend on your insurance and provider. We recommend verifying costs directly with your provider. Full methodology · Terms of use