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Procedure price report · Other gastrointestinal diagnostic procedures

Stomach electrical recording with provocation testing

CPT 91133the billing code this page is about

Electrodes on the abdomen record the stomach's electrical rhythm before and after a challenge such as a test meal or medication.

Hospitals typically charge $172 cash for this outpatient procedure — the median across 175 hospitals that filed a usable cash price; the average of the middle 60% is $208. Most fall between $78 and $418 (20th–80th percentile).

Hospitals
175
States
30
Filings dated
Nov 2024 – Sep 2026
Computed
September 25, 2026
Prices checked
through September 25, 2026

Median: half of hospitals filed less, half more — and it is a price some hospital actually filed. Average of the middle 60%: the mean of the prices between the 20th and 80th percentiles. We never publish the plain average, the lowest or the highest price: the extremes in hospital price files are chargemaster artefacts, not prices anyone pays.

What hospitals charge, from cheapest to most expensive

Cash price percentiles, outpatient, across 175 hospitals. Each figure is a price a hospital filed. 10th: one in ten hospitals charges less; 25th: a quarter charge less; Median: half charge less; 75th: three quarters charge less; 90th: nine in ten charge less.
10th25thMedian75th90th
$46$78$172$385$437

The most expensive tenth of hospitals charges at least 9.4× what the cheapest tenth charges ($46 vs $437).

How the prices are spread

$33 – $45: 11 hospitals$33$45 – $60: 5 hospitals$60 – $80: 25 hospitals$60$80 – $107: 6 hospitals$107 – $143: 13 hospitals$107$143 – $192: 30 hospitals$192 – $257: 18 hospitals$192$257 – $344: 11 hospitals$344 – $461: 37 hospitals$344$461 – $618: 6 hospitals$461median $172price bands are equal on a log scale
Hospitals per price band (162 of 175 — the bands cover the 5th to 95th percentile)
FromToHospitals
$33$4511
$45$605
$60$8025
$80$1076
$107$14313
$143$19230
$192$25718
$257$34411
$344$46137
$461$6186

Against Medicare

Medicare pays (OPPS 2026, national rate)$136
Median cash price$172
Cash as a multiple of Medicare1.27×

The Medicare figure is the national unadjusted OPPS rate for this code — what Medicare itself pays a hospital before local wage adjustment. It is a benchmark, not a price anyone is charged.

By state

The median cash price in each state, against the national median of $172.

Alaska: no hospital in the corpus filed a usable priceAKMaine: no hospital in the corpus filed a usable priceMEVermont: 1 hospital filed a usable price — fewer than 10, so no figureVTNew Hampshire: 4 hospitals filed a usable price — fewer than 10, so no figureNHWashington: 1 hospital filed a usable price — fewer than 10, so no figureWAIdaho: no hospital in the corpus filed a usable priceIDMontana: 1 hospital filed a usable price — fewer than 10, so no figureMTNorth Dakota: no hospital in the corpus filed a usable priceNDMinnesota: no hospital in the corpus filed a usable priceMNIllinois: median $62 across 11 hospitalsIL$62Wisconsin: no hospital in the corpus filed a usable priceWIMichigan: 5 hospitals filed a usable price — fewer than 10, so no figureMINew York: median $153 across 18 hospitalsNY$153Massachusetts: 1 hospital filed a usable price — fewer than 10, so no figureMAOregon: no hospital in the corpus filed a usable priceORNevada: 1 hospital filed a usable price — fewer than 10, so no figureNVWyoming: 2 hospitals filed a usable price — fewer than 10, so no figureWYSouth Dakota: no hospital in the corpus filed a usable priceSDIowa: median $78 across 13 hospitalsIA$78Indiana: no hospital in the corpus filed a usable priceINOhio: median $385 across 16 hospitalsOH$385Pennsylvania: 6 hospitals filed a usable price — fewer than 10, so no figurePANew Jersey: median $143 across 10 hospitalsNJ$143Connecticut: no hospital in the corpus filed a usable priceCTRhode Island: no hospital in the corpus filed a usable priceRICalifornia: median $437 across 24 hospitalsCA$437Utah: no hospital in the corpus filed a usable priceUTColorado: 2 hospitals filed a usable price — fewer than 10, so no figureCONebraska: 2 hospitals filed a usable price — fewer than 10, so no figureNEMissouri: no hospital in the corpus filed a usable priceMOKentucky: 2 hospitals filed a usable price — fewer than 10, so no figureKYWest Virginia: no hospital in the corpus filed a usable priceWVVirginia: no hospital in the corpus filed a usable priceVAMaryland: 1 hospital filed a usable price — fewer than 10, so no figureMDDelaware: no hospital in the corpus filed a usable priceDEArizona: 1 hospital filed a usable price — fewer than 10, so no figureAZNew Mexico: 1 hospital filed a usable price — fewer than 10, so no figureNMKansas: 2 hospitals filed a usable price — fewer than 10, so no figureKSArkansas: 1 hospital filed a usable price — fewer than 10, so no figureARTennessee: 7 hospitals filed a usable price — fewer than 10, so no figureTNNorth Carolina: no hospital in the corpus filed a usable priceNCSouth Carolina: 5 hospitals filed a usable price — fewer than 10, so no figureSCOklahoma: median $65 across 12 hospitalsOK$65Louisiana: 2 hospitals filed a usable price — fewer than 10, so no figureLAMississippi: 2 hospitals filed a usable price — fewer than 10, so no figureMSAlabama: no hospital in the corpus filed a usable priceALGeorgia: no hospital in the corpus filed a usable priceGAHawaii: no hospital in the corpus filed a usable priceHITexas: median $253 across 18 hospitalsTX$253Florida: 3 hospitals filed a usable price — fewer than 10, so no figureFL
Cash price by state, most expensive first. National median $172. A state needs at least 10 hospitals with a usable price to show a figure.
StateHospitalsMedianvs national20th–80th
California CA24$437+154%$437 – $437
Ohio OH16$385+124%$385 – $385
Texas TX18$253+47%$253 – $253
New York NY18$153−11%$153 – $166
New Jersey NJ10$143−17%$141 – $152
Iowa IA13$78−55%$78 – $78
Oklahoma OK12$65−62%$65 – $65
Illinois IL11$62−64%$33 – $92
Tennessee TN7not enough hospitals filed a usable price
Pennsylvania PA6not enough hospitals filed a usable price
Michigan MI5not enough hospitals filed a usable price
South Carolina SC5not enough hospitals filed a usable price
New Hampshire NH4not enough hospitals filed a usable price
Florida FL3not enough hospitals filed a usable price
Colorado CO2not enough hospitals filed a usable price
Kansas KS2not enough hospitals filed a usable price
Kentucky KY2not enough hospitals filed a usable price
Louisiana LA2not enough hospitals filed a usable price
Mississippi MS2not enough hospitals filed a usable price
Nebraska NE2not enough hospitals filed a usable price
Wyoming WY2not enough hospitals filed a usable price
Arkansas AR1not enough hospitals filed a usable price
Arizona AZ1not enough hospitals filed a usable price
Massachusetts MA1not enough hospitals filed a usable price
Maryland MD1not enough hospitals filed a usable price
Montana MT1not enough hospitals filed a usable price
New Mexico NM1not enough hospitals filed a usable price
Nevada NV1not enough hospitals filed a usable price
Vermont VT1not enough hospitals filed a usable price
Washington WA1not enough hospitals filed a usable price

Hospitals like yours

The same distribution cut by the kind of hospital. Hospital type and ownership come from CMS; a hospital counts as part of a system when its price file is shared with at least one other hospital under the same brand. The national median is $172.

Cash price by hospital segment. A segment needs at least 20 hospitals to show a figure.
SegmentHospitalsMedian20th–80th
Hospital type
Acute care159$172$78 – $418
Children’s6fewer than 20 hospitals
Critical access10fewer than 20 hospitals
Ownership
For-profit20$253$33 – $323
Government21$153$68 – $153
Non-profit134$183$78 – $437
System affiliation
Part of a system151$172$78 – $385
Independent24$172$62 – $442

Cash price vs list price

Median list price (chargemaster)$421
Median cash price$172
Cash as a share of list, median hospital60%

At the typical hospital, asking for the cash price cuts the list price by about 40%. The share is the median of each hospital’s own cash ÷ list ratio, over hospitals that filed both — not the ratio of the two medians above.

The same procedure, inpatient

105 hospitals filed a usable inpatient cash price for this code. The median is $253 and the average of the middle 60% is $260; most fall between $65 and $437.

Cash price percentiles, inpatient, across 105 hospitals. Each figure is a price a hospital filed. 10th: one in ten hospitals charges less; 25th: a quarter charge less; Median: half charge less; 75th: three quarters charge less; 90th: nine in ten charge less.
10th25thMedian75th90th
$46$78$253$437$437

The most expensive tenth of hospitals charges at least 9.4× what the cheapest tenth charges ($46 vs $437).

Of the 114 hospitals that filed this code inpatient, 105 gave a usable cash price; 8 carried a plausibility flag, 0 filed a number their own filing marks as not a price, 0 gave an estimate, and 1 a list price only.

How complete is this

175 of the 3,956 hospitals with a price file in our corpus (4%) filed a usable outpatient cash price for this code, and those are the hospitals every figure on this page is computed from.

What the 179 hospitals that filed this code at all gave us
Usable cash price — counted175
Cash price carrying a plausibility flag — shown on the compare tool, excluded here3
A number the filing itself marks as not a price (a placeholder, a ratio) — excluded0
An estimate rather than a filed cash price — excluded0
A list price only, no cash figure — excluded1
Hospitals that filed this code179

Sections not shown for this setting

  • Since our last snapshot: there is no earlier snapshot at least 90 days older than this one yet.

We last checked these hospitals’ price files for changes between September 5, 2026 and September 25, 2026; the figures were computed September 25, 2026 from filings loaded through September 25, 2026. The percentiles and averages use only the “counted” row.

Related procedures

Part of the Other gastrointestinal diagnostic procedures family.

Hospitals file this code under descriptions such as Electrogastrography Dx Transcut W/Provoctve Tstg|PROFESSIONAL COMPONENT.

Method

Source
The machine-readable price files every U.S. hospital is required by CMS to publish, parsed per hospital. Nothing is surveyed, sampled or modelled.
What counts
One cash (self-pay) price per hospital for this code and setting. A hospital’s own filing can rule its number out — a placeholder, a “not applicable” note, a list price standing in for cash — and our plausibility checks can flag a price far below what every other hospital files. Both kinds are disclosed above and excluded from the statistics; on the compare tool a flagged price is still shown.
Statistics
Percentiles are discrete: each is a price some hospital filed. The average is the mean of the prices between the 20th and 80th percentiles. We never publish the plain mean, the minimum or the maximum. A state needs 10 hospitals and a segment 20 to show a figure; otherwise the row shows its count and no number. Medicare is the national unadjusted OPPS rate where one exists.
Names
Procedure names on these pages are our own plain-language titles, not the AMA’s copyrighted CPT descriptors. The code is the identity.

The full rules — sources, statistics, thresholds, limitations — are on the methodology page.

Download this page’s figures: JSON · CSV. Aggregates only — the per-hospital prices are on the compare tool.

Cite: HospitalRates.com, “Stomach electrical recording with provocation testing (CPT 91133) — cash price report,” computed September 25, 2026. https://hospitalrates.com/procedures/cpt-91133-stomach-electrical-recording-with-provocation-testing