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Procedure price report · Other gastrointestinal diagnostic procedures

Stomach muscle pressure study

CPT 91020the billing code this page is about

A catheter measures the pressure and muscle activity of the stomach to assess how it contracts and empties; includes interpretation and report.

Hospitals typically charge $846 cash for this outpatient procedure — the median across 431 hospitals that filed a usable cash price; the average of the middle 60% is $1,006. Most fall between $341 and $2,332 (20th–80th percentile).

Hospitals
431
States
45
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 431 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
$141$420$846$1,943$2,812

The most expensive tenth of hospitals charges at least 20× what the cheapest tenth charges ($141 vs $2,812).

How the prices are spread

$83 – $121: 9 hospitals$83$121 – $176: 21 hospitals$176 – $257: 27 hospitals$176$257 – $376: 19 hospitals$376 – $548: 46 hospitals$376$548 – $801: 65 hospitals$801 – $1,169: 57 hospitals$801$1,169 – $1,707: 46 hospitals$1,707 – $2,493: 45 hospitals$1,707$2,493 – $3,641: 56 hospitals$2,493median $846price bands are equal on a log scale
Hospitals per price band (391 of 431 — the bands cover the 5th to 95th percentile)
FromToHospitals
$83$1219
$121$17621
$176$25727
$257$37619
$376$54846
$548$80165
$801$1,16957
$1,169$1,70746
$1,707$2,49345
$2,493$3,64156

Against Medicare

Medicare pays (OPPS 2026, national rate)$381
Median cash price$846
Cash as a multiple of Medicare2.2×

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 $846.

Alaska: 2 hospitals filed a usable price — fewer than 10, so no figureAKMaine: 2 hospitals filed a usable price — fewer than 10, so no figureMEVermont: 2 hospitals filed a usable price — fewer than 10, so no figureVTNew Hampshire: 7 hospitals filed a usable price — fewer than 10, so no figureNHWashington: 5 hospitals filed a usable price — fewer than 10, so no figureWAIdaho: 6 hospitals filed a usable price — fewer than 10, so no figureIDMontana: 1 hospital filed a usable price — fewer than 10, so no figureMTNorth Dakota: no hospital in the corpus filed a usable priceNDMinnesota: median $616 across 10 hospitalsMN$616Illinois: median $300 across 23 hospitalsIL$300Wisconsin: 4 hospitals filed a usable price — fewer than 10, so no figureWIMichigan: 7 hospitals filed a usable price — fewer than 10, so no figureMINew York: median $628 across 23 hospitalsNY$628Massachusetts: 7 hospitals filed a usable price — fewer than 10, so no figureMAOregon: 2 hospitals filed a usable price — fewer than 10, so no figureORNevada: 1 hospital filed a usable price — fewer than 10, so no figureNVWyoming: 3 hospitals filed a usable price — fewer than 10, so no figureWYSouth Dakota: no hospital in the corpus filed a usable priceSDIowa: median $184 across 16 hospitalsIA$184Indiana: median $1,074 across 17 hospitalsIN$1,074Ohio: median $1,796 across 26 hospitalsOH$1,796Pennsylvania: median $622 across 25 hospitalsPA$622New Jersey: median $587 across 26 hospitalsNJ$587Connecticut: 2 hospitals filed a usable price — fewer than 10, so no figureCTRhode Island: no hospital in the corpus filed a usable priceRICalifornia: median $2,733 across 46 hospitalsCA$2,733Utah: no hospital in the corpus filed a usable priceUTColorado: 3 hospitals filed a usable price — fewer than 10, so no figureCONebraska: 6 hospitals filed a usable price — fewer than 10, so no figureNEMissouri: 5 hospitals filed a usable price — fewer than 10, so no figureMOKentucky: median $479 across 11 hospitalsKY$479West Virginia: 1 hospital filed a usable price — fewer than 10, so no figureWVVirginia: 5 hospitals filed a usable price — fewer than 10, so no figureVAMaryland: 1 hospital filed a usable price — fewer than 10, so no figureMDDelaware: no hospital in the corpus filed a usable priceDEArizona: 4 hospitals filed a usable price — fewer than 10, so no figureAZNew Mexico: 4 hospitals filed a usable price — fewer than 10, so no figureNMKansas: 3 hospitals filed a usable price — fewer than 10, so no figureKSArkansas: 1 hospital filed a usable price — fewer than 10, so no figureARTennessee: 8 hospitals filed a usable price — fewer than 10, so no figureTNNorth Carolina: 8 hospitals filed a usable price — fewer than 10, so no figureNCSouth Carolina: median $976 across 10 hospitalsSC$976Oklahoma: median $141 across 12 hospitalsOK$141Louisiana: 8 hospitals filed a usable price — fewer than 10, so no figureLAMississippi: 3 hospitals filed a usable price — fewer than 10, so no figureMSAlabama: 5 hospitals filed a usable price — fewer than 10, so no figureALGeorgia: 6 hospitals filed a usable price — fewer than 10, so no figureGAHawaii: 2 hospitals filed a usable price — fewer than 10, so no figureHITexas: median $1,607 across 34 hospitalsTX$1,607Florida: median $1,163 across 28 hospitalsFL$1,163
Cash price by state, most expensive first. National median $846. A state needs at least 10 hospitals with a usable price to show a figure.
StateHospitalsMedianvs national20th–80th
California CA46$2,733+223%$798 – $3,750
Ohio OH26$1,796+112%$612 – $1,943
Texas TX34$1,607+90%$1,488 – $3,123
Florida FL28$1,163+38%$1,073 – $2,185
Indiana IN17$1,074+27%$63 – $1,425
South Carolina SC10$976+15%$845 – $1,045
New York NY23$628−26%$466 – $628
Pennsylvania PA25$622−26%$48 – $972
Minnesota MN10$616−27%$506 – $755
New Jersey NJ26$587−31%$382 – $680
Kentucky KY11$479−43%$245 – $611
Illinois IL23$300−65%$124 – $2,332
Iowa IA16$184−78%$184 – $490
Oklahoma OK12$141−83%$141 – $141
Louisiana LA8not enough hospitals filed a usable price
North Carolina NC8not enough hospitals filed a usable price
Tennessee TN8not enough hospitals filed a usable price
Massachusetts MA7not enough hospitals filed a usable price
Michigan MI7not enough hospitals filed a usable price
New Hampshire NH7not enough hospitals filed a usable price
Georgia GA6not enough hospitals filed a usable price
Idaho ID6not enough hospitals filed a usable price
Nebraska NE6not enough hospitals filed a usable price
Alabama AL5not enough hospitals filed a usable price
Missouri MO5not enough hospitals filed a usable price
Virginia VA5not enough hospitals filed a usable price
Washington WA5not enough hospitals filed a usable price
Arizona AZ4not enough hospitals filed a usable price
New Mexico NM4not enough hospitals filed a usable price
Wisconsin WI4not enough hospitals filed a usable price
Colorado CO3not enough hospitals filed a usable price
Kansas KS3not enough hospitals filed a usable price
Mississippi MS3not enough hospitals filed a usable price
Wyoming WY3not enough hospitals filed a usable price
Alaska AK2not enough hospitals filed a usable price
Connecticut CT2not enough hospitals filed a usable price
Hawaii HI2not enough hospitals filed a usable price
Maine ME2not enough hospitals filed a usable price
Oregon OR2not enough hospitals filed a usable price
Vermont VT2not enough hospitals filed a usable price
Arkansas AR1not enough hospitals filed a usable price
Maryland MD1not enough hospitals filed a usable price
Montana MT1not enough hospitals filed a usable price
Nevada NV1not enough hospitals filed a usable price
West Virginia WV1not 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 $846.

Cash price by hospital segment. A segment needs at least 20 hospitals to show a figure.
SegmentHospitalsMedian20th–80th
Hospital type
Acute care355$721$300 – $2,185
Children’s34$2,502$917 – $3,441
Critical access40$1,425$184 – $1,784
Ownership
For-profit51$845$350 – $2,132
Government58$765$435 – $2,185
Non-profit320$917$300 – $2,332
System affiliation
Part of a system372$943$341 – $2,332
Independent59$633$320 – $1,416

Cash price vs list price

Median list price (chargemaster)$1,720
Median cash price$846
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

281 hospitals filed a usable inpatient cash price for this code. The median is $1,073 and the average of the middle 60% is $1,164; most fall between $245 and $2,397.

Cash price percentiles, inpatient, across 281 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
$141$458$1,073$2,132$3,123

The most expensive tenth of hospitals charges at least 22× what the cheapest tenth charges ($141 vs $3,123).

Of the 301 hospitals that filed this code inpatient, 281 gave a usable cash price; 10 carried a plausibility flag, 0 filed a number their own filing marks as not a price, 0 gave an estimate, and 10 a list price only.

How complete is this

431 of the 3,956 hospitals with a price file in our corpus (11%) filed a usable outpatient cash price for this code, and those are the hospitals every figure on this page is computed from.

What the 457 hospitals that filed this code at all gave us
Usable cash price — counted431
Cash price carrying a plausibility flag — shown on the compare tool, excluded here16
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 — excluded10
Hospitals that filed this code457

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 4, 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 PR Gastric Motility Study.

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 muscle pressure study (CPT 91020) — cash price report,” computed September 25, 2026. https://hospitalrates.com/procedures/cpt-91020-stomach-muscle-pressure-study