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Procedure price report · Other gastrointestinal diagnostic procedures

Esophagus reflux test with impedance probe, 1 hour or less

CPT 91037the billing code this page is about

A nose-placed catheter with impedance sensors records movement of liquid and gas refluxing into the esophagus for up to one hour; includes interpretation and report.

Hospitals typically charge $562 cash for this outpatient procedure — the median across 989 hospitals that filed a usable cash price; the average of the middle 60% is $624. Most fall between $246 and $1,190 (20th–80th percentile).

Hospitals
989
States
49
Filings dated
Mar 2023 – 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 989 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
$125$293$562$1,047$1,636

The most expensive tenth of hospitals charges at least 13× what the cheapest tenth charges ($125 vs $1,636).

How the prices are spread

$80 – $112: 34 hospitals$80$112 – $158: 38 hospitals$158 – $222: 47 hospitals$158$222 – $313: 99 hospitals$313 – $439: 124 hospitals$313$439 – $618: 135 hospitals$618 – $869: 157 hospitals$618$869 – $1,221: 122 hospitals$1,221 – $1,717: 96 hospitals$1,221$1,717 – $2,414: 39 hospitals$1,717median $562price bands are equal on a log scale
Hospitals per price band (891 of 989 — the bands cover the 5th to 95th percentile)
FromToHospitals
$80$11234
$112$15838
$158$22247
$222$31399
$313$439124
$439$618135
$618$869157
$869$1,221122
$1,221$1,71796
$1,717$2,41439

Against Medicare

Medicare pays (OPPS 2026, national rate)$221
Median cash price$562
Cash as a multiple of Medicare2.5×

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 $562.

Alaska: 2 hospitals filed a usable price — fewer than 10, so no figureAKMaine: 3 hospitals filed a usable price — fewer than 10, so no figureMEVermont: 2 hospitals filed a usable price — fewer than 10, so no figureVTNew Hampshire: 9 hospitals filed a usable price — fewer than 10, so no figureNHWashington: median $452 across 22 hospitalsWA$452Idaho: median $823 across 10 hospitalsID$823Montana: 4 hospitals filed a usable price — fewer than 10, so no figureMTNorth Dakota: 3 hospitals filed a usable price — fewer than 10, so no figureNDMinnesota: median $615 across 31 hospitalsMN$615Illinois: median $355 across 34 hospitalsIL$355Wisconsin: median $498 across 46 hospitalsWI$498Michigan: median $80 across 32 hospitalsMI$80New York: median $369 across 43 hospitalsNY$369Massachusetts: median $778 across 15 hospitalsMA$778Oregon: median $968 across 15 hospitalsOR$968Nevada: 5 hospitals 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 $120 across 19 hospitalsIA$120Indiana: median $495 across 28 hospitalsIN$495Ohio: median $1,190 across 66 hospitalsOH$1,190Pennsylvania: median $310 across 52 hospitalsPA$310New Jersey: median $345 across 33 hospitalsNJ$345Connecticut: 8 hospitals filed a usable price — fewer than 10, so no figureCTRhode Island: 6 hospitals filed a usable price — fewer than 10, so no figureRICalifornia: median $1,254 across 75 hospitalsCA$1,254Utah: 1 hospital filed a usable price — fewer than 10, so no figureUTColorado: median $1,161 across 23 hospitalsCO$1,161Nebraska: 8 hospitals filed a usable price — fewer than 10, so no figureNEMissouri: median $623 across 26 hospitalsMO$623Kentucky: median $406 across 15 hospitalsKY$406West Virginia: 5 hospitals filed a usable price — fewer than 10, so no figureWVVirginia: median $579 across 11 hospitalsVA$579Maryland: 3 hospitals filed a usable price — fewer than 10, so no figureMDDelaware: 2 hospitals filed a usable price — fewer than 10, so no figureDEArizona: median $543 across 14 hospitalsAZ$543New Mexico: 7 hospitals filed a usable price — fewer than 10, so no figureNMKansas: median $341 across 10 hospitalsKS$341Arkansas: 7 hospitals filed a usable price — fewer than 10, so no figureARTennessee: median $196 across 13 hospitalsTN$196North Carolina: median $597 across 27 hospitalsNC$597South Carolina: median $845 across 30 hospitalsSC$845Oklahoma: median $96 across 18 hospitalsOK$96Louisiana: median $273 across 12 hospitalsLA$273Mississippi: median $196 across 18 hospitalsMS$196Alabama: 7 hospitals filed a usable price — fewer than 10, so no figureALGeorgia: median $733 across 25 hospitalsGA$733Hawaii: 6 hospitals filed a usable price — fewer than 10, so no figureHITexas: median $800 across 82 hospitalsTX$800Florida: median $712 across 53 hospitalsFL$712
Cash price by state, most expensive first. National median $562. A state needs at least 10 hospitals with a usable price to show a figure.
StateHospitalsMedianvs national20th–80th
California CA75$1,254+123%$353 – $1,823
Ohio OH66$1,190+112%$621 – $1,704
Colorado CO23$1,161+107%$861 – $1,627
Oregon OR15$968+72%$88 – $968
South Carolina SC30$845+50%$545 – $1,142
Idaho ID10$823+47%$235 – $863
Texas TX82$800+42%$354 – $1,284
Massachusetts MA15$778+39%$440 – $1,045
Georgia GA25$733+31%$167 – $2,414
Florida FL53$712+27%$239 – $1,522
Missouri MO26$623+11%$436 – $1,066
Minnesota MN31$615+9%$245 – $1,025
North Carolina NC27$597+6%$347 – $622
Virginia VA11$579+3%$517 – $2,605
Arizona AZ14$543−3%$427 – $1,601
Wisconsin WI46$498−11%$488 – $824
Indiana IN28$495−12%$69 – $697
Washington WA22$452−19%$395 – $824
Kentucky KY15$406−28%$248 – $1,250
New York NY43$369−34%$254 – $952
Illinois IL34$355−37%$131 – $1,370
New Jersey NJ33$345−39%$263 – $963
Kansas KS10$341−39%$163 – $872
Pennsylvania PA52$310−45%$172 – $671
Louisiana LA12$273−51%$244 – $369
Mississippi MS18$196−65%$127 – $318
Tennessee TN13$196−65%$58 – $545
Iowa IA19$120−79%$120 – $551
Oklahoma OK18$96−83%$96 – $909
Michigan MI32$80−86%$61 – $297
New Hampshire NH9not enough hospitals filed a usable price
Connecticut CT8not enough hospitals filed a usable price
Nebraska NE8not enough hospitals filed a usable price
Alabama AL7not enough hospitals filed a usable price
Arkansas AR7not enough hospitals filed a usable price
New Mexico NM7not enough hospitals filed a usable price
Hawaii HI6not enough hospitals filed a usable price
Rhode Island RI6not enough hospitals filed a usable price
Nevada NV5not enough hospitals filed a usable price
West Virginia WV5not enough hospitals filed a usable price
Montana MT4not enough hospitals filed a usable price
Maryland MD3not enough hospitals filed a usable price
Maine ME3not enough hospitals filed a usable price
North Dakota ND3not enough hospitals filed a usable price
Wyoming WY3not enough hospitals filed a usable price
Alaska AK2not enough hospitals filed a usable price
Delaware DE2not enough hospitals filed a usable price
Vermont VT2not enough hospitals filed a usable price
Utah UT1not 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 $562.

Cash price by hospital segment. A segment needs at least 20 hospitals to show a figure.
SegmentHospitalsMedian20th–80th
Hospital type
Acute care849$565$252 – $1,190
Children’s23$852$324 – $3,051
Critical access110$498$159 – $968
Ownership
For-profit105$656$260 – $1,229
Government127$539$168 – $952
Non-profit750$560$252 – $1,179
System affiliation
Part of a system870$564$249 – $1,190
Independent119$540$225 – $1,114

Cash price vs list price

Median list price (chargemaster)$1,079
Median cash price$562
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

725 hospitals filed a usable inpatient cash price for this code. The median is $649 and the average of the middle 60% is $696; most fall between $255 and $1,254.

Cash price percentiles, inpatient, across 725 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
$131$326$649$1,150$1,704

The most expensive tenth of hospitals charges at least 13× what the cheapest tenth charges ($131 vs $1,704).

Of the 765 hospitals that filed this code inpatient, 725 gave a usable cash price; 15 carried a plausibility flag, 0 filed a number their own filing marks as not a price, 0 gave an estimate, and 25 a list price only.

How complete is this

989 of the 3,956 hospitals with a price file in our corpus (25%) filed a usable outpatient cash price for this code, and those are the hospitals every figure on this page is computed from.

What the 1,047 hospitals that filed this code at all gave us
Usable cash price — counted989
Cash price carrying a plausibility flag — shown on the compare tool, excluded here28
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 — excluded30
Hospitals that filed this code1,047

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 Gastroesophag Reflx Test W/Intrluml Imped Eltrd.

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, “Esophagus reflux test with impedance probe, 1 hour or less (CPT 91037) — cash price report,” computed September 25, 2026. https://hospitalrates.com/procedures/cpt-91037-esophagus-reflux-test-with-impedance-probe-1-hour-or-less