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Procedure price report · Other diagnostic procedures on lung and bronchus

High altitude simulation test with oxygen adjustment

CPT 94453the billing code this page is about

The same low-oxygen breathing test as the basic version, plus stepwise adjustment of supplemental oxygen to find the amount needed at altitude.

Hospitals typically charge $297 cash for this outpatient procedure — the median across 633 hospitals that filed a usable cash price; the average of the middle 60% is $294. Most fall between $137 and $472 (20th–80th percentile).

Hospitals
633
States
47
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 633 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
$59$153$297$456$766

The most expensive tenth of hospitals charges at least 13× what the cheapest tenth charges ($59 vs $766).

How the prices are spread

$36 – $52: 30 hospitals$36$52 – $73: 12 hospitals$73 – $104: 24 hospitals$73$104 – $148: 49 hospitals$148 – $211: 91 hospitals$148$211 – $299: 86 hospitals$299 – $425: 143 hospitals$299$425 – $604: 78 hospitals$604 – $859: 42 hospitals$604$859 – $1,220: 25 hospitals$859median $297price bands are equal on a log scale
Hospitals per price band (580 of 633 — the bands cover the 5th to 95th percentile)
FromToHospitals
$36$5230
$52$7312
$73$10424
$104$14849
$148$21191
$211$29986
$299$425143
$425$60478
$604$85942
$859$1,22025

Against Medicare

Medicare pays (OPPS 2026, national rate)$136
Median cash price$297
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 $297.

Alaska: 3 hospitals filed a usable price — fewer than 10, so no figureAKMaine: 2 hospitals filed a usable price — fewer than 10, so no figureMEVermont: 3 hospitals filed a usable price — fewer than 10, so no figureVTNew Hampshire: 5 hospitals filed a usable price — fewer than 10, so no figureNHWashington: 8 hospitals filed a usable price — fewer than 10, so no figureWAIdaho: 6 hospitals filed a usable price — fewer than 10, so no figureIDMontana: 4 hospitals filed a usable price — fewer than 10, so no figureMTNorth Dakota: 1 hospital filed a usable price — fewer than 10, so no figureNDMinnesota: 3 hospitals filed a usable price — fewer than 10, so no figureMNIllinois: median $255 across 25 hospitalsIL$255Wisconsin: median $479 across 32 hospitalsWI$479Michigan: median $444 across 20 hospitalsMI$444New York: median $153 across 29 hospitalsNY$153Massachusetts: median $509 across 11 hospitalsMA$509Oregon: median $152 across 15 hospitalsOR$152Nevada: 3 hospitals filed a usable price — fewer than 10, so no figureNVWyoming: 5 hospitals filed a usable price — fewer than 10, so no figureWYSouth Dakota: no hospital in the corpus filed a usable priceSDIowa: median $44 across 13 hospitalsIA$44Indiana: median $1,460 across 12 hospitalsIN$1,460Ohio: median $406 across 48 hospitalsOH$406Pennsylvania: median $244 across 16 hospitalsPA$244New Jersey: median $143 across 23 hospitalsNJ$143Connecticut: 7 hospitals filed a usable price — fewer than 10, so no figureCTRhode Island: 1 hospital filed a usable price — fewer than 10, so no figureRICalifornia: median $347 across 60 hospitalsCA$347Utah: no hospital in the corpus filed a usable priceUTColorado: median $121 across 11 hospitalsCO$121Nebraska: 9 hospitals filed a usable price — fewer than 10, so no figureNEMissouri: 9 hospitals filed a usable price — fewer than 10, so no figureMOKentucky: 3 hospitals filed a usable price — fewer than 10, so no figureKYWest Virginia: 3 hospitals filed a usable price — fewer than 10, so no figureWVVirginia: median $224 across 16 hospitalsVA$224Maryland: 6 hospitals filed a usable price — fewer than 10, so no figureMDDelaware: 2 hospitals filed a usable price — fewer than 10, so no figureDEArizona: median $455 across 14 hospitalsAZ$455New Mexico: 1 hospital filed a usable price — fewer than 10, so no figureNMKansas: 4 hospitals filed a usable price — fewer than 10, so no figureKSArkansas: 4 hospitals filed a usable price — fewer than 10, so no figureARTennessee: 8 hospitals filed a usable price — fewer than 10, so no figureTNNorth Carolina: median $136 across 18 hospitalsNC$136South Carolina: 6 hospitals filed a usable price — fewer than 10, so no figureSCOklahoma: median $36 across 12 hospitalsOK$36Louisiana: 9 hospitals filed a usable price — fewer than 10, so no figureLAMississippi: no hospital in the corpus filed a usable priceMSAlabama: 1 hospital filed a usable price — fewer than 10, so no figureALGeorgia: median $154 across 18 hospitalsGA$154Hawaii: 5 hospitals filed a usable price — fewer than 10, so no figureHITexas: median $403 across 65 hospitalsTX$403Florida: median $309 across 54 hospitalsFL$309
Cash price by state, most expensive first. National median $297. A state needs at least 10 hospitals with a usable price to show a figure.
StateHospitalsMedianvs national20th–80th
Indiana IN12$1,460+392%$1,285 – $1,973
Massachusetts MA11$509+72%$174 – $1,075
Wisconsin WI32$479+61%$367 – $696
Arizona AZ14$455+53%$90 – $455
Michigan MI20$444+50%$183 – $460
Ohio OH48$406+37%$385 – $422
Texas TX65$403+36%$355 – $467
California CA60$347+17%$306 – $804
Florida FL54$309+4%$193 – $358
Illinois IL25$255−14%$32 – $1,220
Pennsylvania PA16$244−18%$146 – $317
Virginia VA16$224−25%$224 – $348
Georgia GA18$154−48%$154 – $728
New York NY29$153−49%$153 – $244
Oregon OR15$152−49%$33 – $248
New Jersey NJ23$143−52%$74 – $172
North Carolina NC18$136−54%$136 – $338
Colorado CO11$121−59%$109 – $188
Iowa IA13$44−85%$44 – $161
Oklahoma OK12$36−88%$36 – $36
Louisiana LA9not enough hospitals filed a usable price
Missouri MO9not enough hospitals filed a usable price
Nebraska NE9not enough hospitals filed a usable price
Tennessee TN8not enough hospitals filed a usable price
Washington WA8not enough hospitals filed a usable price
Connecticut CT7not enough hospitals filed a usable price
Idaho ID6not enough hospitals filed a usable price
Maryland MD6not enough hospitals filed a usable price
South Carolina SC6not enough hospitals filed a usable price
Hawaii HI5not enough hospitals filed a usable price
New Hampshire NH5not enough hospitals filed a usable price
Wyoming WY5not enough hospitals filed a usable price
Arkansas AR4not enough hospitals filed a usable price
Kansas KS4not enough hospitals filed a usable price
Montana MT4not enough hospitals filed a usable price
Alaska AK3not enough hospitals filed a usable price
Kentucky KY3not enough hospitals filed a usable price
Minnesota MN3not enough hospitals filed a usable price
Nevada NV3not enough hospitals filed a usable price
Vermont VT3not enough hospitals filed a usable price
West Virginia WV3not enough hospitals filed a usable price
Delaware DE2not enough hospitals filed a usable price
Maine ME2not enough hospitals filed a usable price
Alabama AL1not enough hospitals filed a usable price
North Dakota ND1not enough hospitals filed a usable price
New Mexico NM1not enough hospitals filed a usable price
Rhode Island RI1not 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 $297.

Cash price by hospital segment. A segment needs at least 20 hospitals to show a figure.
SegmentHospitalsMedian20th–80th
Hospital type
Acute care548$260$136 – $458
Children’s19fewer than 20 hospitals
Critical access62$358$174 – $479
Ownership
For-profit59$384$123 – $550
Government58$154$87 – $367
Non-profit512$309$143 – $479
System affiliation
Part of a system574$309$146 – $467
Independent59$181$83 – $654

Cash price vs list price

Median list price (chargemaster)$528
Median cash price$297
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

476 hospitals filed a usable inpatient cash price for this code. The median is $347 and the average of the middle 60% is $334; most fall between $149 and $479.

Cash price percentiles, inpatient, across 476 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
$44$172$347$458$696

The most expensive tenth of hospitals charges at least 16× what the cheapest tenth charges ($44 vs $696).

Of the 501 hospitals that filed this code inpatient, 476 gave a usable cash price; 11 carried a plausibility flag, 0 filed a number their own filing marks as not a price, 0 gave an estimate, and 14 a list price only.

How complete is this

633 of the 3,956 hospitals with a price file in our corpus (16%) filed a usable outpatient cash price for this code, and those are the hospitals every figure on this page is computed from.

What the 666 hospitals that filed this code at all gave us
Usable cash price — counted633
Cash price carrying a plausibility flag — shown on the compare tool, excluded here20
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 — excluded13
Hospitals that filed this code666

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 diagnostic procedures on lung and bronchus family.

Hospitals file this code under descriptions such as High Altitude Simulatj W/Phys I&R W/O2 Titration|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, “High altitude simulation test with oxygen adjustment (CPT 94453) — cash price report,” computed September 25, 2026. https://hospitalrates.com/procedures/cpt-94453-high-altitude-simulation-test-with-oxygen-adjustment