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Procedure price report · Other diagnostic procedures on lung and bronchus

High altitude simulation breathing test

CPT 94452the billing code this page is about

You breathe a low-oxygen gas mixture that mimics cabin air at altitude while oxygen levels are monitored, with a written interpretation by the clinician.

Hospitals typically charge $258 cash for this outpatient procedure — the median across 582 hospitals that filed a usable cash price; the average of the middle 60% is $273. Most fall between $120 and $490 (20th–80th percentile).

Hospitals
582
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 582 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
$42$141$258$433$788

The most expensive tenth of hospitals charges at least 19× what the cheapest tenth charges ($42 vs $788).

How the prices are spread

$28 – $40: 29 hospitals$28$40 – $59: 20 hospitals$59 – $85: 14 hospitals$59$85 – $122: 32 hospitals$122 – $177: 92 hospitals$122$177 – $256: 77 hospitals$256 – $370: 96 hospitals$256$370 – $536: 92 hospitals$536 – $774: 44 hospitals$536$774 – $1,120: 38 hospitals$774median $258price bands are equal on a log scale
Hospitals per price band (534 of 582 — the bands cover the 5th to 95th percentile)
FromToHospitals
$28$4029
$40$5920
$59$8514
$85$12232
$122$17792
$177$25677
$256$37096
$370$53692
$536$77444
$774$1,12038

Against Medicare

Medicare pays (OPPS 2026, national rate)$136
Median cash price$258
Cash as a multiple of Medicare1.90×

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 $258.

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: 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: 5 hospitals filed a usable price — fewer than 10, so no figureMNIllinois: median $100 across 16 hospitalsIL$100Wisconsin: median $406 across 24 hospitalsWI$406Michigan: median $183 across 13 hospitalsMI$183New York: median $153 across 28 hospitalsNY$153Massachusetts: 9 hospitals filed a usable price — fewer than 10, so no figureMAOregon: median $168 across 15 hospitalsOR$168Nevada: 3 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 $34 across 15 hospitalsIA$34Indiana: median $1,054 across 12 hospitalsIN$1,054Ohio: median $385 across 50 hospitalsOH$385Pennsylvania: median $229 across 15 hospitalsPA$229New Jersey: median $143 across 23 hospitalsNJ$143Connecticut: 1 hospital filed a usable price — fewer than 10, so no figureCTRhode Island: 1 hospital filed a usable price — fewer than 10, so no figureRICalifornia: median $781 across 61 hospitalsCA$781Utah: no hospital in the corpus filed a usable priceUTColorado: median $131 across 12 hospitalsCO$131Nebraska: 9 hospitals filed a usable price — fewer than 10, so no figureNEMissouri: median $224 across 15 hospitalsMO$224Kentucky: 2 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 $213 across 20 hospitalsVA$213Maryland: 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: 2 hospitals filed a usable price — fewer than 10, so no figureNMKansas: 5 hospitals filed a usable price — fewer than 10, so no figureKSArkansas: 3 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 $135 across 15 hospitalsNC$135South Carolina: 6 hospitals filed a usable price — fewer than 10, so no figureSCOklahoma: median $28 across 12 hospitalsOK$28Louisiana: median $105 across 10 hospitalsLA$105Mississippi: no hospital in the corpus filed a usable priceMSAlabama: 1 hospital filed a usable price — fewer than 10, so no figureALGeorgia: median $336 across 15 hospitalsGA$336Hawaii: 5 hospitals filed a usable price — fewer than 10, so no figureHITexas: median $570 across 47 hospitalsTX$570Florida: median $237 across 45 hospitalsFL$237
Cash price by state, most expensive first. National median $258. A state needs at least 10 hospitals with a usable price to show a figure.
StateHospitalsMedianvs national20th–80th
Indiana IN12$1,054+308%$927 – $1,424
California CA61$781+202%$306 – $1,120
Texas TX47$570+120%$335 – $595
Arizona AZ14$455+76%$56 – $455
Wisconsin WI24$406+57%$228 – $406
Ohio OH50$385+49%$325 – $406
Georgia GA15$336+30%$221 – $728
Florida FL45$237−8%$176 – $350
Pennsylvania PA15$229−12%$125 – $330
Missouri MO15$224−13%$131 – $302
Virginia VA20$213−18%$50 – $299
Michigan MI13$183−29%$108 – $406
Oregon OR15$168−35%$25 – $168
New York NY28$153−41%$127 – $207
New Jersey NJ23$143−45%$88 – $172
North Carolina NC15$135−48%$135 – $189
Colorado CO12$131−49%$111 – $513
Louisiana LA10$105−59%$56 – $204
Illinois IL16$100−61%$14 – $206
Iowa IA15$34−87%$34 – $293
Oklahoma OK12$28−89%$28 – $28
Massachusetts MA9not 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
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
Kansas KS5not enough hospitals filed a usable price
Minnesota MN5not enough hospitals filed a usable price
New Hampshire NH5not enough hospitals filed a usable price
Montana MT4not enough hospitals filed a usable price
Arkansas AR3not 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
Wyoming WY3not enough hospitals filed a usable price
Alaska AK2not enough hospitals filed a usable price
Delaware DE2not enough hospitals filed a usable price
Kentucky KY2not enough hospitals filed a usable price
Maine ME2not enough hospitals filed a usable price
New Mexico NM2not enough hospitals filed a usable price
Alabama AL1not enough hospitals filed a usable price
Connecticut CT1not enough hospitals filed a usable price
North Dakota ND1not 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 $258.

Cash price by hospital segment. A segment needs at least 20 hospitals to show a figure.
SegmentHospitalsMedian20th–80th
Hospital type
Acute care508$251$111 – $482
Children’s20$482$182 – $698
Critical access50$325$165 – $407
Ownership
For-profit56$336$129 – $570
Government55$153$93 – $314
Non-profit467$275$129 – $532
System affiliation
Part of a system525$293$131 – $503
Independent57$161$70 – $450

Cash price vs list price

Median list price (chargemaster)$457
Median cash price$258
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

423 hospitals filed a usable inpatient cash price for this code. The median is $330 and the average of the middle 60% is $330; most fall between $131 and $570.

Cash price percentiles, inpatient, across 423 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
$40$161$330$455$804

The most expensive tenth of hospitals charges at least 20× what the cheapest tenth charges ($40 vs $804).

Of the 461 hospitals that filed this code inpatient, 423 gave a usable cash price; 22 carried a plausibility flag, 0 filed a number their own filing marks as not a price, 0 gave an estimate, and 16 a list price only.

How complete is this

582 of the 3,956 hospitals with a price file in our corpus (15%) filed a usable outpatient cash price for this code, and those are the hospitals every figure on this page is computed from.

What the 615 hospitals that filed this code at all gave us
Usable cash price — counted582
Cash price carrying a plausibility flag — shown on the compare tool, excluded here18
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 — excluded15
Hospitals that filed this code615

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 Test W/Phys Interp&Report|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 breathing test (CPT 94452) — cash price report,” computed September 25, 2026. https://hospitalrates.com/procedures/cpt-94452-high-altitude-simulation-breathing-test