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Procedure price report · Laboratory - Chemistry and Hematology

Oxygen uptake and exhaled gas test at rest and with exercise

CPT 94680the billing code this page is about

Measurement of how much oxygen the body uses by analyzing exhaled air, performed both at rest and during exercise using a direct method.

Hospitals typically charge $189 cash for this outpatient procedure — the median across 491 hospitals that filed a usable cash price; the average of the middle 60% is $215. Most fall between $76 and $436 (20th–80th percentile).

Hospitals
491
States
48
Filings dated
Jun 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 491 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
$29$102$189$356$599

The most expensive tenth of hospitals charges at least 21× what the cheapest tenth charges ($29 vs $599).

How the prices are spread

$21 – $31: 31 hospitals$21$31 – $46: 12 hospitals$46 – $67: 21 hospitals$46$67 – $99: 29 hospitals$99 – $145: 63 hospitals$99$145 – $213: 88 hospitals$213 – $313: 67 hospitals$213$313 – $459: 60 hospitals$459 – $675: 58 hospitals$459$675 – $991: 16 hospitals$675median $189price bands are equal on a log scale
Hospitals per price band (445 of 491 — the bands cover the 5th to 95th percentile)
FromToHospitals
$21$3131
$31$4612
$46$6721
$67$9929
$99$14563
$145$21388
$213$31367
$313$45960
$459$67558
$675$99116

Against Medicare

Medicare pays (OPPS 2026, national rate)$131
Median cash price$189
Cash as a multiple of Medicare1.44×

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 $189.

Alaska: 2 hospitals filed a usable price — fewer than 10, so no figureAKMaine: 1 hospital filed a usable price — fewer than 10, so no figureMEVermont: 2 hospitals filed a usable price — fewer than 10, so no figureVTNew Hampshire: 3 hospitals filed a usable price — fewer than 10, so no figureNHWashington: median $359 across 11 hospitalsWA$359Idaho: 6 hospitals filed a usable price — fewer than 10, so no figureIDMontana: 3 hospitals filed a usable price — fewer than 10, so no figureMTNorth Dakota: 1 hospital filed a usable price — fewer than 10, so no figureNDMinnesota: 2 hospitals filed a usable price — fewer than 10, so no figureMNIllinois: median $134 across 18 hospitalsIL$134Wisconsin: median $202 across 16 hospitalsWI$202Michigan: median $110 across 32 hospitalsMI$110New York: median $166 across 30 hospitalsNY$166Massachusetts: 2 hospitals filed a usable price — fewer than 10, so no figureMAOregon: 7 hospitals filed a usable price — fewer than 10, so no figureORNevada: 5 hospitals 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 $112 across 29 hospitalsIA$112Indiana: 8 hospitals filed a usable price — fewer than 10, so no figureINOhio: median $162 across 19 hospitalsOH$162Pennsylvania: median $263 across 30 hospitalsPA$263New Jersey: median $173 across 13 hospitalsNJ$173Connecticut: 6 hospitals filed a usable price — fewer than 10, so no figureCTRhode Island: no hospital in the corpus filed a usable priceRICalifornia: median $561 across 63 hospitalsCA$561Utah: 1 hospital filed a usable price — fewer than 10, so no figureUTColorado: 5 hospitals filed a usable price — fewer than 10, so no figureCONebraska: median $124 across 13 hospitalsNE$124Missouri: 4 hospitals filed a usable price — fewer than 10, so no figureMOKentucky: 8 hospitals filed a usable price — fewer than 10, so no figureKYWest Virginia: 3 hospitals filed a usable price — fewer than 10, so no figureWVVirginia: 4 hospitals filed a usable price — fewer than 10, so no figureVAMaryland: median $568 across 10 hospitalsMD$568Delaware: 2 hospitals filed a usable price — fewer than 10, so no figureDEArizona: 9 hospitals filed a usable price — fewer than 10, so no figureAZNew Mexico: 4 hospitals filed a usable price — fewer than 10, so no figureNMKansas: 4 hospitals filed a usable price — fewer than 10, so no figureKSArkansas: 2 hospitals filed a usable price — fewer than 10, so no figureARTennessee: median $117 across 13 hospitalsTN$117North Carolina: 7 hospitals filed a usable price — fewer than 10, so no figureNCSouth Carolina: 7 hospitals filed a usable price — fewer than 10, so no figureSCOklahoma: median $25 across 16 hospitalsOK$25Louisiana: 6 hospitals filed a usable price — fewer than 10, so no figureLAMississippi: 9 hospitals filed a usable price — fewer than 10, so no figureMSAlabama: 6 hospitals filed a usable price — fewer than 10, so no figureALGeorgia: 8 hospitals filed a usable price — fewer than 10, so no figureGAHawaii: 6 hospitals filed a usable price — fewer than 10, so no figureHITexas: median $519 across 18 hospitalsTX$519Florida: median $71 across 15 hospitalsFL$71
Cash price by state, most expensive first. National median $189. A state needs at least 10 hospitals with a usable price to show a figure.
StateHospitalsMedianvs national20th–80th
Maryland MD10$568+200%$270 – $865
California CA63$561+197%$266 – $599
Texas TX18$519+175%$90 – $991
Washington WA11$359+90%$326 – $502
Pennsylvania PA30$263+39%$183 – $661
Wisconsin WI16$202+7%$192 – $276
New Jersey NJ13$173−8%$171 – $184
New York NY30$166−12%$83 – $185
Ohio OH19$162−14%$92 – $372
Illinois IL18$134−29%$12 – $333
Nebraska NE13$124−34%$102 – $245
Tennessee TN13$117−38%$18 – $212
Iowa IA29$112−40%$29 – $312
Michigan MI32$110−42%$99 – $266
Florida FL15$71−63%$68 – $508
Oklahoma OK16$25−87%$20 – $25
Arizona AZ9not enough hospitals filed a usable price
Mississippi MS9not enough hospitals filed a usable price
Georgia GA8not enough hospitals filed a usable price
Indiana IN8not enough hospitals filed a usable price
Kentucky KY8not enough hospitals filed a usable price
North Carolina NC7not enough hospitals filed a usable price
Oregon OR7not enough hospitals filed a usable price
South Carolina SC7not enough hospitals filed a usable price
Alabama AL6not enough hospitals filed a usable price
Connecticut CT6not enough hospitals filed a usable price
Hawaii HI6not enough hospitals filed a usable price
Idaho ID6not enough hospitals filed a usable price
Louisiana LA6not enough hospitals filed a usable price
Colorado CO5not enough hospitals filed a usable price
Nevada NV5not enough hospitals filed a usable price
Kansas KS4not enough hospitals filed a usable price
Missouri MO4not enough hospitals filed a usable price
New Mexico NM4not enough hospitals filed a usable price
Virginia VA4not enough hospitals filed a usable price
Montana MT3not enough hospitals filed a usable price
New Hampshire NH3not enough hospitals filed a usable price
West Virginia WV3not enough hospitals filed a usable price
Alaska AK2not enough hospitals filed a usable price
Arkansas AR2not enough hospitals filed a usable price
Delaware DE2not enough hospitals filed a usable price
Massachusetts MA2not enough hospitals filed a usable price
Minnesota MN2not enough hospitals filed a usable price
Vermont VT2not enough hospitals filed a usable price
Wyoming WY2not enough hospitals filed a usable price
Maine ME1not enough hospitals filed a usable price
North Dakota ND1not 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 $189.

Cash price by hospital segment. A segment needs at least 20 hospitals to show a figure.
SegmentHospitalsMedian20th–80th
Hospital type
Acute care396$189$77 – $498
Children’s22$296$101 – $984
Critical access72$166$66 – $333
Ownership
For-profit44$177$51 – $519
Government79$185$68 – $405
Non-profit367$194$86 – $436
System affiliation
Part of a system410$192$71 – $474
Independent81$186$87 – $371

Cash price vs list price

Median list price (chargemaster)$406
Median cash price$189
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

345 hospitals filed a usable inpatient cash price for this code. The median is $219 and the average of the middle 60% is $238; most fall between $59 and $532.

Cash price percentiles, inpatient, across 345 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
$29$92$219$425$669

The most expensive tenth of hospitals charges at least 23× what the cheapest tenth charges ($29 vs $669).

Of the 367 hospitals that filed this code inpatient, 345 gave a usable cash price; 9 carried a plausibility flag, 1 filed a number their own filing marks as not a price, 0 gave an estimate, and 12 a list price only.

How complete is this

491 of the 3,956 hospitals with a price file in our corpus (12%) filed a usable outpatient cash price for this code, and those are the hospitals every figure on this page is computed from.

What the 538 hospitals that filed this code at all gave us
Usable cash price — counted491
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 — excluded19
Hospitals that filed this code538

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 Laboratory - Chemistry and Hematology family.

Hospitals file this code under descriptions such as O2 Uptk Exp Gas Analysis Rest&Xers Direct Simp|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, “Oxygen uptake and exhaled gas test at rest and with exercise (CPT 94680) — cash price report,” computed September 25, 2026. https://hospitalrates.com/procedures/cpt-94680-oxygen-uptake-and-exhaled-gas-test-at-rest-and-with-exercise