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Procedure price report · Other diagnostic procedures on lung and bronchus

Airway resistance test using sound waves

CPT 94728the billing code this page is about

Breathing test that measures resistance in the airways by sending gentle pressure or sound pulses into the mouth while the patient breathes normally; billed once per test session.

Hospitals typically charge $265 cash for this outpatient procedure — the median across 1,032 hospitals that filed a usable cash price; the average of the middle 60% is $279. Most fall between $113 and $476 (20th–80th percentile).

Hospitals
1,032
States
49
Filings dated
Jan 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 1,032 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
$51$132$265$436$585

The most expensive tenth of hospitals charges at least 11× what the cheapest tenth charges ($51 vs $585).

How the prices are spread

$29 – $41: 22 hospitals$29$41 – $57: 40 hospitals$57 – $81: 40 hospitals$57$81 – $114: 73 hospitals$114 – $162: 83 hospitals$114$162 – $228: 157 hospitals$228 – $322: 142 hospitals$228$322 – $455: 190 hospitals$455 – $643: 143 hospitals$455$643 – $907: 41 hospitals$643median $265price bands are equal on a log scale
Hospitals per price band (931 of 1,032 — the bands cover the 5th to 95th percentile)
FromToHospitals
$29$4122
$41$5740
$57$8140
$81$11473
$114$16283
$162$228157
$228$322142
$322$455190
$455$643143
$643$90741

Against Medicare

Medicare pays (OPPS 2026, national rate)$131
Median cash price$265
Cash as a multiple of Medicare2.0×

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 $265.

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: median $312 across 17 hospitalsWA$312Idaho: 8 hospitals filed a usable price — fewer than 10, so no figureIDMontana: 1 hospital filed a usable price — fewer than 10, so no figureMTNorth Dakota: 6 hospitals filed a usable price — fewer than 10, so no figureNDMinnesota: median $184 across 36 hospitalsMN$184Illinois: median $230 across 39 hospitalsIL$230Wisconsin: median $240 across 45 hospitalsWI$240Michigan: median $127 across 23 hospitalsMI$127New York: median $185 across 43 hospitalsNY$185Massachusetts: 9 hospitals filed a usable price — fewer than 10, so no figureMAOregon: 9 hospitals filed a usable price — fewer than 10, so no figureORNevada: 8 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 $154 across 21 hospitalsIA$154Indiana: median $207 across 26 hospitalsIN$207Ohio: median $358 across 61 hospitalsOH$358Pennsylvania: median $337 across 25 hospitalsPA$337New Jersey: median $184 across 28 hospitalsNJ$184Connecticut: 7 hospitals filed a usable price — fewer than 10, so no figureCTRhode Island: 4 hospitals filed a usable price — fewer than 10, so no figureRICalifornia: median $420 across 93 hospitalsCA$420Utah: median $457 across 25 hospitalsUT$457Colorado: median $361 across 19 hospitalsCO$361Nebraska: median $63 across 14 hospitalsNE$63Missouri: median $354 across 17 hospitalsMO$354Kentucky: median $225 across 25 hospitalsKY$225West Virginia: 9 hospitals filed a usable price — fewer than 10, so no figureWVVirginia: median $271 across 21 hospitalsVA$271Maryland: 9 hospitals filed a usable price — fewer than 10, so no figureMDDelaware: 1 hospital filed a usable price — fewer than 10, so no figureDEArizona: median $164 across 21 hospitalsAZ$164New Mexico: 7 hospitals filed a usable price — fewer than 10, so no figureNMKansas: median $269 across 20 hospitalsKS$269Arkansas: 9 hospitals filed a usable price — fewer than 10, so no figureARTennessee: median $43 across 22 hospitalsTN$43North Carolina: median $135 across 25 hospitalsNC$135South Carolina: median $300 across 18 hospitalsSC$300Oklahoma: median $145 across 24 hospitalsOK$145Louisiana: median $170 across 16 hospitalsLA$170Mississippi: median $102 across 18 hospitalsMS$102Alabama: 8 hospitals filed a usable price — fewer than 10, so no figureALGeorgia: median $228 across 51 hospitalsGA$228Hawaii: 6 hospitals filed a usable price — fewer than 10, so no figureHITexas: median $420 across 66 hospitalsTX$420Florida: median $333 across 56 hospitalsFL$333
Cash price by state, most expensive first. National median $265. A state needs at least 10 hospitals with a usable price to show a figure.
StateHospitalsMedianvs national20th–80th
Utah UT25$457+73%$406 – $508
California CA93$420+59%$262 – $487
Texas TX66$420+59%$193 – $504
Colorado CO19$361+36%$162 – $1,053
Ohio OH61$358+35%$114 – $468
Missouri MO17$354+34%$67 – $364
Pennsylvania PA25$337+27%$131 – $759
Florida FL56$333+26%$281 – $582
Washington WA17$312+18%$289 – $392
South Carolina SC18$300+14%$120 – $383
Virginia VA21$271+2%$173 – $379
Kansas KS20$269+2%$54 – $375
Wisconsin WI45$240−9%$215 – $378
Illinois IL39$230−13%$29 – $365
Georgia GA51$228−14%$113 – $484
Kentucky KY25$225−15%$84 – $491
Indiana IN26$207−22%$36 – $308
New York NY43$185−30%$81 – $674
New Jersey NJ28$184−30%$171 – $209
Minnesota MN36$184−31%$170 – $227
Louisiana LA16$170−36%$111 – $209
Arizona AZ21$164−38%$71 – $718
Iowa IA21$154−42%$29 – $341
Oklahoma OK24$145−45%$25 – $319
North Carolina NC25$135−49%$68 – $217
Michigan MI23$127−52%$45 – $344
Mississippi MS18$102−61%$71 – $159
Nebraska NE14$63−76%$53 – $235
Tennessee TN22$43−84%$29 – $159
Arkansas AR9not enough hospitals filed a usable price
Massachusetts MA9not enough hospitals filed a usable price
Maryland MD9not enough hospitals filed a usable price
Oregon OR9not enough hospitals filed a usable price
West Virginia WV9not enough hospitals filed a usable price
Alabama AL8not enough hospitals filed a usable price
Idaho ID8not enough hospitals filed a usable price
Nevada NV8not enough hospitals filed a usable price
Connecticut CT7not enough hospitals filed a usable price
New Hampshire NH7not enough hospitals filed a usable price
New Mexico NM7not enough hospitals filed a usable price
Hawaii HI6not enough hospitals filed a usable price
North Dakota ND6not enough hospitals filed a usable price
Rhode Island RI4not enough hospitals filed a usable price
Wyoming WY3not enough hospitals filed a usable price
Alaska AK2not enough hospitals filed a usable price
Maine ME2not enough hospitals filed a usable price
Vermont VT2not enough hospitals filed a usable price
Delaware DE1not enough hospitals filed a usable price
Montana MT1not 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 $265.

Cash price by hospital segment. A segment needs at least 20 hospitals to show a figure.
SegmentHospitalsMedian20th–80th
Hospital type
Acute care821$259$113 – $476
Children’s45$306$185 – $436
Critical access165$243$105 – $406
Ownership
For-profit146$371$128 – $759
Government140$205$87 – $370
Non-profit745$269$113 – $468
System affiliation
Part of a system902$271$113 – $476
Independent130$224$82 – $400

Cash price vs list price

Median list price (chargemaster)$491
Median cash price$265
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

747 hospitals filed a usable inpatient cash price for this code. The median is $278 and the average of the middle 60% is $289; most fall between $94 and $476.

Cash price percentiles, inpatient, across 747 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
$43$114$278$436$582

The most expensive tenth of hospitals charges at least 14× what the cheapest tenth charges ($43 vs $582).

Of the 797 hospitals that filed this code inpatient, 747 gave a usable cash price; 16 carried a plausibility flag, 1 filed a number their own filing marks as not a price, 0 gave an estimate, and 33 a list price only.

How complete is this

1,032 of the 3,956 hospitals with a price file in our corpus (26%) filed a usable outpatient cash price for this code, and those are the hospitals every figure on this page is computed from.

What the 1,115 hospitals that filed this code at all gave us
Usable cash price — counted1,032
Cash price carrying a plausibility flag — shown on the compare tool, excluded here39
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 — excluded44
Hospitals that filed this code1,115

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 Airway Resistance by Oscillometry|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, “Airway resistance test using sound waves (CPT 94728) — cash price report,” computed September 25, 2026. https://hospitalrates.com/procedures/cpt-94728-airway-resistance-test-using-sound-waves