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Procedure price report · Other therapeutic procedures

Doctor supervision of hyperbaric oxygen therapy, per session

CPT 99183the billing code this page is about

A physician's attendance and oversight while a patient breathes pressurized oxygen in a hyperbaric chamber; billed once for each treatment session.

Hospitals typically charge $445 cash for this outpatient procedure — the median across 617 hospitals that filed a usable cash price; the average of the middle 60% is $540. Most fall between $189 and $1,575 (20th–80th percentile).

Hospitals
617
States
48
Filings dated
Feb 2024 – Sep 2026
Computed
September 25, 2026
Prices checked
through September 24, 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 617 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
$133$210$445$1,108$2,301

The most expensive tenth of hospitals charges at least 17× what the cheapest tenth charges ($133 vs $2,301).

How the prices are spread

$101 – $142: 51 hospitals$101$142 – $201: 64 hospitals$201 – $284: 80 hospitals$201$284 – $401: 69 hospitals$401 – $567: 71 hospitals$401$567 – $801: 56 hospitals$801 – $1,131: 44 hospitals$801$1,131 – $1,598: 29 hospitals$1,598 – $2,257: 61 hospitals$1,598$2,257 – $3,188: 36 hospitals$2,257median $445price bands are equal on a log scale
Hospitals per price band (561 of 617 — the bands cover the 5th to 95th percentile)
FromToHospitals
$101$14251
$142$20164
$201$28480
$284$40169
$401$56771
$567$80156
$801$1,13144
$1,131$1,59829
$1,598$2,25761
$2,257$3,18836

By state

The median cash price in each state, against the national median of $445.

Alaska: no hospital in the corpus filed a usable priceAKMaine: 3 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: 4 hospitals filed a usable price — fewer than 10, so no figureWAIdaho: 3 hospitals filed a usable price — fewer than 10, so no figureIDMontana: 3 hospitals filed a usable price — fewer than 10, so no figureMTNorth Dakota: 2 hospitals filed a usable price — fewer than 10, so no figureNDMinnesota: median $617 across 17 hospitalsMN$617Illinois: median $527 across 38 hospitalsIL$527Wisconsin: median $564 across 26 hospitalsWI$564Michigan: median $158 across 34 hospitalsMI$158New York: median $300 across 17 hospitalsNY$300Massachusetts: 6 hospitals filed a usable price — fewer than 10, so no figureMAOregon: median $303 across 18 hospitalsOR$303Nevada: 1 hospital filed a usable price — fewer than 10, so no figureNVWyoming: 4 hospitals filed a usable price — fewer than 10, so no figureWYSouth Dakota: 7 hospitals filed a usable price — fewer than 10, so no figureSDIowa: median $424 across 23 hospitalsIA$424Indiana: median $376 across 16 hospitalsIN$376Ohio: median $549 across 36 hospitalsOH$549Pennsylvania: median $296 across 14 hospitalsPA$296New Jersey: 6 hospitals filed a usable price — fewer than 10, so no figureNJConnecticut: 8 hospitals filed a usable price — fewer than 10, so no figureCTRhode Island: 2 hospitals filed a usable price — fewer than 10, so no figureRICalifornia: median $655 across 30 hospitalsCA$655Utah: 5 hospitals filed a usable price — fewer than 10, so no figureUTColorado: median $1,698 across 13 hospitalsCO$1,698Nebraska: 6 hospitals filed a usable price — fewer than 10, so no figureNEMissouri: median $447 across 15 hospitalsMO$447Kentucky: median $985 across 28 hospitalsKY$985West Virginia: median $125 across 11 hospitalsWV$125Virginia: 9 hospitals filed a usable price — fewer than 10, so no figureVAMaryland: 7 hospitals filed a usable price — fewer than 10, so no figureMDDelaware: 3 hospitals filed a usable price — fewer than 10, so no figureDEArizona: 6 hospitals filed a usable price — fewer than 10, so no figureAZNew Mexico: 2 hospitals filed a usable price — fewer than 10, so no figureNMKansas: 8 hospitals filed a usable price — fewer than 10, so no figureKSArkansas: 7 hospitals filed a usable price — fewer than 10, so no figureARTennessee: median $713 across 12 hospitalsTN$713North Carolina: median $381 across 23 hospitalsNC$381South Carolina: 4 hospitals filed a usable price — fewer than 10, so no figureSCOklahoma: median $172 across 14 hospitalsOK$172Louisiana: median $251 across 20 hospitalsLA$251Mississippi: median $659 across 15 hospitalsMS$659Alabama: 9 hospitals filed a usable price — fewer than 10, so no figureALGeorgia: median $962 across 19 hospitalsGA$962Hawaii: no hospital in the corpus filed a usable priceHITexas: median $548 across 19 hospitalsTX$548Florida: median $1,818 across 36 hospitalsFL$1,818
Cash price by state, most expensive first. National median $445. A state needs at least 10 hospitals with a usable price to show a figure.
StateHospitalsMedianvs national20th–80th
Florida FL36$1,818+309%$781 – $2,503
Colorado CO13$1,698+282%$1,179 – $1,698
Kentucky KY28$985+121%$206 – $3,188
Georgia GA19$962+116%$365 – $4,758
Tennessee TN12$713+60%$126 – $713
Mississippi MS15$659+48%$204 – $659
California CA30$655+47%$120 – $2,095
Minnesota MN17$617+39%$317 – $617
Wisconsin WI26$564+27%$564 – $1,462
Ohio OH36$549+23%$341 – $4,049
Texas TX19$548+23%$221 – $1,046
Illinois IL38$527+18%$191 – $1,733
Missouri MO15$4470%$141 – $602
Iowa IA23$424−5%$243 – $1,733
North Carolina NC23$381−14%$228 – $825
Indiana IN16$376−16%$228 – $1,374
Oregon OR18$303−32%$192 – $443
New York NY17$300−33%$162 – $371
Pennsylvania PA14$296−33%$188 – $1,849
Louisiana LA20$251−44%$96 – $975
Oklahoma OK14$172−61%$172 – $172
Michigan MI34$158−65%$142 – $564
West Virginia WV11$125−72%$112 – $134
Alabama AL9not enough hospitals filed a usable price
Virginia VA9not enough hospitals filed a usable price
Connecticut CT8not enough hospitals filed a usable price
Kansas KS8not enough hospitals filed a usable price
Arkansas AR7not enough hospitals filed a usable price
Maryland MD7not enough hospitals filed a usable price
South Dakota SD7not enough hospitals filed a usable price
Arizona AZ6not enough hospitals filed a usable price
Massachusetts MA6not enough hospitals filed a usable price
Nebraska NE6not enough hospitals filed a usable price
New Jersey NJ6not enough hospitals filed a usable price
New Hampshire NH5not enough hospitals filed a usable price
Utah UT5not enough hospitals filed a usable price
South Carolina SC4not enough hospitals filed a usable price
Washington WA4not enough hospitals filed a usable price
Wyoming WY4not enough hospitals filed a usable price
Delaware DE3not enough hospitals filed a usable price
Idaho ID3not enough hospitals filed a usable price
Maine ME3not enough hospitals filed a usable price
Montana MT3not enough hospitals filed a usable price
Vermont VT3not enough hospitals filed a usable price
North Dakota ND2not enough hospitals filed a usable price
New Mexico NM2not enough hospitals filed a usable price
Rhode Island RI2not enough hospitals filed a usable price
Nevada NV1not 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 $445.

Cash price by hospital segment. A segment needs at least 20 hospitals to show a figure.
SegmentHospitalsMedian20th–80th
Hospital type
Acute care493$470$191 – $1,698
Children’s6fewer than 20 hospitals
Critical access115$412$168 – $663
Ownership
For-profit57$733$221 – $2,090
Government100$447$182 – $985
Non-profit457$443$179 – $1,572
System affiliation
Part of a system492$526$192 – $1,698
Independent125$313$159 – $748

Cash price vs list price

Median list price (chargemaster)$606
Median cash price$445
Cash as a share of list, median hospital65%

At the typical hospital, asking for the cash price cuts the list price by about 35%. 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

442 hospitals filed a usable inpatient cash price for this code. The median is $548 and the average of the middle 60% is $677; most fall between $206 and $1,733.

Cash price percentiles, inpatient, across 442 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
$159$236$548$1,575$2,503

The most expensive tenth of hospitals charges at least 16× what the cheapest tenth charges ($159 vs $2,503).

Of the 492 hospitals that filed this code inpatient, 442 gave a usable cash price; 24 carried a plausibility flag, 0 filed a number their own filing marks as not a price, 0 gave an estimate, and 26 a list price only.

How complete is this

617 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 703 hospitals that filed this code at all gave us
Usable cash price — counted617
Cash price carrying a plausibility flag — shown on the compare tool, excluded here36
A number the filing itself marks as not a price (a placeholder, a ratio) — excluded0
An estimate rather than a filed cash price — excluded1
A list price only, no cash figure — excluded49
Hospitals that filed this code703

Sections not shown for this setting

  • Against Medicare: Medicare has no separately payable national outpatient (OPPS) rate for this code, so there is nothing honest to compare against.
  • 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 24, 2026; the figures were computed September 25, 2026 from filings loaded through September 24, 2026. The percentiles and averages use only the “counted” row.

Related procedures

Part of the Other therapeutic procedures family.

Hospitals file this code under descriptions such as Phys/Qhp Attn&Supvj Hyprbaric Oxygen Tx/Session.

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, “Doctor supervision of hyperbaric oxygen therapy, per session (CPT 99183) — cash price report,” computed September 25, 2026. https://hospitalrates.com/procedures/cpt-99183-doctor-supervision-of-hyperbaric-oxygen-therapy-per-session