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Procedure price report · Other OR therapeutic procedures on nose, mouth and pharynx

Balloon dilation of frontal and sphenoid sinus openings

CPT 31298the billing code this page is about

Sinus surgery through the nostrils with a scope in which the drainage openings of both the frontal and sphenoid sinuses are widened, typically with a balloon.

Hospitals typically charge $6,984 cash for this outpatient procedure — the median across 347 hospitals that filed a usable cash price; the average of the middle 60% is $6,588. Most fall between $3,099 and $11,297 (20th–80th percentile).

Hospitals
347
States
42
Filings dated
Mar 2023 – Sep 2026
Computed
September 25, 2026
Prices checked
through September 23, 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 347 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
$734$3,430$6,984$9,704$14,907

The most expensive tenth of hospitals charges at least 20× what the cheapest tenth charges ($734 vs $14,907).

How the prices are spread

$414 – $613: 13 hospitals$414$613 – $907: 6 hospitals$907 – $1,341: 11 hospitals$907$1,341 – $1,984: 2 hospitals$1,984 – $2,934: 15 hospitals$1,984$2,934 – $4,339: 55 hospitals$4,339 – $6,418: 45 hospitals$4,339$6,418 – $9,493: 92 hospitals$9,493 – $14,041: 37 hospitals$9,493$14,041 – $20,767: 37 hospitals$14,041median $6,984price bands are equal on a log scale
Hospitals per price band (313 of 347 — the bands cover the 5th to 95th percentile)
FromToHospitals
$414$61313
$613$9076
$907$1,34111
$1,341$1,9842
$1,984$2,93415
$2,934$4,33955
$4,339$6,41845
$6,418$9,49392
$9,493$14,04137
$14,041$20,76737

Against Medicare

Medicare pays (OPPS 2026, national rate)$7,210
Median cash price$6,984
Cash as a multiple of Medicare0.97×

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 $6,984.

Alaska: 1 hospital filed a usable price — fewer than 10, so no figureAKMaine: no hospital in the corpus filed a usable priceMEVermont: 3 hospitals filed a usable price — fewer than 10, so no figureVTNew Hampshire: 2 hospitals filed a usable price — fewer than 10, so no figureNHWashington: 4 hospitals filed a usable price — fewer than 10, so no figureWAIdaho: 8 hospitals filed a usable price — fewer than 10, so no figureIDMontana: no hospital in the corpus filed a usable priceMTNorth Dakota: 2 hospitals filed a usable price — fewer than 10, so no figureNDMinnesota: median $11,297 across 10 hospitalsMN$11,297Illinois: median $6,375 across 17 hospitalsIL$6,375Wisconsin: median $11,404 across 24 hospitalsWI$11,404Michigan: median $383 across 27 hospitalsMI$383New York: median $8,192 across 32 hospitalsNY$8,192Massachusetts: no hospital in the corpus filed a usable priceMAOregon: 1 hospital filed a usable price — fewer than 10, so no figureORNevada: 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: 1 hospital filed a usable price — fewer than 10, so no figureSDIowa: median $8,716 across 14 hospitalsIA$8,716Indiana: median $3,269 across 20 hospitalsIN$3,269Ohio: median $7,308 across 11 hospitalsOH$7,308Pennsylvania: median $10,750 across 10 hospitalsPA$10,750New Jersey: median $7,565 across 25 hospitalsNJ$7,565Connecticut: 1 hospital filed a usable price — fewer than 10, so no figureCTRhode Island: no hospital in the corpus filed a usable priceRICalifornia: median $7,958 across 42 hospitalsCA$7,958Utah: no hospital in the corpus filed a usable priceUTColorado: 2 hospitals filed a usable price — fewer than 10, so no figureCONebraska: 3 hospitals filed a usable price — fewer than 10, so no figureNEMissouri: 7 hospitals filed a usable price — fewer than 10, so no figureMOKentucky: 4 hospitals filed a usable price — fewer than 10, so no figureKYWest Virginia: no hospital in the corpus filed a usable priceWVVirginia: 4 hospitals filed a usable price — fewer than 10, so no figureVAMaryland: no hospital in the corpus filed a usable priceMDDelaware: no hospital in the corpus filed a usable priceDEArizona: 1 hospital filed a usable price — fewer than 10, so no figureAZNew Mexico: 1 hospital filed a usable price — fewer than 10, so no figureNMKansas: 1 hospital filed a usable price — fewer than 10, so no figureKSArkansas: 1 hospital filed a usable price — fewer than 10, so no figureARTennessee: 7 hospitals filed a usable price — fewer than 10, so no figureTNNorth Carolina: 3 hospitals filed a usable price — fewer than 10, so no figureNCSouth Carolina: 6 hospitals filed a usable price — fewer than 10, so no figureSCOklahoma: median $5,393 across 13 hospitalsOK$5,393Louisiana: 8 hospitals filed a usable price — fewer than 10, so no figureLAMississippi: 2 hospitals filed a usable price — fewer than 10, so no figureMSAlabama: 5 hospitals filed a usable price — fewer than 10, so no figureALGeorgia: 2 hospitals filed a usable price — fewer than 10, so no figureGAHawaii: 5 hospitals filed a usable price — fewer than 10, so no figureHITexas: median $6,686 across 10 hospitalsTX$6,686Florida: 2 hospitals filed a usable price — fewer than 10, so no figureFL
Cash price by state, most expensive first. National median $6,984. A state needs at least 10 hospitals with a usable price to show a figure.
StateHospitalsMedianvs national20th–80th
Wisconsin WI24$11,404+63%$7,711 – $14,090
Minnesota MN10$11,297+62%$8,601 – $11,297
Pennsylvania PA10$10,750+54%$4,323 – $13,044
Iowa IA14$8,716+25%$8,716 – $8,716
New York NY32$8,192+17%$4,600 – $8,810
California CA42$7,958+14%$3,099 – $7,958
New Jersey NJ25$7,565+8%$4,881 – $8,152
Ohio OH11$7,308+5%$1,170 – $20,698
Texas TX10$6,686−4%$2,653 – $15,528
Illinois IL17$6,375−9%$3,430 – $20,767
Oklahoma OK13$5,393−23%$5,393 – $9,398
Indiana IN20$3,269−53%$2,169 – $3,501
Michigan MI27$383−95%$298 – $14,090
Idaho ID8not enough hospitals filed a usable price
Louisiana LA8not enough hospitals filed a usable price
Missouri MO7not enough hospitals filed a usable price
Tennessee TN7not enough hospitals filed a usable price
South Carolina SC6not enough hospitals filed a usable price
Alabama AL5not enough hospitals filed a usable price
Hawaii HI5not enough hospitals filed a usable price
Kentucky KY4not enough hospitals filed a usable price
Virginia VA4not enough hospitals filed a usable price
Washington WA4not enough hospitals filed a usable price
Wyoming WY4not enough hospitals filed a usable price
North Carolina NC3not enough hospitals filed a usable price
Nebraska NE3not enough hospitals filed a usable price
Vermont VT3not enough hospitals filed a usable price
Colorado CO2not enough hospitals filed a usable price
Florida FL2not enough hospitals filed a usable price
Georgia GA2not enough hospitals filed a usable price
Mississippi MS2not enough hospitals filed a usable price
North Dakota ND2not enough hospitals filed a usable price
New Hampshire NH2not enough hospitals filed a usable price
Alaska AK1not enough hospitals filed a usable price
Arkansas AR1not enough hospitals filed a usable price
Arizona AZ1not enough hospitals filed a usable price
Connecticut CT1not enough hospitals filed a usable price
Kansas KS1not enough hospitals filed a usable price
New Mexico NM1not enough hospitals filed a usable price
Nevada NV1not enough hospitals filed a usable price
Oregon OR1not enough hospitals filed a usable price
South Dakota SD1not 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 $6,984.

Cash price by hospital segment. A segment needs at least 20 hospitals to show a figure.
SegmentHospitalsMedian20th–80th
Hospital type
Acute care279$6,686$3,099 – $9,751
Children’s6fewer than 20 hospitals
Critical access62$7,711$3,331 – $14,090
Ownership
For-profit38$5,393$3,224 – $17,730
Government43$6,622$3,100 – $8,736
Non-profit266$7,308$3,099 – $11,297
System affiliation
Part of a system294$7,565$3,224 – $11,297
Independent53$4,265$614 – $12,045

Cash price vs list price

Median list price (chargemaster)$8,736
Median cash price$6,984
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

190 hospitals filed a usable inpatient cash price for this code. The median is $6,638 and the average of the middle 60% is $6,420; most fall between $3,099 and $12,182.

Cash price percentiles, inpatient, across 190 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
$644$3,430$6,638$9,751$14,090

The most expensive tenth of hospitals charges at least 22× what the cheapest tenth charges ($644 vs $14,090).

Of the 215 hospitals that filed this code inpatient, 190 gave a usable cash price; 18 carried a plausibility flag, 2 filed a number their own filing marks as not a price, 0 gave an estimate, and 5 a list price only.

How complete is this

347 of the 3,956 hospitals with a price file in our corpus (9%) filed a usable outpatient cash price for this code, and those are the hospitals every figure on this page is computed from.

What the 395 hospitals that filed this code at all gave us
Usable cash price — counted347
Cash price carrying a plausibility flag — shown on the compare tool, excluded here41
A number the filing itself marks as not a price (a placeholder, a ratio) — excluded2
An estimate rather than a filed cash price — excluded1
A list price only, no cash figure — excluded4
Hospitals that filed this code395

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 5, 2026 and September 23, 2026; the figures were computed September 25, 2026 from filings loaded through September 23, 2026. The percentiles and averages use only the “counted” row.

Related procedures

Part of the Other OR therapeutic procedures on nose, mouth and pharynx family.

Hospitals file this code under descriptions such as Nasal/Sinus Ndsc Surg W/Dilation Frnt&Sphn Sinus.

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, “Balloon dilation of frontal and sphenoid sinus openings (CPT 31298) — cash price report,” computed September 25, 2026. https://hospitalrates.com/procedures/cpt-31298-balloon-dilation-of-frontal-and-sphenoid-sinus-openings