HRHospitalRates.comCompare prices

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

Sinus endoscopy with widening of the sphenoid sinus opening

CPT 31297the billing code this page is about

A lighted scope is passed into the nose and the drainage opening of the sphenoid sinus is stretched open, such as with a balloon, to improve drainage.

Hospitals typically charge $4,670 cash for this outpatient procedure — the median across 405 hospitals that filed a usable cash price; the average of the middle 60% is $5,121. Most fall between $1,866 and $8,661 (20th–80th percentile).

Hospitals
405
States
45
Filings dated
Mar 2023 – 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 405 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
$634$2,559$4,670$8,152$12,890

The most expensive tenth of hospitals charges at least 20× what the cheapest tenth charges ($634 vs $12,890).

How the prices are spread

$274 – $416: 10 hospitals$274$416 – $631: 8 hospitals$631 – $957: 17 hospitals$631$957 – $1,453: 8 hospitals$1,453 – $2,204: 33 hospitals$1,453$2,204 – $3,344: 44 hospitals$3,344 – $5,075: 82 hospitals$3,344$5,075 – $7,700: 60 hospitals$7,700 – $11,685: 61 hospitals$7,700$11,685 – $17,730: 42 hospitals$11,685median $4,670price bands are equal on a log scale
Hospitals per price band (365 of 405 — the bands cover the 5th to 95th percentile)
FromToHospitals
$274$41610
$416$6318
$631$95717
$957$1,4538
$1,453$2,20433
$2,204$3,34444
$3,344$5,07582
$5,075$7,70060
$7,700$11,68561
$11,685$17,73042

Against Medicare

Medicare pays (OPPS 2026, national rate)$7,210
Median cash price$4,670
Cash as a multiple of Medicare0.65×

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 $4,670.

Alaska: 1 hospital filed a usable price — fewer than 10, so no figureAKMaine: 1 hospital filed a usable price — fewer than 10, so no figureMEVermont: 5 hospitals filed a usable price — fewer than 10, so no figureVTNew Hampshire: no hospital in the corpus filed a usable priceNHWashington: 5 hospitals filed a usable price — fewer than 10, so no figureWAIdaho: 9 hospitals filed a usable price — fewer than 10, so no figureIDMontana: 2 hospitals filed a usable price — fewer than 10, so no figureMTNorth Dakota: 5 hospitals filed a usable price — fewer than 10, so no figureNDMinnesota: 3 hospitals filed a usable price — fewer than 10, so no figureMNIllinois: median $3,325 across 18 hospitalsIL$3,325Wisconsin: median $7,831 across 23 hospitalsWI$7,831Michigan: median $7,831 across 16 hospitalsMI$7,831New York: median $8,192 across 25 hospitalsNY$8,192Massachusetts: 2 hospitals filed a usable price — fewer than 10, so no figureMAOregon: 2 hospitals filed a usable price — fewer than 10, so no figureORNevada: 2 hospitals filed a usable price — fewer than 10, so no figureNVWyoming: 3 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 $4,534 across 18 hospitalsIA$4,534Indiana: median $2,067 across 19 hospitalsIN$2,067Ohio: median $647 across 11 hospitalsOH$647Pennsylvania: median $8,338 across 22 hospitalsPA$8,338New Jersey: median $6,839 across 26 hospitalsNJ$6,839Connecticut: 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 $4,491 across 44 hospitalsCA$4,491Utah: no hospital in the corpus filed a usable priceUTColorado: 1 hospital filed a usable price — fewer than 10, so no figureCONebraska: 6 hospitals filed a usable price — fewer than 10, so no figureNEMissouri: 8 hospitals filed a usable price — fewer than 10, so no figureMOKentucky: 8 hospitals filed a usable price — fewer than 10, so no figureKYWest Virginia: 6 hospitals filed a usable price — fewer than 10, so no figureWVVirginia: no hospital in the corpus filed a usable priceVAMaryland: no hospital in the corpus filed a usable priceMDDelaware: no hospital in the corpus filed a usable priceDEArizona: 4 hospitals filed a usable price — fewer than 10, so no figureAZNew Mexico: 1 hospital 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: 3 hospitals filed a usable price — fewer than 10, so no figureNCSouth Carolina: median $4,981 across 11 hospitalsSC$4,981Oklahoma: median $237 across 12 hospitalsOK$237Louisiana: median $3,801 across 10 hospitalsLA$3,801Mississippi: 6 hospitals filed a usable price — fewer than 10, so no figureMSAlabama: 6 hospitals filed a usable price — fewer than 10, so no figureALGeorgia: 3 hospitals filed a usable price — fewer than 10, so no figureGAHawaii: 6 hospitals filed a usable price — fewer than 10, so no figureHITexas: median $5,107 across 25 hospitalsTX$5,107Florida: 8 hospitals filed a usable price — fewer than 10, so no figureFL
Cash price by state, most expensive first. National median $4,670. A state needs at least 10 hospitals with a usable price to show a figure.
StateHospitalsMedianvs national20th–80th
Pennsylvania PA22$8,338+79%$6,942 – $11,703
New York NY25$8,192+75%$6,939 – $8,377
Michigan MI16$7,831+68%$2,696 – $9,704
Wisconsin WI23$7,831+68%$7,831 – $12,629
New Jersey NJ26$6,839+46%$4,881 – $8,152
Texas TX25$5,107+9%$1,885 – $6,612
South Carolina SC11$4,981+7%$4,457 – $12,460
Iowa IA18$4,534−3%$4,534 – $5,951
California CA44$4,491−4%$3,099 – $4,670
Louisiana LA10$3,801−19%$2,062 – $4,501
Illinois IL18$3,325−29%$900 – $6,148
Indiana IN19$2,067−56%$1,371 – $3,325
Ohio OH11$647−86%$634 – $20,698
Oklahoma OK12$237−95%$237 – $237
Idaho ID9not enough hospitals filed a usable price
Florida FL8not enough hospitals filed a usable price
Kentucky KY8not enough hospitals filed a usable price
Missouri MO8not enough hospitals filed a usable price
Tennessee TN8not enough hospitals filed a usable price
Alabama AL6not enough hospitals filed a usable price
Hawaii HI6not enough hospitals filed a usable price
Mississippi MS6not enough hospitals filed a usable price
Nebraska NE6not enough hospitals filed a usable price
West Virginia WV6not enough hospitals filed a usable price
Kansas KS5not enough hospitals filed a usable price
North Dakota ND5not enough hospitals filed a usable price
Vermont VT5not enough hospitals filed a usable price
Washington WA5not enough hospitals filed a usable price
Arizona AZ4not enough hospitals filed a usable price
Arkansas AR3not enough hospitals filed a usable price
Georgia GA3not enough hospitals filed a usable price
Minnesota MN3not enough hospitals filed a usable price
North Carolina NC3not enough hospitals filed a usable price
Wyoming WY3not enough hospitals filed a usable price
Massachusetts MA2not enough hospitals filed a usable price
Montana MT2not enough hospitals filed a usable price
Nevada NV2not enough hospitals filed a usable price
Oregon OR2not enough hospitals filed a usable price
Alaska AK1not enough hospitals filed a usable price
Colorado CO1not enough hospitals filed a usable price
Connecticut CT1not enough hospitals filed a usable price
Maine ME1not enough hospitals filed a usable price
New Mexico NM1not enough hospitals filed a usable price
Rhode Island RI1not 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 $4,670.

Cash price by hospital segment. A segment needs at least 20 hospitals to show a figure.
SegmentHospitalsMedian20th–80th
Hospital type
Acute care320$4,670$2,078 – $8,426
Children’s5fewer than 20 hospitals
Critical access79$3,842$900 – $10,397
Ownership
For-profit44$4,002$1,885 – $10,181
Government61$5,590$1,850 – $9,138
Non-profit299$4,670$1,885 – $8,377
System affiliation
Part of a system337$4,670$1,885 – $8,426
Independent68$3,999$487 – $9,131

Cash price vs list price

Median list price (chargemaster)$5,960
Median cash price$4,670
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

230 hospitals filed a usable inpatient cash price for this code. The median is $4,534 and the average of the middle 60% is $4,703; most fall between $1,885 and $7,831.

Cash price percentiles, inpatient, across 230 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
$347$2,730$4,534$7,740$11,955

The most expensive tenth of hospitals charges at least 35× what the cheapest tenth charges ($347 vs $11,955).

Of the 269 hospitals that filed this code inpatient, 230 gave a usable cash price; 27 carried a plausibility flag, 0 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

405 of the 3,956 hospitals with a price file in our corpus (10%) filed a usable outpatient cash price for this code, and those are the hospitals every figure on this page is computed from.

What the 484 hospitals that filed this code at all gave us
Usable cash price — counted405
Cash price carrying a plausibility flag — shown on the compare tool, excluded here66
A number the filing itself marks as not a price (a placeholder, a ratio) — excluded1
An estimate rather than a filed cash price — excluded1
A list price only, no cash figure — excluded11
Hospitals that filed this code484

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 24, 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 Sphenoid 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, “Sinus endoscopy with widening of the sphenoid sinus opening (CPT 31297) — cash price report,” computed September 25, 2026. https://hospitalrates.com/procedures/cpt-31297-sinus-endoscopy-with-widening-of-the-sphenoid-sinus-opening