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Procedure price report · Pathology

CSTB gene test, full sequence

CPT 81189the billing code this page is about

Laboratory test that reads the entire coding sequence of the CSTB gene from a patient sample.

Hospitals typically charge $379 cash for this outpatient procedure — the median across 195 hospitals that filed a usable cash price; the average of the middle 60% is $453. Most fall between $275 and $695 (20th–80th percentile).

Hospitals
195
States
32
Filings dated
Oct 2025 – 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 195 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
$212$275$379$634$1,161

The most expensive tenth of hospitals charges at least 5.5× what the cheapest tenth charges ($212 vs $1,161).

How the prices are spread

$148 – $190: 6 hospitals$148$190 – $244: 20 hospitals$244 – $313: 46 hospitals$244$313 – $401: 21 hospitals$401 – $515: 4 hospitals$401$515 – $661: 41 hospitals$661 – $847: 25 hospitals$661$847 – $1,087: 3 hospitals$1,087 – $1,394: 7 hospitals$1,087$1,394 – $1,788: 5 hospitals$1,394median $379price bands are equal on a log scale
Hospitals per price band (178 of 195 — the bands cover the 5th to 95th percentile)
FromToHospitals
$148$1906
$190$24420
$244$31346
$313$40121
$401$5154
$515$66141
$661$84725
$847$1,0873
$1,087$1,3947
$1,394$1,7885

By state

The median cash price in each state, against the national median of $379.

Alaska: no hospital in the corpus filed a usable priceAKMaine: no hospital in the corpus filed a usable priceMEVermont: no hospital in the corpus filed a usable priceVTNew Hampshire: no hospital in the corpus filed a usable priceNHWashington: 2 hospitals filed a usable price — fewer than 10, so no figureWAIdaho: no hospital in the corpus filed a usable priceIDMontana: no hospital in the corpus filed a usable priceMTNorth Dakota: no hospital in the corpus filed a usable priceNDMinnesota: no hospital in the corpus filed a usable priceMNIllinois: median $634 across 10 hospitalsIL$634Wisconsin: 4 hospitals filed a usable price — fewer than 10, so no figureWIMichigan: 4 hospitals filed a usable price — fewer than 10, so no figureMINew York: median $275 across 16 hospitalsNY$275Massachusetts: 6 hospitals filed a usable price — fewer than 10, so no figureMAOregon: 1 hospital filed a usable price — fewer than 10, so no figureORNevada: 1 hospital filed a usable price — fewer than 10, so no figureNVWyoming: no hospital in the corpus filed a usable priceWYSouth Dakota: no hospital in the corpus filed a usable priceSDIowa: no hospital in the corpus filed a usable priceIAIndiana: median $396 across 12 hospitalsIN$396Ohio: median $695 across 17 hospitalsOH$695Pennsylvania: median $190 across 10 hospitalsPA$190New Jersey: median $302 across 23 hospitalsNJ$302Connecticut: 1 hospital filed a usable price — fewer than 10, so no figureCTRhode Island: no hospital in the corpus filed a usable priceRICalifornia: median $627 across 19 hospitalsCA$627Utah: 1 hospital filed a usable price — fewer than 10, so no figureUTColorado: no hospital in the corpus filed a usable priceCONebraska: no hospital in the corpus filed a usable priceNEMissouri: 3 hospitals filed a usable price — fewer than 10, so no figureMOKentucky: 3 hospitals filed a usable price — fewer than 10, so no figureKYWest Virginia: 2 hospitals filed a usable price — fewer than 10, so no figureWVVirginia: median $216 across 10 hospitalsVA$216Maryland: 4 hospitals filed a usable price — fewer than 10, so no figureMDDelaware: 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: 2 hospitals filed a usable price — fewer than 10, so no figureARTennessee: median $216 across 11 hospitalsTN$216North Carolina: 8 hospitals filed a usable price — fewer than 10, so no figureNCSouth Carolina: no hospital in the corpus filed a usable priceSCOklahoma: 2 hospitals filed a usable price — fewer than 10, so no figureOKLouisiana: 1 hospital filed a usable price — fewer than 10, so no figureLAMississippi: 1 hospital filed a usable price — fewer than 10, so no figureMSAlabama: no hospital in the corpus filed a usable priceALGeorgia: median $288 across 10 hospitalsGA$288Hawaii: no hospital in the corpus filed a usable priceHITexas: 7 hospitals filed a usable price — fewer than 10, so no figureTXFlorida: 1 hospital filed a usable price — fewer than 10, so no figureFL
Cash price by state, most expensive first. National median $379. A state needs at least 10 hospitals with a usable price to show a figure.
StateHospitalsMedianvs national20th–80th
Ohio OH17$695+83%$695 – $695
Illinois IL10$634+67%$441 – $634
California CA19$627+65%$627 – $627
Indiana IN12$396+4%$348 – $535
New Jersey NJ23$302−20%$275 – $302
Georgia GA10$288−24%$288 – $288
New York NY16$275−28%$275 – $275
Tennessee TN11$216−43%$216 – $216
Virginia VA10$216−43%$212 – $2,439
Pennsylvania PA10$190−50%$157 – $214
North Carolina NC8not enough hospitals filed a usable price
Texas TX7not enough hospitals filed a usable price
Massachusetts MA6not enough hospitals filed a usable price
Maryland MD4not enough hospitals filed a usable price
Michigan MI4not enough hospitals filed a usable price
Wisconsin WI4not enough hospitals filed a usable price
Kentucky KY3not enough hospitals filed a usable price
Missouri MO3not enough hospitals filed a usable price
Arkansas AR2not enough hospitals filed a usable price
Oklahoma OK2not enough hospitals filed a usable price
Washington WA2not enough hospitals filed a usable price
West Virginia WV2not enough hospitals filed a usable price
Arizona AZ1not enough hospitals filed a usable price
Connecticut CT1not enough hospitals filed a usable price
Florida FL1not enough hospitals filed a usable price
Kansas KS1not enough hospitals filed a usable price
Louisiana LA1not enough hospitals filed a usable price
Mississippi MS1not 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
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 $379.

Cash price by hospital segment. A segment needs at least 20 hospitals to show a figure.
SegmentHospitalsMedian20th–80th
Hospital type
Acute care159$338$275 – $695
Children’s12fewer than 20 hospitals
Critical access24$547$288 – $695
Ownership
For-profit10fewer than 20 hospitals
Government22$288$275 – $536
Non-profit163$379$229 – $695
System affiliation
Part of a system181$396$275 – $695
Independent14fewer than 20 hospitals

Cash price vs list price

Median list price (chargemaster)$976
Median cash price$379
Cash as a share of list, median hospital56%

At the typical hospital, asking for the cash price cuts the list price by about 44%. 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

116 hospitals filed a usable inpatient cash price for this code. The median is $627 and the average of the middle 60% is $602; most fall between $288 and $1,260.

Cash price percentiles, inpatient, across 116 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
$216$308$627$837$2,439

The most expensive tenth of hospitals charges at least 11× what the cheapest tenth charges ($216 vs $2,439).

Of the 140 hospitals that filed this code inpatient, 116 gave a usable cash price; 21 carried a plausibility flag, 1 filed a number their own filing marks as not a price, 0 gave an estimate, and 2 a list price only.

How complete is this

195 of the 3,956 hospitals with a price file in our corpus (5%) filed a usable outpatient cash price for this code, and those are the hospitals every figure on this page is computed from.

What the 219 hospitals that filed this code at all gave us
Usable cash price — counted195
Cash price carrying a plausibility flag — shown on the compare tool, excluded here21
A number the filing itself marks as not a price (a placeholder, a ratio) — excluded2
An estimate rather than a filed cash price — excluded0
A list price only, no cash figure — excluded1
Hospitals that filed this code219

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 5, 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 Pathology family.

Hospitals file this code under descriptions such as CSTB GENE FULL GENE SEQUENCE.

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, “CSTB gene test, full sequence (CPT 81189) — cash price report,” computed September 25, 2026. https://hospitalrates.com/procedures/cpt-81189-cstb-gene-test-full-sequence