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Procedure price report · Microscopic examination (bacterial smear, culture, toxicology)

Unlisted chromosome analysis study

CPT 88299the billing code this page is about

A laboratory study of a sample's chromosomes that has no specific billing code of its own; used when the genetic testing performed does not match any listed cytogenetic code.

Hospitals typically charge $142 cash for this outpatient procedure — the median across 397 hospitals that filed a usable cash price; the average of the middle 60% is $163. Most fall between $63 and $326 (20th–80th percentile).

Hospitals
397
States
45
Filings dated
Jul 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 397 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
$44$72$142$300$674

The most expensive tenth of hospitals charges at least 15× what the cheapest tenth charges ($44 vs $674).

How the prices are spread

$31 – $43: 17 hospitals$31$43 – $59: 34 hospitals$59 – $83: 62 hospitals$59$83 – $116: 25 hospitals$116 – $162: 59 hospitals$116$162 – $226: 46 hospitals$226 – $315: 52 hospitals$226$315 – $440: 23 hospitals$440 – $615: 16 hospitals$440$615 – $858: 25 hospitals$615median $142price bands are equal on a log scale
Hospitals per price band (359 of 397 — the bands cover the 5th to 95th percentile)
FromToHospitals
$31$4317
$43$5934
$59$8362
$83$11625
$116$16259
$162$22646
$226$31552
$315$44023
$440$61516
$615$85825

Against Medicare

Medicare pays (OPPS 2026, national rate)$53
Median cash price$142
Cash as a multiple of Medicare2.7×

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 $142.

Alaska: 3 hospitals filed a usable price — fewer than 10, so no figureAKMaine: no hospital in the corpus filed a usable priceMEVermont: 1 hospital filed a usable price — fewer than 10, so no figureVTNew Hampshire: no hospital in the corpus filed a usable priceNHWashington: median $121 across 13 hospitalsWA$121Idaho: no hospital in the corpus filed a usable priceIDMontana: 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: median $142 across 21 hospitalsMN$142Illinois: median $311 across 25 hospitalsIL$311Wisconsin: 6 hospitals filed a usable price — fewer than 10, so no figureWIMichigan: 8 hospitals filed a usable price — fewer than 10, so no figureMINew York: median $65 across 38 hospitalsNY$65Massachusetts: median $133 across 14 hospitalsMA$133Oregon: 7 hospitals filed a usable price — fewer than 10, so no figureORNevada: no hospital in the corpus filed a usable priceNVWyoming: 2 hospitals filed a usable price — fewer than 10, so no figureWYSouth Dakota: 1 hospital filed a usable price — fewer than 10, so no figureSDIowa: 8 hospitals filed a usable price — fewer than 10, so no figureIAIndiana: 7 hospitals filed a usable price — fewer than 10, so no figureINOhio: median $138 across 11 hospitalsOH$138Pennsylvania: median $87 across 13 hospitalsPA$87New Jersey: median $59 across 13 hospitalsNJ$59Connecticut: 5 hospitals filed a usable price — fewer than 10, so no figureCTRhode Island: 1 hospital filed a usable price — fewer than 10, so no figureRICalifornia: median $82 across 40 hospitalsCA$82Utah: 2 hospitals filed a usable price — fewer than 10, so no figureUTColorado: median $218 across 19 hospitalsCO$218Nebraska: 3 hospitals filed a usable price — fewer than 10, so no figureNEMissouri: median $42 across 13 hospitalsMO$42Kentucky: median $124 across 12 hospitalsKY$124West Virginia: 1 hospital filed a usable price — fewer than 10, so no figureWVVirginia: 4 hospitals filed a usable price — fewer than 10, so no figureVAMaryland: median $287 across 11 hospitalsMD$287Delaware: 2 hospitals filed a usable price — fewer than 10, so no figureDEArizona: 2 hospitals filed a usable price — fewer than 10, so no figureAZNew Mexico: 3 hospitals filed a usable price — fewer than 10, so no figureNMKansas: 9 hospitals filed a usable price — fewer than 10, so no figureKSArkansas: 4 hospitals filed a usable price — fewer than 10, so no figureARTennessee: 5 hospitals filed a usable price — fewer than 10, so no figureTNNorth Carolina: 5 hospitals filed a usable price — fewer than 10, so no figureNCSouth Carolina: 3 hospitals filed a usable price — fewer than 10, so no figureSCOklahoma: 6 hospitals filed a usable price — fewer than 10, so no figureOKLouisiana: median $30 across 11 hospitalsLA$30Mississippi: 2 hospitals filed a usable price — fewer than 10, so no figureMSAlabama: 1 hospital filed a usable price — fewer than 10, so no figureALGeorgia: 5 hospitals filed a usable price — fewer than 10, so no figureGAHawaii: no hospital in the corpus filed a usable priceHITexas: median $310 across 22 hospitalsTX$310Florida: 8 hospitals filed a usable price — fewer than 10, so no figureFL
Cash price by state, most expensive first. National median $142. A state needs at least 10 hospitals with a usable price to show a figure.
StateHospitalsMedianvs national20th–80th
Illinois IL25$311+119%$84 – $811
Texas TX22$310+119%$211 – $310
Maryland MD11$287+103%$214 – $298
Colorado CO19$218+53%$209 – $604
Minnesota MN21$1420%$100 – $326
Ohio OH11$138−3%$66 – $276
Massachusetts MA14$133−6%$68 – $176
Kentucky KY12$124−13%$74 – $124
Washington WA13$121−14%$111 – $160
Pennsylvania PA13$87−39%$31 – $388
California CA40$82−42%$82 – $179
New York NY38$65−54%$62 – $283
New Jersey NJ13$59−58%$59 – $70
Missouri MO13$42−70%$24 – $300
Louisiana LA11$30−79%$16 – $143
Kansas KS9not enough hospitals filed a usable price
Florida FL8not enough hospitals filed a usable price
Iowa IA8not enough hospitals filed a usable price
Michigan MI8not enough hospitals filed a usable price
Indiana IN7not enough hospitals filed a usable price
Oregon OR7not enough hospitals filed a usable price
Oklahoma OK6not enough hospitals filed a usable price
Wisconsin WI6not enough hospitals filed a usable price
Connecticut CT5not enough hospitals filed a usable price
Georgia GA5not enough hospitals filed a usable price
North Carolina NC5not enough hospitals filed a usable price
North Dakota ND5not enough hospitals filed a usable price
Tennessee TN5not enough hospitals filed a usable price
Arkansas AR4not enough hospitals filed a usable price
Virginia VA4not enough hospitals filed a usable price
Alaska AK3not enough hospitals filed a usable price
Nebraska NE3not enough hospitals filed a usable price
New Mexico NM3not enough hospitals filed a usable price
South Carolina SC3not enough hospitals filed a usable price
Arizona AZ2not enough hospitals filed a usable price
Delaware DE2not enough hospitals filed a usable price
Mississippi MS2not enough hospitals filed a usable price
Montana MT2not enough hospitals filed a usable price
Utah UT2not enough hospitals filed a usable price
Wyoming WY2not enough hospitals filed a usable price
Alabama AL1not enough hospitals filed a usable price
Rhode Island RI1not enough hospitals filed a usable price
South Dakota SD1not enough hospitals filed a usable price
Vermont VT1not enough hospitals filed a usable price
West Virginia WV1not 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 $142.

Cash price by hospital segment. A segment needs at least 20 hospitals to show a figure.
SegmentHospitalsMedian20th–80th
Hospital type
Acute care331$138$63 – $310
Children’s16fewer than 20 hospitals
Critical access49$136$55 – $472
Ownership
For-profit33$218$43 – $310
Government49$124$54 – $695
Non-profit314$141$66 – $320
System affiliation
Part of a system343$136$63 – $310
Independent54$157$57 – $501

Cash price vs list price

Median list price (chargemaster)$283
Median cash price$142
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

261 hospitals filed a usable inpatient cash price for this code. The median is $160 and the average of the middle 60% is $185; most fall between $82 and $373.

Cash price percentiles, inpatient, across 261 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$82$160$310$696

The most expensive tenth of hospitals charges at least 16× what the cheapest tenth charges ($43 vs $696).

Of the 289 hospitals that filed this code inpatient, 261 gave a usable cash price; 20 carried a plausibility flag, 0 filed a number their own filing marks as not a price, 0 gave an estimate, and 8 a list price only.

How complete is this

397 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 429 hospitals that filed this code at all gave us
Usable cash price — counted397
Cash price carrying a plausibility flag — shown on the compare tool, excluded here23
A number the filing itself marks as not a price (a placeholder, a ratio) — excluded1
An estimate rather than a filed cash price — excluded0
A list price only, no cash figure — excluded8
Hospitals that filed this code429

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 24, 2026. The percentiles and averages use only the “counted” row.

Related procedures

Part of the Microscopic examination (bacterial smear, culture, toxicology) family.

Hospitals file this code under descriptions such as UNLISTED CYTOGENETIC STUDY.

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, “Unlisted chromosome analysis study (CPT 88299) — cash price report,” computed September 25, 2026. https://hospitalrates.com/procedures/cpt-88299-unlisted-chromosome-analysis-study