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Procedure price report · Pathology

VKORC1 gene test for common variants

CPT 81355the billing code this page is about

Laboratory test of the VKORC1 gene for common variants that influence how a person responds to warfarin, a blood thinner.

Hospitals typically charge $168 cash for this outpatient procedure — the median across 569 hospitals that filed a usable cash price; the average of the middle 60% is $172. Most fall between $88 and $323 (20th–80th percentile).

Hospitals
569
States
44
Filings dated
Dec 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 569 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
$54$92$168$275$506

The most expensive tenth of hospitals charges at least 9.3× what the cheapest tenth charges ($54 vs $506).

How the prices are spread

$34 – $47: 22 hospitals$34$47 – $64: 27 hospitals$64 – $88: 36 hospitals$64$88 – $120: 115 hospitals$120 – $164: 52 hospitals$120$164 – $225: 88 hospitals$225 – $309: 82 hospitals$225$309 – $423: 44 hospitals$423 – $580: 32 hospitals$423$580 – $794: 15 hospitals$580median $168price bands are equal on a log scale
Hospitals per price band (513 of 569 — the bands cover the 5th to 95th percentile)
FromToHospitals
$34$4722
$47$6427
$64$8836
$88$120115
$120$16452
$164$22588
$225$30982
$309$42344
$423$58032
$580$79415

By state

The median cash price in each state, against the national median of $168.

Alaska: 3 hospitals filed a usable price — fewer than 10, so no figureAKMaine: 2 hospitals filed a usable price — fewer than 10, so no figureMEVermont: no hospital in the corpus filed a usable priceVTNew Hampshire: no hospital in the corpus filed a usable priceNHWashington: median $111 across 13 hospitalsWA$111Idaho: no hospital in the corpus filed a usable priceIDMontana: no hospital in the corpus filed a usable priceMTNorth Dakota: 4 hospitals filed a usable price — fewer than 10, so no figureNDMinnesota: 2 hospitals filed a usable price — fewer than 10, so no figureMNIllinois: median $186 across 25 hospitalsIL$186Wisconsin: 3 hospitals filed a usable price — fewer than 10, so no figureWIMichigan: median $91 across 18 hospitalsMI$91New York: median $88 across 22 hospitalsNY$88Massachusetts: median $187 across 12 hospitalsMA$187Oregon: 4 hospitals filed a usable price — fewer than 10, so no figureORNevada: 6 hospitals filed a usable price — fewer than 10, so no figureNVWyoming: 4 hospitals filed a usable price — fewer than 10, so no figureWYSouth Dakota: no hospital in the corpus filed a usable priceSDIowa: median $177 across 15 hospitalsIA$177Indiana: median $128 across 24 hospitalsIN$128Ohio: median $235 across 41 hospitalsOH$235Pennsylvania: median $173 across 30 hospitalsPA$173New Jersey: median $97 across 28 hospitalsNJ$97Connecticut: 7 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 $202 across 23 hospitalsCA$202Utah: 1 hospital filed a usable price — fewer than 10, so no figureUTColorado: median $114 across 14 hospitalsCO$114Nebraska: 3 hospitals filed a usable price — fewer than 10, so no figureNEMissouri: 6 hospitals filed a usable price — fewer than 10, so no figureMOKentucky: median $122 across 16 hospitalsKY$122West Virginia: 4 hospitals filed a usable price — fewer than 10, so no figureWVVirginia: median $113 across 16 hospitalsVA$113Maryland: 8 hospitals filed a usable price — fewer than 10, so no figureMDDelaware: 3 hospitals filed a usable price — fewer than 10, so no figureDEArizona: 8 hospitals filed a usable price — fewer than 10, so no figureAZNew Mexico: no hospital in the corpus filed a usable priceNMKansas: 4 hospitals filed a usable price — fewer than 10, so no figureKSArkansas: 3 hospitals filed a usable price — fewer than 10, so no figureARTennessee: median $116 across 15 hospitalsTN$116North Carolina: median $255 across 13 hospitalsNC$255South Carolina: 1 hospital filed a usable price — fewer than 10, so no figureSCOklahoma: median $319 across 14 hospitalsOK$319Louisiana: 8 hospitals filed a usable price — fewer than 10, so no figureLAMississippi: 7 hospitals filed a usable price — fewer than 10, so no figureMSAlabama: 4 hospitals filed a usable price — fewer than 10, so no figureALGeorgia: median $331 across 26 hospitalsGA$331Hawaii: 1 hospital filed a usable price — fewer than 10, so no figureHITexas: median $120 across 73 hospitalsTX$120Florida: median $80 across 34 hospitalsFL$80
Cash price by state, most expensive first. National median $168. A state needs at least 10 hospitals with a usable price to show a figure.
StateHospitalsMedianvs national20th–80th
Georgia GA26$331+96%$288 – $640
Oklahoma OK14$319+89%$265 – $412
North Carolina NC13$255+52%$78 – $255
Ohio OH41$235+39%$157 – $396
California CA23$202+20%$202 – $202
Massachusetts MA12$187+11%$113 – $255
Illinois IL25$186+10%$172 – $363
Iowa IA15$177+5%$177 – $177
Pennsylvania PA30$173+3%$61 – $515
Indiana IN24$128−24%$95 – $200
Kentucky KY16$122−27%$122 – $183
Texas TX73$120−29%$40 – $275
Tennessee TN15$116−31%$41 – $116
Colorado CO14$114−32%$82 – $1,681
Virginia VA16$113−33%$108 – $123
Washington WA13$111−34%$111 – $261
New Jersey NJ28$97−42%$88 – $101
Michigan MI18$91−46%$69 – $122
New York NY22$88−48%$88 – $340
Florida FL34$80−52%$32 – $117
Arizona AZ8not enough hospitals filed a usable price
Louisiana LA8not enough hospitals filed a usable price
Maryland MD8not enough hospitals filed a usable price
Connecticut CT7not enough hospitals filed a usable price
Mississippi MS7not enough hospitals filed a usable price
Missouri MO6not enough hospitals filed a usable price
Nevada NV6not enough hospitals filed a usable price
Alabama AL4not enough hospitals filed a usable price
Kansas KS4not enough hospitals filed a usable price
North Dakota ND4not enough hospitals filed a usable price
Oregon OR4not enough hospitals filed a usable price
West Virginia WV4not enough hospitals filed a usable price
Wyoming WY4not enough hospitals filed a usable price
Alaska AK3not enough hospitals filed a usable price
Arkansas AR3not enough hospitals filed a usable price
Delaware DE3not enough hospitals filed a usable price
Nebraska NE3not enough hospitals filed a usable price
Wisconsin WI3not enough hospitals filed a usable price
Maine ME2not enough hospitals filed a usable price
Minnesota MN2not enough hospitals filed a usable price
Hawaii HI1not enough hospitals filed a usable price
Rhode Island RI1not enough hospitals filed a usable price
South Carolina SC1not 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 $168.

Cash price by hospital segment. A segment needs at least 20 hospitals to show a figure.
SegmentHospitalsMedian20th–80th
Hospital type
Acute care477$157$81 – $331
Children’s14fewer than 20 hospitals
Critical access76$195$120 – $319
Ownership
For-profit56$211$60 – $491
Government75$147$85 – $255
Non-profit436$177$88 – $319
System affiliation
Part of a system507$172$88 – $319
Independent62$154$72 – $331

Cash price vs list price

Median list price (chargemaster)$280
Median cash price$168
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

376 hospitals filed a usable inpatient cash price for this code. The median is $189 and the average of the middle 60% is $189; most fall between $91 and $325.

Cash price percentiles, inpatient, across 376 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
$51$113$189$288$515

The most expensive tenth of hospitals charges at least 10× what the cheapest tenth charges ($51 vs $515).

Of the 445 hospitals that filed this code inpatient, 376 gave a usable cash price; 54 carried a plausibility flag, 0 filed a number their own filing marks as not a price, 0 gave an estimate, and 15 a list price only.

How complete is this

569 of the 3,956 hospitals with a price file in our corpus (14%) filed a usable outpatient cash price for this code, and those are the hospitals every figure on this page is computed from.

What the 649 hospitals that filed this code at all gave us
Usable cash price — counted569
Cash price carrying a plausibility flag — shown on the compare tool, excluded here64
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 — excluded14
Hospitals that filed this code649

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 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 VKORC1 GENE.

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, “VKORC1 gene test for common variants (CPT 81355) — cash price report,” computed September 25, 2026. https://hospitalrates.com/procedures/cpt-81355-vkorc1-gene-test-for-common-variants