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Procedure price report · Other Laboratory

La Crosse encephalitis virus antibody test

CPT 86651the billing code this page is about

Blood test that looks for antibodies to California (La Crosse) encephalitis virus, a mosquito-borne infection.

Hospitals typically charge $47 cash for this outpatient procedure — the median across 1,888 hospitals that filed a usable cash price; the average of the middle 60% is $50. Most fall between $20 and $106 (20th–80th percentile).

Hospitals
1,888
States
50
Filings dated
Dec 2023 – Sep 2026
Computed
September 25, 2026
Prices checked
through September 25, 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 1,888 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
$13$24$47$86$161

The most expensive tenth of hospitals charges at least 13× what the cheapest tenth charges ($13 vs $161).

How the prices are spread

$10 – $14: 152 hospitals$10$14 – $19: 118 hospitals$19 – $27: 175 hospitals$19$27 – $37: 226 hospitals$37 – $51: 270 hospitals$37$51 – $71: 256 hospitals$71 – $98: 186 hospitals$71$98 – $135: 128 hospitals$135 – $187: 149 hospitals$135$187 – $259: 43 hospitals$187median $47price bands are equal on a log scale
Hospitals per price band (1,703 of 1,888 — the bands cover the 5th to 95th percentile)
FromToHospitals
$10$14152
$14$19118
$19$27175
$27$37226
$37$51270
$51$71256
$71$98186
$98$135128
$135$187149
$187$25943

By state

The median cash price in each state, against the national median of $47.

Alaska: 7 hospitals filed a usable price — fewer than 10, so no figureAKMaine: median $31 across 20 hospitalsME$31Vermont: 9 hospitals filed a usable price — fewer than 10, so no figureVTNew Hampshire: median $23 across 10 hospitalsNH$23Washington: median $39 across 22 hospitalsWA$39Idaho: 6 hospitals filed a usable price — fewer than 10, so no figureIDMontana: 5 hospitals filed a usable price — fewer than 10, so no figureMTNorth Dakota: median $25 across 15 hospitalsND$25Minnesota: median $42 across 56 hospitalsMN$42Illinois: median $55 across 80 hospitalsIL$55Wisconsin: median $61 across 70 hospitalsWI$61Michigan: median $15 across 49 hospitalsMI$15New York: median $27 across 57 hospitalsNY$27Massachusetts: median $57 across 35 hospitalsMA$57Oregon: median $50 across 15 hospitalsOR$50Nevada: median $40 across 12 hospitalsNV$40Wyoming: 8 hospitals filed a usable price — fewer than 10, so no figureWYSouth Dakota: 5 hospitals filed a usable price — fewer than 10, so no figureSDIowa: median $49 across 31 hospitalsIA$49Indiana: median $43 across 60 hospitalsIN$43Ohio: median $66 across 88 hospitalsOH$66Pennsylvania: median $58 across 82 hospitalsPA$58New Jersey: median $15 across 46 hospitalsNJ$15Connecticut: 8 hospitals filed a usable price — fewer than 10, so no figureCTRhode Island: 7 hospitals filed a usable price — fewer than 10, so no figureRICalifornia: median $61 across 87 hospitalsCA$61Utah: median $69 across 32 hospitalsUT$69Colorado: median $72 across 32 hospitalsCO$72Nebraska: median $64 across 13 hospitalsNE$64Missouri: median $46 across 50 hospitalsMO$46Kentucky: median $86 across 29 hospitalsKY$86West Virginia: median $5 across 20 hospitalsWV$5Virginia: median $47 across 58 hospitalsVA$47Maryland: median $128 across 31 hospitalsMD$128Delaware: 6 hospitals filed a usable price — fewer than 10, so no figureDEArizona: median $86 across 29 hospitalsAZ$86New Mexico: 7 hospitals filed a usable price — fewer than 10, so no figureNMKansas: median $98 across 25 hospitalsKS$98Arkansas: median $32 across 21 hospitalsAR$32Tennessee: median $17 across 42 hospitalsTN$17North Carolina: median $29 across 71 hospitalsNC$29South Carolina: median $57 across 38 hospitalsSC$57Oklahoma: median $41 across 38 hospitalsOK$41Louisiana: median $30 across 40 hospitalsLA$30Mississippi: median $27 across 37 hospitalsMS$27Alabama: median $49 across 24 hospitalsAL$49Georgia: median $48 across 76 hospitalsGA$48Hawaii: 4 hospitals filed a usable price — fewer than 10, so no figureHITexas: median $62 across 163 hospitalsTX$62Florida: median $32 across 112 hospitalsFL$32
Cash price by state, most expensive first. National median $47. A state needs at least 10 hospitals with a usable price to show a figure.
StateHospitalsMedianvs national20th–80th
Maryland MD31$128+169%$94 – $147
Kansas KS25$98+106%$49 – $238
Arizona AZ29$86+82%$15 – $140
Kentucky KY29$86+82%$36 – $167
Colorado CO32$72+51%$48 – $312
Utah UT32$69+46%$69 – $81
Ohio OH88$66+38%$40 – $136
Nebraska NE13$64+35%$50 – $100
Texas TX163$62+31%$28 – $214
Wisconsin WI70$61+29%$34 – $84
California CA87$61+28%$12 – $161
Pennsylvania PA82$58+23%$15 – $147
Massachusetts MA35$57+20%$37 – $79
South Carolina SC38$57+19%$35 – $72
Illinois IL80$55+15%$26 – $128
Oregon OR15$50+5%$20 – $63
Iowa IA31$49+2%$49 – $64
Alabama AL24$49+2%$22 – $116
Georgia GA76$48+2%$27 – $74
Virginia VA58$470%$12 – $102
Missouri MO50$46−3%$38 – $62
Indiana IN60$43−10%$21 – $106
Minnesota MN56$42−12%$21 – $116
Oklahoma OK38$41−13%$24 – $64
Nevada NV12$40−16%$13 – $103
Washington WA22$39−19%$29 – $61
Florida FL112$32−32%$11 – $85
Arkansas AR21$32−32%$21 – $49
Maine ME20$31−34%$7 – $96
Louisiana LA40$30−37%$17 – $42
North Carolina NC71$29−38%$22 – $94
New York NY57$27−43%$14 – $88
Mississippi MS37$27−44%$8 – $45
North Dakota ND15$25−47%$21 – $92
New Hampshire NH10$23−52%$14 – $43
Tennessee TN42$17−64%$12 – $51
Michigan MI49$15−68%$8 – $32
New Jersey NJ46$15−68%$13 – $66
West Virginia WV20$5−91%$4 – $35
Vermont VT9not enough hospitals filed a usable price
Connecticut CT8not enough hospitals filed a usable price
Wyoming WY8not enough hospitals filed a usable price
Alaska AK7not enough hospitals filed a usable price
New Mexico NM7not enough hospitals filed a usable price
Rhode Island RI7not enough hospitals filed a usable price
Delaware DE6not enough hospitals filed a usable price
Idaho ID6not enough hospitals filed a usable price
Montana MT5not enough hospitals filed a usable price
South Dakota SD5not enough hospitals filed a usable price
Hawaii HI4not 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 $47.

Cash price by hospital segment. A segment needs at least 20 hospitals to show a figure.
SegmentHospitalsMedian20th–80th
Hospital type
Acute care1,518$47$19 – $107
Children’s38$36$22 – $79
Critical access325$51$24 – $99
Ownership
For-profit275$59$22 – $187
Government252$39$20 – $77
Non-profit1,354$48$20 – $103
System affiliation
Part of a system1,628$47$19 – $107
Independent260$52$24 – $89

Cash price vs list price

Median list price (chargemaster)$81
Median cash price$47
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

1,337 hospitals filed a usable inpatient cash price for this code. The median is $50 and the average of the middle 60% is $54; most fall between $22 and $105.

Cash price percentiles, inpatient, across 1,337 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
$14$27$50$88$155

The most expensive tenth of hospitals charges at least 11× what the cheapest tenth charges ($14 vs $155).

Of the 1,479 hospitals that filed this code inpatient, 1,337 gave a usable cash price; 82 carried a plausibility flag, 0 filed a number their own filing marks as not a price, 0 gave an estimate, and 60 a list price only.

How complete is this

1,888 of the 3,956 hospitals with a price file in our corpus (48%) filed a usable outpatient cash price for this code, and those are the hospitals every figure on this page is computed from.

What the 2,067 hospitals that filed this code at all gave us
Usable cash price — counted1,888
Cash price carrying a plausibility flag — shown on the compare tool, excluded here104
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 — excluded74
Hospitals that filed this code2,067

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

Related procedures

Part of the Other Laboratory family.

Hospitals file this code under descriptions such as HC California Igg.

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, “La Crosse encephalitis virus antibody test (CPT 86651) — cash price report,” computed September 25, 2026. https://hospitalrates.com/procedures/cpt-86651-la-crosse-encephalitis-virus-antibody-test