HRHospitalRates.comCompare prices

Procedure price report · Other Laboratory

Blood test for early-response West Nile virus antibodies

CPT 86788the billing code this page is about

A blood test for IgM antibodies to West Nile virus, the antibody type that usually appears early after infection.

Hospitals typically charge $60 cash for this outpatient procedure — the median across 2,927 hospitals that filed a usable cash price; the average of the middle 60% is $63. Most fall between $26 and $120 (20th–80th percentile).

Hospitals
2,927
States
50
Filings dated
Mar 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 2,927 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
$19$31$60$102$178

The most expensive tenth of hospitals charges at least 9.5× what the cheapest tenth charges ($19 vs $178).

How the prices are spread

$15 – $20: 201 hospitals$15$20 – $26: 234 hospitals$26 – $35: 262 hospitals$26$35 – $46: 320 hospitals$46 – $61: 334 hospitals$46$61 – $81: 357 hospitals$81 – $107: 403 hospitals$81$107 – $142: 231 hospitals$142 – $187: 176 hospitals$142$187 – $248: 120 hospitals$187median $60price bands are equal on a log scale
Hospitals per price band (2,638 of 2,927 — the bands cover the 5th to 95th percentile)
FromToHospitals
$15$20201
$20$26234
$26$35262
$35$46320
$46$61334
$61$81357
$81$107403
$107$142231
$142$187176
$187$248120

By state

The median cash price in each state, against the national median of $60.

Alaska: median $76 across 11 hospitalsAK$76Maine: median $40 across 23 hospitalsME$40Vermont: median $121 across 12 hospitalsVT$121New Hampshire: median $54 across 22 hospitalsNH$54Washington: median $77 across 61 hospitalsWA$77Idaho: median $63 across 20 hospitalsID$63Montana: median $77 across 21 hospitalsMT$77North Dakota: median $84 across 34 hospitalsND$84Minnesota: median $66 across 98 hospitalsMN$66Illinois: median $78 across 121 hospitalsIL$78Wisconsin: median $62 across 99 hospitalsWI$62Michigan: median $21 across 63 hospitalsMI$21New York: median $30 across 99 hospitalsNY$30Massachusetts: median $82 across 47 hospitalsMA$82Oregon: median $51 across 40 hospitalsOR$51Nevada: median $69 across 18 hospitalsNV$69Wyoming: median $84 across 15 hospitalsWY$84South Dakota: median $86 across 40 hospitalsSD$86Iowa: median $69 across 78 hospitalsIA$69Indiana: median $43 across 91 hospitalsIN$43Ohio: median $75 across 132 hospitalsOH$75Pennsylvania: median $70 across 112 hospitalsPA$70New Jersey: median $19 across 55 hospitalsNJ$19Connecticut: median $75 across 22 hospitalsCT$75Rhode Island: median $58 across 10 hospitalsRI$58California: median $24 across 111 hospitalsCA$24Utah: median $105 across 40 hospitalsUT$105Colorado: median $68 across 60 hospitalsCO$68Nebraska: median $104 across 80 hospitalsNE$104Missouri: median $62 across 64 hospitalsMO$62Kentucky: median $71 across 56 hospitalsKY$71West Virginia: median $34 across 28 hospitalsWV$34Virginia: median $78 across 71 hospitalsVA$78Maryland: median $54 across 34 hospitalsMD$54Delaware: 7 hospitals filed a usable price — fewer than 10, so no figureDEArizona: median $51 across 36 hospitalsAZ$51New Mexico: median $92 across 21 hospitalsNM$92Kansas: median $79 across 79 hospitalsKS$79Arkansas: median $36 across 34 hospitalsAR$36Tennessee: median $51 across 73 hospitalsTN$51North Carolina: median $38 across 78 hospitalsNC$38South Carolina: median $93 across 47 hospitalsSC$93Oklahoma: median $56 across 68 hospitalsOK$56Louisiana: median $39 across 48 hospitalsLA$39Mississippi: median $49 across 54 hospitalsMS$49Alabama: median $61 across 38 hospitalsAL$61Georgia: median $64 across 88 hospitalsGA$64Hawaii: median $85 across 10 hospitalsHI$85Texas: median $41 across 222 hospitalsTX$41Florida: median $26 across 136 hospitalsFL$26
Cash price by state, most expensive first. National median $60. A state needs at least 10 hospitals with a usable price to show a figure.
StateHospitalsMedianvs national20th–80th
Vermont VT12$121+102%$80 – $136
Utah UT40$105+76%$91 – $124
Nebraska NE80$104+73%$43 – $157
South Carolina SC47$93+55%$40 – $98
New Mexico NM21$92+52%$62 – $105
South Dakota SD40$86+43%$62 – $156
Hawaii HI10$85+41%$43 – $135
North Dakota ND34$84+40%$32 – $113
Wyoming WY15$84+40%$50 – $102
Massachusetts MA47$82+36%$49 – $123
Kansas KS79$79+32%$45 – $141
Illinois IL121$78+31%$38 – $144
Virginia VA71$78+29%$26 – $104
Montana MT21$77+28%$57 – $122
Washington WA61$77+28%$50 – $117
Alaska AK11$76+27%$36 – $166
Ohio OH132$75+26%$43 – $144
Connecticut CT22$75+25%$53 – $140
Kentucky KY56$71+19%$39 – $212
Pennsylvania PA112$70+16%$20 – $198
Nevada NV18$69+15%$19 – $167
Iowa IA78$69+15%$49 – $119
Colorado CO60$68+13%$36 – $145
Minnesota MN98$66+11%$36 – $118
Georgia GA88$64+6%$41 – $175
Idaho ID20$63+5%$22 – $85
Wisconsin WI99$62+4%$43 – $92
Missouri MO64$62+3%$43 – $92
Alabama AL38$61+1%$33 – $187
Rhode Island RI10$58−3%$39 – $114
Oklahoma OK68$56−6%$21 – $119
Maryland MD34$54−9%$42 – $65
New Hampshire NH22$54−9%$19 – $209
Oregon OR40$51−14%$27 – $84
Arizona AZ36$51−15%$26 – $96
Tennessee TN73$51−15%$26 – $89
Mississippi MS54$49−19%$18 – $95
Indiana IN91$43−28%$29 – $123
Texas TX222$41−32%$28 – $207
Maine ME23$40−33%$20 – $106
Louisiana LA48$39−35%$27 – $70
North Carolina NC78$38−37%$25 – $90
Arkansas AR34$36−40%$22 – $82
West Virginia WV28$34−44%$21 – $88
New York NY99$30−50%$17 – $71
Florida FL136$26−56%$17 – $69
California CA111$24−60%$13 – $46
Michigan MI63$21−65%$12 – $55
New Jersey NJ55$19−68%$17 – $57
Delaware DE7not 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 $60.

Cash price by hospital segment. A segment needs at least 20 hospitals to show a figure.
SegmentHospitalsMedian20th–80th
Hospital type
Acute care2,091$52$23 – $109
Children’s46$53$30 – $121
Critical access780$81$40 – $132
Ownership
For-profit418$70$28 – $218
Government506$65$32 – $119
Non-profit1,993$57$25 – $107
System affiliation
Part of a system2,422$58$26 – $119
Independent505$66$32 – $127

Cash price vs list price

Median list price (chargemaster)$102
Median cash price$60
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

2,011 hospitals filed a usable inpatient cash price for this code. The median is $60 and the average of the middle 60% is $62; most fall between $28 and $110.

Cash price percentiles, inpatient, across 2,011 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
$19$32$60$97$165

The most expensive tenth of hospitals charges at least 8.5× what the cheapest tenth charges ($19 vs $165).

Of the 2,213 hospitals that filed this code inpatient, 2,011 gave a usable cash price; 106 carried a plausibility flag, 0 filed a number their own filing marks as not a price, 0 gave an estimate, and 96 a list price only.

How complete is this

2,927 of the 3,956 hospitals with a price file in our corpus (74%) filed a usable outpatient cash price for this code, and those are the hospitals every figure on this page is computed from.

What the 3,182 hospitals that filed this code at all gave us
Usable cash price — counted2,927
Cash price carrying a plausibility flag — shown on the compare tool, excluded here142
A number the filing itself marks as not a price (a placeholder, a ratio) — excluded3
An estimate rather than a filed cash price — excluded1
A list price only, no cash figure — excluded109
Hospitals that filed this code3,182

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 West Nile Igm Serum (Niles).

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, “Blood test for early-response West Nile virus antibodies (CPT 86788) — cash price report,” computed September 25, 2026. https://hospitalrates.com/procedures/cpt-86788-blood-test-for-early-response-west-nile-virus-antibodies