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Procedure price report · Laboratory - Chemistry and Hematology

Hexagonal phospholipid neutralization clotting test

CPT 85598the billing code this page is about

A follow-up clotting test using hexagonal-phase phospholipid to confirm whether a prolonged clotting time is caused by a lupus anticoagulant.

Hospitals typically charge $77 cash for this outpatient procedure — the median across 2,470 hospitals that filed a usable cash price; the average of the middle 60% is $79. Most fall between $33 and $151 (20th–80th percentile).

Hospitals
2,470
States
50
Filings dated
Nov 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 2,470 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
$21$38$77$130$223

The most expensive tenth of hospitals charges at least 11× what the cheapest tenth charges ($21 vs $223).

How the prices are spread

$17 – $23: 163 hospitals$17$23 – $30: 111 hospitals$30 – $40: 249 hospitals$30$40 – $53: 219 hospitals$53 – $70: 253 hospitals$53$70 – $93: 385 hospitals$93 – $123: 311 hospitals$93$123 – $163: 222 hospitals$163 – $217: 176 hospitals$163$217 – $288: 135 hospitals$217median $77price bands are equal on a log scale
Hospitals per price band (2,224 of 2,470 — the bands cover the 5th to 95th percentile)
FromToHospitals
$17$23163
$23$30111
$30$40249
$40$53219
$53$70253
$70$93385
$93$123311
$123$163222
$163$217176
$217$288135

By state

The median cash price in each state, against the national median of $77.

Alaska: median $49 across 12 hospitalsAK$49Maine: median $37 across 17 hospitalsME$37Vermont: median $228 across 10 hospitalsVT$228New Hampshire: median $86 across 18 hospitalsNH$86Washington: median $87 across 66 hospitalsWA$87Idaho: median $90 across 18 hospitalsID$90Montana: median $74 across 16 hospitalsMT$74North Dakota: median $86 across 22 hospitalsND$86Minnesota: median $83 across 78 hospitalsMN$83Illinois: median $105 across 102 hospitalsIL$105Wisconsin: median $93 across 81 hospitalsWI$93Michigan: median $36 across 63 hospitalsMI$36New York: median $40 across 92 hospitalsNY$40Massachusetts: median $68 across 37 hospitalsMA$68Oregon: median $66 across 35 hospitalsOR$66Nevada: median $55 across 16 hospitalsNV$55Wyoming: median $129 across 12 hospitalsWY$129South Dakota: median $126 across 24 hospitalsSD$126Iowa: median $72 across 57 hospitalsIA$72Indiana: median $53 across 88 hospitalsIN$53Ohio: median $81 across 120 hospitalsOH$81Pennsylvania: median $74 across 107 hospitalsPA$74New Jersey: median $20 across 51 hospitalsNJ$20Connecticut: median $77 across 12 hospitalsCT$77Rhode Island: 6 hospitals filed a usable price — fewer than 10, so no figureRICalifornia: median $42 across 86 hospitalsCA$42Utah: median $104 across 36 hospitalsUT$104Colorado: median $91 across 55 hospitalsCO$91Nebraska: median $150 across 52 hospitalsNE$150Missouri: median $75 across 56 hospitalsMO$75Kentucky: median $85 across 58 hospitalsKY$85West Virginia: median $71 across 27 hospitalsWV$71Virginia: median $61 across 70 hospitalsVA$61Maryland: median $136 across 36 hospitalsMD$136Delaware: 6 hospitals filed a usable price — fewer than 10, so no figureDEArizona: median $87 across 33 hospitalsAZ$87New Mexico: median $87 across 12 hospitalsNM$87Kansas: median $143 across 47 hospitalsKS$143Arkansas: median $102 across 18 hospitalsAR$102Tennessee: median $44 across 62 hospitalsTN$44North Carolina: median $79 across 74 hospitalsNC$79South Carolina: median $116 across 49 hospitalsSC$116Oklahoma: median $75 across 37 hospitalsOK$75Louisiana: median $39 across 43 hospitalsLA$39Mississippi: median $30 across 33 hospitalsMS$30Alabama: median $43 across 28 hospitalsAL$43Georgia: median $83 across 78 hospitalsGA$83Hawaii: median $91 across 12 hospitalsHI$91Texas: median $80 across 180 hospitalsTX$80Florida: median $37 across 122 hospitalsFL$37
Cash price by state, most expensive first. National median $77. A state needs at least 10 hospitals with a usable price to show a figure.
StateHospitalsMedianvs national20th–80th
Vermont VT10$228+198%$158 – $256
Nebraska NE52$150+96%$55 – $247
Kansas KS47$143+87%$80 – $203
Maryland MD36$136+78%$100 – $160
Wyoming WY12$129+69%$45 – $181
South Dakota SD24$126+65%$73 – $303
South Carolina SC49$116+52%$37 – $186
Illinois IL102$105+37%$58 – $221
Utah UT36$104+36%$100 – $138
Arkansas AR18$102+33%$60 – $149
Wisconsin WI81$93+22%$76 – $118
Colorado CO55$91+19%$56 – $138
Hawaii HI12$91+18%$47 – $238
Idaho ID18$90+18%$50 – $160
Arizona AZ33$87+14%$26 – $256
New Mexico NM12$87+13%$53 – $160
Washington WA66$87+13%$47 – $127
New Hampshire NH18$86+12%$73 – $111
North Dakota ND22$86+12%$31 – $126
Kentucky KY58$85+11%$39 – $225
Minnesota MN78$83+9%$58 – $164
Georgia GA78$83+8%$36 – $105
Ohio OH120$81+5%$56 – $155
Texas TX180$80+4%$53 – $216
North Carolina NC74$79+3%$25 – $114
Connecticut CT12$77+1%$32 – $100
Missouri MO56$75−2%$49 – $111
Oklahoma OK37$75−3%$42 – $170
Montana MT16$74−3%$50 – $392
Pennsylvania PA107$74−4%$21 – $200
Iowa IA57$72−6%$33 – $185
West Virginia WV27$71−7%$40 – $161
Massachusetts MA37$68−12%$42 – $98
Oregon OR35$66−14%$55 – $87
Virginia VA70$61−21%$22 – $116
Nevada NV16$55−28%$34 – $143
Indiana IN88$53−30%$33 – $122
Alaska AK12$49−36%$24 – $234
Tennessee TN62$44−43%$32 – $75
Alabama AL28$43−43%$15 – $137
California CA86$42−45%$12 – $119
New York NY92$40−48%$23 – $136
Louisiana LA43$39−49%$22 – $101
Maine ME17$37−51%$26 – $67
Florida FL122$37−52%$23 – $89
Michigan MI63$36−53%$25 – $81
Mississippi MS33$30−60%$15 – $49
New Jersey NJ51$20−74%$18 – $62
Delaware DE6not enough hospitals filed a usable price
Rhode Island RI6not 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 $77.

Cash price by hospital segment. A segment needs at least 20 hospitals to show a figure.
SegmentHospitalsMedian20th–80th
Hospital type
Acute care1,839$71$32 – $143
Children’s31$138$48 – $217
Critical access591$91$45 – $175
Ownership
For-profit329$78$35 – $213
Government409$77$36 – $143
Non-profit1,723$76$33 – $146
System affiliation
Part of a system2,056$76$33 – $151
Independent414$78$38 – $154

Cash price vs list price

Median list price (chargemaster)$132
Median cash price$77
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

1,734 hospitals filed a usable inpatient cash price for this code. The median is $77 and the average of the middle 60% is $80; most fall between $35 and $147.

Cash price percentiles, inpatient, across 1,734 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
$23$42$77$126$205

The most expensive tenth of hospitals charges at least 8.9× what the cheapest tenth charges ($23 vs $205).

Of the 1,911 hospitals that filed this code inpatient, 1,734 gave a usable cash price; 101 carried a plausibility flag, 0 filed a number their own filing marks as not a price, 0 gave an estimate, and 76 a list price only.

How complete is this

2,470 of the 3,956 hospitals with a price file in our corpus (62%) filed a usable outpatient cash price for this code, and those are the hospitals every figure on this page is computed from.

What the 2,695 hospitals that filed this code at all gave us
Usable cash price — counted2,470
Cash price carrying a plausibility flag — shown on the compare tool, excluded here132
A number the filing itself marks as not a price (a placeholder, a ratio) — excluded2
An estimate rather than a filed cash price — excluded2
A list price only, no cash figure — excluded89
Hospitals that filed this code2,695

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 Laboratory - Chemistry and Hematology family.

Hospitals file this code under descriptions such as HC Phospholipid Neutralization Hexagonal.

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, “Hexagonal phospholipid neutralization clotting test (CPT 85598) — cash price report,” computed September 25, 2026. https://hospitalrates.com/procedures/cpt-85598-hexagonal-phospholipid-neutralization-clotting-test