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

Entamoeba histolytica antigen test in stool

CPT 87337the billing code this page is about

Laboratory test that detects antigen specific to Entamoeba histolytica in a stool or other specimen using an enzyme immunoassay.

Hospitals typically charge $54 cash for this outpatient procedure — the median across 1,228 hospitals that filed a usable cash price; the average of the middle 60% is $57. Most fall between $24 and $113 (20th–80th percentile).

Hospitals
1,228
States
49
Filings dated
Nov 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 1,228 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$29$54$101$174

The most expensive tenth of hospitals charges at least 12× what the cheapest tenth charges ($14 vs $174).

How the prices are spread

$12 – $16: 87 hospitals$12$16 – $22: 71 hospitals$22 – $31: 108 hospitals$22$31 – $42: 175 hospitals$42 – $57: 164 hospitals$42$57 – $78: 181 hospitals$78 – $107: 112 hospitals$78$107 – $146: 113 hospitals$146 – $199: 72 hospitals$146$199 – $272: 29 hospitals$199median $54price bands are equal on a log scale
Hospitals per price band (1,112 of 1,228 — the bands cover the 5th to 95th percentile)
FromToHospitals
$12$1687
$16$2271
$22$31108
$31$42175
$42$57164
$57$78181
$78$107112
$107$146113
$146$19972
$199$27229

By state

The median cash price in each state, against the national median of $54.

Alaska: 7 hospitals filed a usable price — fewer than 10, so no figureAKMaine: 5 hospitals filed a usable price — fewer than 10, so no figureMEVermont: 3 hospitals filed a usable price — fewer than 10, so no figureVTNew Hampshire: 9 hospitals filed a usable price — fewer than 10, so no figureNHWashington: median $38 across 33 hospitalsWA$38Idaho: 4 hospitals filed a usable price — fewer than 10, so no figureIDMontana: 1 hospital filed a usable price — fewer than 10, so no figureMTNorth Dakota: no hospital in the corpus filed a usable priceNDMinnesota: 4 hospitals filed a usable price — fewer than 10, so no figureMNIllinois: median $59 across 46 hospitalsIL$59Wisconsin: median $35 across 25 hospitalsWI$35Michigan: median $22 across 20 hospitalsMI$22New York: median $32 across 60 hospitalsNY$32Massachusetts: median $66 across 33 hospitalsMA$66Oregon: median $40 across 13 hospitalsOR$40Nevada: median $59 across 11 hospitalsNV$59Wyoming: 5 hospitals filed a usable price — fewer than 10, so no figureWYSouth Dakota: 1 hospital filed a usable price — fewer than 10, so no figureSDIowa: median $39 across 21 hospitalsIA$39Indiana: median $54 across 43 hospitalsIN$54Ohio: median $54 across 97 hospitalsOH$54Pennsylvania: median $42 across 73 hospitalsPA$42New Jersey: median $13 across 34 hospitalsNJ$13Connecticut: median $54 across 10 hospitalsCT$54Rhode Island: 3 hospitals filed a usable price — fewer than 10, so no figureRICalifornia: median $34 across 80 hospitalsCA$34Utah: median $83 across 32 hospitalsUT$83Colorado: median $110 across 19 hospitalsCO$110Nebraska: 6 hospitals filed a usable price — fewer than 10, so no figureNEMissouri: median $142 across 23 hospitalsMO$142Kentucky: median $39 across 33 hospitalsKY$39West Virginia: 9 hospitals filed a usable price — fewer than 10, so no figureWVVirginia: median $33 across 27 hospitalsVA$33Maryland: median $109 across 15 hospitalsMD$109Delaware: 5 hospitals filed a usable price — fewer than 10, so no figureDEArizona: median $38 across 13 hospitalsAZ$38New Mexico: median $36 across 12 hospitalsNM$36Kansas: median $103 across 20 hospitalsKS$103Arkansas: 7 hospitals filed a usable price — fewer than 10, so no figureARTennessee: median $31 across 12 hospitalsTN$31North Carolina: median $67 across 29 hospitalsNC$67South Carolina: median $68 across 15 hospitalsSC$68Oklahoma: median $62 across 22 hospitalsOK$62Louisiana: median $28 across 19 hospitalsLA$28Mississippi: median $39 across 16 hospitalsMS$39Alabama: 5 hospitals filed a usable price — fewer than 10, so no figureALGeorgia: median $74 across 31 hospitalsGA$74Hawaii: 5 hospitals filed a usable price — fewer than 10, so no figureHITexas: median $64 across 140 hospitalsTX$64Florida: median $48 across 72 hospitalsFL$48
Cash price by state, most expensive first. National median $54. A state needs at least 10 hospitals with a usable price to show a figure.
StateHospitalsMedianvs national20th–80th
Missouri MO23$142+162%$59 – $352
Colorado CO19$110+103%$46 – $411
Maryland MD15$109+101%$65 – $125
Kansas KS20$103+90%$35 – $218
Utah UT32$83+53%$83 – $97
Georgia GA31$74+37%$58 – $115
South Carolina SC15$68+27%$31 – $68
North Carolina NC29$67+24%$31 – $170
Massachusetts MA33$66+22%$29 – $144
Texas TX140$64+18%$18 – $147
Oklahoma OK22$62+16%$21 – $220
Illinois IL46$59+10%$19 – $105
Nevada NV11$59+9%$30 – $70
Connecticut CT10$540%$20 – $73
Ohio OH97$540%$38 – $144
Indiana IN43$54−1%$23 – $119
Florida FL72$48−11%$34 – $105
Pennsylvania PA73$42−22%$14 – $124
Oregon OR13$40−26%$40 – $53
Mississippi MS16$39−27%$25 – $69
Kentucky KY33$39−28%$32 – $145
Iowa IA21$39−28%$39 – $53
Washington WA33$38−30%$24 – $60
Arizona AZ13$38−30%$14 – $119
New Mexico NM12$36−33%$34 – $78
Wisconsin WI25$35−35%$35 – $66
California CA80$34−38%$23 – $75
Virginia VA27$33−39%$25 – $101
New York NY60$32−41%$12 – $64
Tennessee TN12$31−43%$21 – $38
Louisiana LA19$28−48%$15 – $48
Michigan MI20$22−59%$16 – $22
New Jersey NJ34$13−76%$12 – $109
New Hampshire NH9not enough hospitals filed a usable price
West Virginia WV9not enough hospitals filed a usable price
Alaska AK7not enough hospitals filed a usable price
Arkansas AR7not enough hospitals filed a usable price
Nebraska NE6not enough hospitals filed a usable price
Alabama AL5not enough hospitals filed a usable price
Delaware DE5not enough hospitals filed a usable price
Hawaii HI5not enough hospitals filed a usable price
Maine ME5not enough hospitals filed a usable price
Wyoming WY5not enough hospitals filed a usable price
Idaho ID4not enough hospitals filed a usable price
Minnesota MN4not enough hospitals filed a usable price
Rhode Island RI3not enough hospitals filed a usable price
Vermont VT3not enough hospitals filed a usable price
Montana MT1not enough hospitals filed a usable price
South Dakota SD1not 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 $54.

Cash price by hospital segment. A segment needs at least 20 hospitals to show a figure.
SegmentHospitalsMedian20th–80th
Hospital type
Acute care1,038$53$23 – $111
Children’s22$56$25 – $129
Critical access163$62$33 – $126
Ownership
For-profit172$58$27 – $220
Government135$52$21 – $105
Non-profit916$54$25 – $110
System affiliation
Part of a system1,060$54$24 – $111
Independent168$49$25 – $127

Cash price vs list price

Median list price (chargemaster)$91
Median cash price$54
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

876 hospitals filed a usable inpatient cash price for this code. The median is $54 and the average of the middle 60% is $59; most fall between $26 and $111.

Cash price percentiles, inpatient, across 876 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$54$97$165

The most expensive tenth of hospitals charges at least 8.9× what the cheapest tenth charges ($19 vs $165).

Of the 966 hospitals that filed this code inpatient, 876 gave a usable cash price; 49 carried a plausibility flag, 0 filed a number their own filing marks as not a price, 0 gave an estimate, and 41 a list price only.

How complete is this

1,228 of the 3,956 hospitals with a price file in our corpus (31%) filed a usable outpatient cash price for this code, and those are the hospitals every figure on this page is computed from.

What the 1,334 hospitals that filed this code at all gave us
Usable cash price — counted1,228
Cash price carrying a plausibility flag — shown on the compare tool, excluded here67
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 — excluded38
Hospitals that filed this code1,334

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 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 ENTAMOEB HIST GROUP AG IA.

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, “Entamoeba histolytica antigen test in stool (CPT 87337) — cash price report,” computed September 25, 2026. https://hospitalrates.com/procedures/cpt-87337-entamoeba-histolytica-antigen-test-in-stool