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Procedure price report · Laboratory - Chemistry and Hematology

Silica level test

CPT 84285the billing code this page is about

Measures the amount of silica in a specimen.

Hospitals typically charge $75 cash for this outpatient procedure — the median across 336 hospitals that filed a usable cash price; the average of the middle 60% is $88. Most fall between $29 and $194 (20th–80th percentile).

Hospitals
336
States
43
Filings dated
Jun 2024 – 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 336 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
$25$32$75$178$245

The most expensive tenth of hospitals charges at least 9.7× what the cheapest tenth charges ($25 vs $245).

How the prices are spread

$25 – $33: 68 hospitals$25$33 – $43: 26 hospitals$43 – $56: 39 hospitals$43$56 – $74: 18 hospitals$74 – $96: 24 hospitals$74$96 – $126: 24 hospitals$126 – $166: 31 hospitals$126$166 – $217: 29 hospitals$217 – $284: 35 hospitals$217$284 – $372: 14 hospitals$284median $75price bands are equal on a log scale
Hospitals per price band (308 of 336 — the bands cover the 5th to 95th percentile)
FromToHospitals
$25$3368
$33$4326
$43$5639
$56$7418
$74$9624
$96$12624
$126$16631
$166$21729
$217$28435
$284$37214

By state

The median cash price in each state, against the national median of $75.

Alaska: no hospital in the corpus filed a usable priceAKMaine: 8 hospitals filed a usable price — fewer than 10, so no figureMEVermont: 2 hospitals filed a usable price — fewer than 10, so no figureVTNew Hampshire: 3 hospitals filed a usable price — fewer than 10, so no figureNHWashington: 3 hospitals filed a usable price — fewer than 10, so no figureWAIdaho: no hospital in the corpus filed a usable priceIDMontana: 2 hospitals filed a usable price — fewer than 10, so no figureMTNorth Dakota: 8 hospitals filed a usable price — fewer than 10, so no figureNDMinnesota: 1 hospital filed a usable price — fewer than 10, so no figureMNIllinois: median $142 across 26 hospitalsIL$142Wisconsin: 2 hospitals filed a usable price — fewer than 10, so no figureWIMichigan: median $35 across 10 hospitalsMI$35New York: median $25 across 21 hospitalsNY$25Massachusetts: median $86 across 10 hospitalsMA$86Oregon: 7 hospitals filed a usable price — fewer than 10, so no figureORNevada: 2 hospitals filed a usable price — fewer than 10, so no figureNVWyoming: 1 hospital filed a usable price — fewer than 10, so no figureWYSouth Dakota: no hospital in the corpus filed a usable priceSDIowa: median $32 across 12 hospitalsIA$32Indiana: median $38 across 12 hospitalsIN$38Ohio: median $300 across 25 hospitalsOH$300Pennsylvania: median $29 across 32 hospitalsPA$29New Jersey: median $28 across 23 hospitalsNJ$28Connecticut: 4 hospitals filed a usable price — fewer than 10, so no figureCTRhode Island: 2 hospitals filed a usable price — fewer than 10, so no figureRICalifornia: median $239 across 34 hospitalsCA$239Utah: 1 hospital filed a usable price — fewer than 10, so no figureUTColorado: no hospital in the corpus filed a usable priceCONebraska: no hospital in the corpus filed a usable priceNEMissouri: 1 hospital filed a usable price — fewer than 10, so no figureMOKentucky: 5 hospitals filed a usable price — fewer than 10, so no figureKYWest Virginia: 1 hospital filed a usable price — fewer than 10, so no figureWVVirginia: 5 hospitals filed a usable price — fewer than 10, so no figureVAMaryland: 1 hospital filed a usable price — fewer than 10, so no figureMDDelaware: 1 hospital filed a usable price — fewer than 10, so no figureDEArizona: 3 hospitals filed a usable price — fewer than 10, so no figureAZNew Mexico: no hospital in the corpus filed a usable priceNMKansas: 5 hospitals filed a usable price — fewer than 10, so no figureKSArkansas: 2 hospitals filed a usable price — fewer than 10, so no figureARTennessee: 5 hospitals filed a usable price — fewer than 10, so no figureTNNorth Carolina: no hospital in the corpus filed a usable priceNCSouth Carolina: 3 hospitals filed a usable price — fewer than 10, so no figureSCOklahoma: median $45 across 13 hospitalsOK$45Louisiana: 4 hospitals filed a usable price — fewer than 10, so no figureLAMississippi: 7 hospitals filed a usable price — fewer than 10, so no figureMSAlabama: 5 hospitals filed a usable price — fewer than 10, so no figureALGeorgia: 2 hospitals filed a usable price — fewer than 10, so no figureGAHawaii: 3 hospitals filed a usable price — fewer than 10, so no figureHITexas: 6 hospitals filed a usable price — fewer than 10, so no figureTXFlorida: median $51 across 13 hospitalsFL$51
Cash price by state, most expensive first. National median $75. A state needs at least 10 hospitals with a usable price to show a figure.
StateHospitalsMedianvs national20th–80th
Ohio OH25$300+301%$113 – $372
California CA34$239+219%$191 – $239
Illinois IL26$142+90%$41 – $144
Massachusetts MA10$86+15%$76 – $119
Florida FL13$51−32%$51 – $114
Oklahoma OK13$45−40%$45 – $54
Indiana IN12$38−49%$34 – $52
Michigan MI10$35−54%$33 – $83
Iowa IA12$32−57%$32 – $32
Pennsylvania PA32$29−61%$18 – $178
New Jersey NJ23$28−63%$25 – $28
New York NY21$25−66%$25 – $57
Maine ME8not enough hospitals filed a usable price
North Dakota ND8not enough hospitals filed a usable price
Mississippi MS7not enough hospitals filed a usable price
Oregon OR7not enough hospitals filed a usable price
Texas TX6not enough hospitals filed a usable price
Alabama AL5not enough hospitals filed a usable price
Kansas KS5not enough hospitals filed a usable price
Kentucky KY5not enough hospitals filed a usable price
Tennessee TN5not enough hospitals filed a usable price
Virginia VA5not enough hospitals filed a usable price
Connecticut CT4not enough hospitals filed a usable price
Louisiana LA4not enough hospitals filed a usable price
Arizona AZ3not enough hospitals filed a usable price
Hawaii HI3not enough hospitals filed a usable price
New Hampshire NH3not enough hospitals filed a usable price
South Carolina SC3not enough hospitals filed a usable price
Washington WA3not enough hospitals filed a usable price
Arkansas AR2not enough hospitals filed a usable price
Georgia GA2not enough hospitals filed a usable price
Montana MT2not enough hospitals filed a usable price
Nevada NV2not enough hospitals filed a usable price
Rhode Island RI2not enough hospitals filed a usable price
Vermont VT2not enough hospitals filed a usable price
Wisconsin WI2not enough hospitals filed a usable price
Delaware DE1not enough hospitals filed a usable price
Maryland MD1not enough hospitals filed a usable price
Minnesota MN1not enough hospitals filed a usable price
Missouri MO1not enough hospitals filed a usable price
Utah UT1not enough hospitals filed a usable price
West Virginia WV1not enough hospitals filed a usable price
Wyoming WY1not 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 $75.

Cash price by hospital segment. A segment needs at least 20 hospitals to show a figure.
SegmentHospitalsMedian20th–80th
Hospital type
Acute care279$71$28 – $191
Children’s4fewer than 20 hospitals
Critical access51$85$44 – $244
Ownership
For-profit25$45$19 – $76
Government29$45$25 – $104
Non-profit280$82$32 – $206
System affiliation
Part of a system296$76$29 – $199
Independent40$71$31 – $123

Cash price vs list price

Median list price (chargemaster)$170
Median cash price$75
Cash as a share of list, median hospital58%

At the typical hospital, asking for the cash price cuts the list price by about 42%. 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

195 hospitals filed a usable inpatient cash price for this code. The median is $114 and the average of the middle 60% is $136; most fall between $45 and $239.

Cash price percentiles, inpatient, across 195 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
$32$45$114$236$286

The most expensive tenth of hospitals charges at least 8.9× what the cheapest tenth charges ($32 vs $286).

Of the 213 hospitals that filed this code inpatient, 195 gave a usable cash price; 17 carried a plausibility flag, 0 filed a number their own filing marks as not a price, 0 gave an estimate, and 1 a list price only.

How complete is this

336 of the 3,956 hospitals with a price file in our corpus (8%) filed a usable outpatient cash price for this code, and those are the hospitals every figure on this page is computed from.

What the 366 hospitals that filed this code at all gave us
Usable cash price — counted336
Cash price carrying a plausibility flag — shown on the compare tool, excluded here29
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 — excluded0
Hospitals that filed this code366

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 Laboratory - Chemistry and Hematology family.

Hospitals file this code under descriptions such as ASSAY OF SILICA.

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, “Silica level test (CPT 84285) — cash price report,” computed September 25, 2026. https://hospitalrates.com/procedures/cpt-84285-silica-level-test