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Procedure price report · Laboratory - Chemistry and Hematology

Thyroxine (T4) test needing sample extraction

CPT 84437the billing code this page is about

Measurement of the thyroid hormone thyroxine in a specimen that must first be eluted, such as a dried blood spot from newborn screening.

Hospitals typically charge $20 cash for this outpatient procedure — the median across 627 hospitals that filed a usable cash price; the average of the middle 60% is $21. Most fall between $9 and $43 (20th–80th percentile).

Hospitals
627
States
45
Filings dated
Jan 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 627 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
$6$10$20$35$66

The most expensive tenth of hospitals charges at least 10× what the cheapest tenth charges ($6 vs $66).

How the prices are spread

$5 – $7: 72 hospitals$5$7 – $10: 49 hospitals$10 – $13: 54 hospitals$10$13 – $18: 82 hospitals$18 – $24: 86 hospitals$18$24 – $32: 70 hospitals$32 – $43: 57 hospitals$32$43 – $58: 45 hospitals$58 – $78: 35 hospitals$58$78 – $105: 15 hospitals$78median $20price bands are equal on a log scale
Hospitals per price band (565 of 627 — the bands cover the 5th to 95th percentile)
FromToHospitals
$5$772
$7$1049
$10$1354
$13$1882
$18$2486
$24$3270
$32$4357
$43$5845
$58$7835
$78$10515

By state

The median cash price in each state, against the national median of $20.

Alaska: 1 hospital filed a usable price — fewer than 10, so no figureAKMaine: no hospital in the corpus filed a usable priceMEVermont: 2 hospitals filed a usable price — fewer than 10, so no figureVTNew Hampshire: 1 hospital filed a usable price — fewer than 10, so no figureNHWashington: median $24 across 10 hospitalsWA$24Idaho: 1 hospital filed a usable price — fewer than 10, so no figureIDMontana: median $30 across 20 hospitalsMT$30North Dakota: 1 hospital filed a usable price — fewer than 10, so no figureNDMinnesota: no hospital in the corpus filed a usable priceMNIllinois: median $35 across 20 hospitalsIL$35Wisconsin: no hospital in the corpus filed a usable priceWIMichigan: 7 hospitals filed a usable price — fewer than 10, so no figureMINew York: median $6 across 15 hospitalsNY$6Massachusetts: 6 hospitals filed a usable price — fewer than 10, so no figureMAOregon: 1 hospital filed a usable price — fewer than 10, so no figureORNevada: 2 hospitals filed a usable price — fewer than 10, so no figureNVWyoming: 8 hospitals filed a usable price — fewer than 10, so no figureWYSouth Dakota: 2 hospitals filed a usable price — fewer than 10, so no figureSDIowa: median $55 across 20 hospitalsIA$55Indiana: median $16 across 49 hospitalsIN$16Ohio: 5 hospitals filed a usable price — fewer than 10, so no figureOHPennsylvania: median $5 across 18 hospitalsPA$5New Jersey: median $7 across 25 hospitalsNJ$7Connecticut: no hospital in the corpus filed a usable priceCTRhode Island: 1 hospital filed a usable price — fewer than 10, so no figureRICalifornia: median $66 across 35 hospitalsCA$66Utah: median $27 across 33 hospitalsUT$27Colorado: median $20 across 46 hospitalsCO$20Nebraska: median $30 across 54 hospitalsNE$30Missouri: median $11 across 13 hospitalsMO$11Kentucky: median $27 across 28 hospitalsKY$27West Virginia: median $9 across 24 hospitalsWV$9Virginia: 9 hospitals filed a usable price — fewer than 10, so no figureVAMaryland: 4 hospitals filed a usable price — fewer than 10, so no figureMDDelaware: 1 hospital filed a usable price — fewer than 10, so no figureDEArizona: 1 hospital filed a usable price — fewer than 10, so no figureAZNew Mexico: 1 hospital filed a usable price — fewer than 10, so no figureNMKansas: 2 hospitals filed a usable price — fewer than 10, so no figureKSArkansas: median $16 across 22 hospitalsAR$16Tennessee: 3 hospitals filed a usable price — fewer than 10, so no figureTNNorth Carolina: no hospital in the corpus filed a usable priceNCSouth Carolina: median $26 across 10 hospitalsSC$26Oklahoma: median $13 across 32 hospitalsOK$13Louisiana: 7 hospitals filed a usable price — fewer than 10, so no figureLAMississippi: median $22 across 17 hospitalsMS$22Alabama: 8 hospitals filed a usable price — fewer than 10, so no figureALGeorgia: 1 hospital filed a usable price — fewer than 10, so no figureGAHawaii: 5 hospitals filed a usable price — fewer than 10, so no figureHITexas: median $17 across 41 hospitalsTX$17Florida: median $35 across 15 hospitalsFL$35
Cash price by state, most expensive first. National median $20. A state needs at least 10 hospitals with a usable price to show a figure.
StateHospitalsMedianvs national20th–80th
California CA35$66+230%$53 – $66
Iowa IA20$55+175%$17 – $55
Florida FL15$35+75%$21 – $179
Illinois IL20$35+73%$9 – $55
Nebraska NE54$30+50%$15 – $47
Montana MT20$30+49%$19 – $39
Utah UT33$27+37%$23 – $32
Kentucky KY28$27+37%$7 – $38
South Carolina SC10$26+28%$13 – $26
Washington WA10$24+18%$16 – $24
Mississippi MS17$22+10%$15 – $27
Colorado CO46$20−1%$7 – $54
Texas TX41$17−16%$13 – $78
Indiana IN49$16−20%$10 – $24
Arkansas AR22$16−22%$7 – $17
Oklahoma OK32$13−35%$12 – $19
Missouri MO13$11−47%$7 – $21
West Virginia WV24$9−57%$8 – $23
New Jersey NJ25$7−64%$6 – $7
New York NY15$6−68%$6 – $7
Pennsylvania PA18$5−73%$4 – $7
Virginia VA9not enough hospitals filed a usable price
Alabama AL8not enough hospitals filed a usable price
Wyoming WY8not enough hospitals filed a usable price
Louisiana LA7not enough hospitals filed a usable price
Michigan MI7not enough hospitals filed a usable price
Massachusetts MA6not enough hospitals filed a usable price
Hawaii HI5not enough hospitals filed a usable price
Ohio OH5not enough hospitals filed a usable price
Maryland MD4not enough hospitals filed a usable price
Tennessee TN3not enough hospitals filed a usable price
Kansas KS2not enough hospitals filed a usable price
Nevada NV2not enough hospitals filed a usable price
South Dakota SD2not enough hospitals filed a usable price
Vermont VT2not enough hospitals filed a usable price
Alaska AK1not enough hospitals filed a usable price
Arizona AZ1not enough hospitals filed a usable price
Delaware DE1not enough hospitals filed a usable price
Georgia GA1not enough hospitals filed a usable price
Idaho ID1not enough hospitals filed a usable price
North Dakota ND1not enough hospitals filed a usable price
New Hampshire NH1not enough hospitals filed a usable price
New Mexico NM1not enough hospitals filed a usable price
Oregon OR1not enough hospitals filed a usable price
Rhode Island RI1not 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 $20.

Cash price by hospital segment. A segment needs at least 20 hospitals to show a figure.
SegmentHospitalsMedian20th–80th
Hospital type
Acute care480$19$7 – $46
Children’s9fewer than 20 hospitals
Critical access135$26$13 – $42
Ownership
For-profit84$22$11 – $160
Government89$21$10 – $40
Non-profit451$19$8 – $38
System affiliation
Part of a system531$20$9 – $47
Independent96$20$8 – $36

Cash price vs list price

Median list price (chargemaster)$39
Median cash price$20
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

352 hospitals filed a usable inpatient cash price for this code. The median is $23 and the average of the middle 60% is $26; most fall between $12 and $53.

Cash price percentiles, inpatient, across 352 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
$8$13$23$38$66

The most expensive tenth of hospitals charges at least 8.0× what the cheapest tenth charges ($8 vs $66).

Of the 387 hospitals that filed this code inpatient, 352 gave a usable cash price; 4 carried a plausibility flag, 0 filed a number their own filing marks as not a price, 0 gave an estimate, and 31 a list price only.

How complete is this

627 of the 3,956 hospitals with a price file in our corpus (16%) filed a usable outpatient cash price for this code, and those are the hospitals every figure on this page is computed from.

What the 676 hospitals that filed this code at all gave us
Usable cash price — counted627
Cash price carrying a plausibility flag — shown on the compare tool, excluded here11
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 — excluded37
Hospitals that filed this code676

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 Thyroxine (thyroid chemical), requiring elution.

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, “Thyroxine (T4) test needing sample extraction (CPT 84437) — cash price report,” computed September 25, 2026. https://hospitalrates.com/procedures/cpt-84437-thyroxine-t4-test-needing-sample-extraction