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Procedure price report · Laboratory - Chemistry and Hematology

Activated clotting time test

CPT 85347the billing code this page is about

A test that times how long blood takes to clot after a clot-triggering substance is added, often used while a patient is on heparin. Billed once per test.

Hospitals typically charge $37 cash for this outpatient procedure — the median across 2,277 hospitals that filed a usable cash price; the average of the middle 60% is $41. Most fall between $13 and $90 (20th–80th percentile).

Hospitals
2,277
States
50
Filings dated
Dec 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 2,277 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
$7$18$37$75$145

The most expensive tenth of hospitals charges at least 20× what the cheapest tenth charges ($7 vs $145).

How the prices are spread

$5 – $7: 103 hospitals$5$7 – $11: 138 hospitals$11 – $16: 182 hospitals$11$16 – $24: 237 hospitals$24 – $35: 311 hospitals$24$35 – $52: 373 hospitals$52 – $77: 270 hospitals$52$77 – $114: 233 hospitals$114 – $169: 134 hospitals$114$169 – $251: 70 hospitals$169median $37price bands are equal on a log scale
Hospitals per price band (2,051 of 2,277 — the bands cover the 5th to 95th percentile)
FromToHospitals
$5$7103
$7$11138
$11$16182
$16$24237
$24$35311
$35$52373
$52$77270
$77$114233
$114$169134
$169$25170

By state

The median cash price in each state, against the national median of $37.

Alaska: 9 hospitals filed a usable price — fewer than 10, so no figureAKMaine: 7 hospitals filed a usable price — fewer than 10, so no figureMEVermont: 1 hospital filed a usable price — fewer than 10, so no figureVTNew Hampshire: 8 hospitals filed a usable price — fewer than 10, so no figureNHWashington: median $41 across 42 hospitalsWA$41Idaho: median $19 across 14 hospitalsID$19Montana: 7 hospitals filed a usable price — fewer than 10, so no figureMTNorth Dakota: 6 hospitals filed a usable price — fewer than 10, so no figureNDMinnesota: median $31 across 46 hospitalsMN$31Illinois: median $45 across 92 hospitalsIL$45Wisconsin: median $36 across 88 hospitalsWI$36Michigan: median $32 across 81 hospitalsMI$32New York: median $13 across 86 hospitalsNY$13Massachusetts: median $26 across 32 hospitalsMA$26Oregon: median $28 across 31 hospitalsOR$28Nevada: median $29 across 13 hospitalsNV$29Wyoming: 5 hospitals filed a usable price — fewer than 10, so no figureWYSouth Dakota: 6 hospitals filed a usable price — fewer than 10, so no figureSDIowa: median $50 across 31 hospitalsIA$50Indiana: median $27 across 69 hospitalsIN$27Ohio: median $30 across 120 hospitalsOH$30Pennsylvania: median $18 across 104 hospitalsPA$18New Jersey: median $5 across 54 hospitalsNJ$5Connecticut: median $27 across 17 hospitalsCT$27Rhode Island: median $20 across 10 hospitalsRI$20California: median $66 across 135 hospitalsCA$66Utah: median $46 across 33 hospitalsUT$46Colorado: median $57 across 43 hospitalsCO$57Nebraska: median $61 across 21 hospitalsNE$61Missouri: median $37 across 56 hospitalsMO$37Kentucky: median $46 across 46 hospitalsKY$46West Virginia: median $30 across 18 hospitalsWV$30Virginia: median $29 across 62 hospitalsVA$29Maryland: median $40 across 30 hospitalsMD$40Delaware: 6 hospitals filed a usable price — fewer than 10, so no figureDEArizona: median $73 across 31 hospitalsAZ$73New Mexico: median $36 across 15 hospitalsNM$36Kansas: median $34 across 27 hospitalsKS$34Arkansas: median $22 across 23 hospitalsAR$22Tennessee: median $16 across 60 hospitalsTN$16North Carolina: median $39 across 75 hospitalsNC$39South Carolina: median $65 across 47 hospitalsSC$65Oklahoma: median $28 across 42 hospitalsOK$28Louisiana: median $17 across 43 hospitalsLA$17Mississippi: median $25 across 33 hospitalsMS$25Alabama: median $33 across 35 hospitalsAL$33Georgia: median $37 across 75 hospitalsGA$37Hawaii: median $22 across 14 hospitalsHI$22Texas: median $83 across 190 hospitalsTX$83Florida: median $42 across 138 hospitalsFL$42
Cash price by state, most expensive first. National median $37. A state needs at least 10 hospitals with a usable price to show a figure.
StateHospitalsMedianvs national20th–80th
Texas TX190$83+125%$41 – $179
Arizona AZ31$73+98%$7 – $251
California CA135$66+80%$28 – $168
South Carolina SC47$65+77%$36 – $129
Nebraska NE21$61+66%$23 – $69
Colorado CO43$57+54%$27 – $321
Iowa IA31$50+36%$33 – $85
Utah UT33$46+25%$39 – $80
Kentucky KY46$46+24%$13 – $66
Illinois IL92$45+23%$19 – $94
Florida FL138$42+15%$23 – $210
Washington WA42$41+11%$20 – $73
Maryland MD30$40+8%$30 – $47
North Carolina NC75$39+5%$13 – $87
Missouri MO56$37+1%$14 – $68
Georgia GA75$370%$26 – $73
Wisconsin WI88$36−2%$23 – $65
New Mexico NM15$36−3%$16 – $47
Kansas KS27$34−6%$11 – $125
Alabama AL35$33−11%$10 – $88
Michigan MI81$32−13%$18 – $82
Minnesota MN46$31−16%$23 – $70
Ohio OH120$30−18%$20 – $76
West Virginia WV18$30−18%$13 – $85
Virginia VA62$29−21%$26 – $70
Nevada NV13$29−22%$7 – $147
Oregon OR31$28−23%$11 – $53
Oklahoma OK42$28−24%$19 – $75
Connecticut CT17$27−27%$17 – $38
Indiana IN69$27−28%$7 – $62
Massachusetts MA32$26−29%$11 – $58
Mississippi MS33$25−32%$13 – $37
Hawaii HI14$22−39%$12 – $49
Arkansas AR23$22−40%$5 – $59
Rhode Island RI10$20−44%$10 – $31
Idaho ID14$19−48%$12 – $42
Pennsylvania PA104$18−50%$5 – $64
Louisiana LA43$17−54%$6 – $42
Tennessee TN60$16−56%$7 – $38
New York NY86$13−65%$7 – $38
New Jersey NJ54$5−87%$5 – $33
Alaska AK9not enough hospitals filed a usable price
New Hampshire NH8not enough hospitals filed a usable price
Maine ME7not enough hospitals filed a usable price
Montana MT7not enough hospitals filed a usable price
Delaware DE6not enough hospitals filed a usable price
North Dakota ND6not enough hospitals filed a usable price
South Dakota SD6not enough hospitals filed a usable price
Wyoming WY5not enough hospitals filed a usable price
Vermont VT1not 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 $37.

Cash price by hospital segment. A segment needs at least 20 hospitals to show a figure.
SegmentHospitalsMedian20th–80th
Hospital type
Acute care1,951$37$13 – $93
Children’s47$53$23 – $112
Critical access269$36$15 – $68
Ownership
For-profit360$61$17 – $251
Government257$33$12 – $77
Non-profit1,650$36$13 – $78
System affiliation
Part of a system1,994$37$14 – $90
Independent283$36$12 – $88

Cash price vs list price

Median list price (chargemaster)$71
Median cash price$37
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

1,643 hospitals filed a usable inpatient cash price for this code. The median is $38 and the average of the middle 60% is $43; most fall between $16 and $92.

Cash price percentiles, inpatient, across 1,643 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
$9$20$38$78$129

The most expensive tenth of hospitals charges at least 14× what the cheapest tenth charges ($9 vs $129).

Of the 1,827 hospitals that filed this code inpatient, 1,643 gave a usable cash price; 112 carried a plausibility flag, 1 filed a number their own filing marks as not a price, 0 gave an estimate, and 71 a list price only.

How complete is this

2,277 of the 3,956 hospitals with a price file in our corpus (58%) filed a usable outpatient cash price for this code, and those are the hospitals every figure on this page is computed from.

What the 2,495 hospitals that filed this code at all gave us
Usable cash price — counted2,277
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) — excluded0
An estimate rather than a filed cash price — excluded1
A list price only, no cash figure — excluded85
Hospitals that filed this code2,495

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 POC Activated Clotting Time.

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, “Activated clotting time test (CPT 85347) — cash price report,” computed September 25, 2026. https://hospitalrates.com/procedures/cpt-85347-activated-clotting-time-test