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Procedure price report · Laboratory - Chemistry and Hematology

Carbon dioxide (bicarbonate) blood test

CPT 82374the billing code this page is about

A laboratory test that measures the carbon dioxide, mainly as bicarbonate, in a blood specimen as a measure of acid-base balance.

Hospitals typically charge $34 cash for this outpatient procedure — the median across 3,121 hospitals that filed a usable cash price; the average of the middle 60% is $36. Most fall between $15 and $68 (20th–80th percentile).

Hospitals
3,121
States
50
Filings dated
Aug 2022 – 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 3,121 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$18$34$58$105

The most expensive tenth of hospitals charges at least 12× what the cheapest tenth charges ($9 vs $105).

How the prices are spread

$6 – $8: 114 hospitals$6$8 – $11: 170 hospitals$11 – $16: 253 hospitals$11$16 – $23: 362 hospitals$23 – $32: 448 hospitals$23$32 – $46: 507 hospitals$46 – $65: 467 hospitals$46$65 – $92: 245 hospitals$92 – $130: 182 hospitals$92$130 – $184: 78 hospitals$130median $34price bands are equal on a log scale
Hospitals per price band (2,826 of 3,121 — the bands cover the 5th to 95th percentile)
FromToHospitals
$6$8114
$8$11170
$11$16253
$16$23362
$23$32448
$32$46507
$46$65467
$65$92245
$92$130182
$130$18478

By state

The median cash price in each state, against the national median of $34.

Alaska: median $57 across 13 hospitalsAK$57Maine: median $28 across 28 hospitalsME$28Vermont: median $50 across 12 hospitalsVT$50New Hampshire: median $36 across 21 hospitalsNH$36Washington: median $38 across 71 hospitalsWA$38Idaho: median $37 across 24 hospitalsID$37Montana: median $35 across 30 hospitalsMT$35North Dakota: median $38 across 29 hospitalsND$38Minnesota: median $40 across 98 hospitalsMN$40Illinois: median $50 across 133 hospitalsIL$50Wisconsin: median $35 across 102 hospitalsWI$35Michigan: median $22 across 87 hospitalsMI$22New York: median $18 across 104 hospitalsNY$18Massachusetts: median $33 across 46 hospitalsMA$33Oregon: median $26 across 42 hospitalsOR$26Nevada: median $26 across 20 hospitalsNV$26Wyoming: median $32 across 15 hospitalsWY$32South Dakota: median $68 across 25 hospitalsSD$68Iowa: median $35 across 86 hospitalsIA$35Indiana: median $33 across 92 hospitalsIN$33Ohio: median $27 across 142 hospitalsOH$27Pennsylvania: median $25 across 121 hospitalsPA$25New Jersey: median $6 across 51 hospitalsNJ$6Connecticut: median $20 across 21 hospitalsCT$20Rhode Island: median $29 across 10 hospitalsRI$29California: median $43 across 154 hospitalsCA$43Utah: median $46 across 40 hospitalsUT$46Colorado: median $43 across 67 hospitalsCO$43Nebraska: median $50 across 64 hospitalsNE$50Missouri: median $32 across 74 hospitalsMO$32Kentucky: median $40 across 58 hospitalsKY$40West Virginia: median $30 across 36 hospitalsWV$30Virginia: median $40 across 67 hospitalsVA$40Maryland: median $5 across 41 hospitalsMD$5Delaware: 7 hospitals filed a usable price — fewer than 10, so no figureDEArizona: median $71 across 41 hospitalsAZ$71New Mexico: median $44 across 17 hospitalsNM$44Kansas: median $34 across 77 hospitalsKS$34Arkansas: median $16 across 36 hospitalsAR$16Tennessee: median $23 across 75 hospitalsTN$23North Carolina: median $35 across 80 hospitalsNC$35South Carolina: median $29 across 52 hospitalsSC$29Oklahoma: median $26 across 68 hospitalsOK$26Louisiana: median $18 across 46 hospitalsLA$18Mississippi: median $24 across 52 hospitalsMS$24Alabama: median $24 across 42 hospitalsAL$24Georgia: median $27 across 103 hospitalsGA$27Hawaii: median $36 across 18 hospitalsHI$36Texas: median $54 across 233 hospitalsTX$54Florida: median $55 across 150 hospitalsFL$55
Cash price by state, most expensive first. National median $34. A state needs at least 10 hospitals with a usable price to show a figure.
StateHospitalsMedianvs national20th–80th
Arizona AZ41$71+107%$17 – $210
South Dakota SD25$68+99%$34 – $94
Alaska AK13$57+67%$45 – $72
Florida FL150$55+63%$14 – $334
Texas TX233$54+58%$26 – $137
Vermont VT12$50+48%$26 – $85
Nebraska NE64$50+47%$20 – $84
Illinois IL133$50+45%$25 – $95
Utah UT40$46+34%$39 – $69
New Mexico NM17$44+29%$23 – $97
California CA154$43+27%$23 – $98
Colorado CO67$43+26%$21 – $74
Minnesota MN98$40+17%$15 – $68
Kentucky KY58$40+16%$16 – $93
Virginia VA67$40+16%$22 – $55
Washington WA71$38+13%$23 – $62
North Dakota ND29$38+11%$31 – $47
Idaho ID24$37+8%$17 – $63
New Hampshire NH21$36+6%$22 – $63
Hawaii HI18$36+5%$31 – $48
Montana MT30$35+3%$25 – $48
North Carolina NC80$35+3%$15 – $65
Wisconsin WI102$35+3%$20 – $50
Iowa IA86$35+2%$29 – $54
Kansas KS77$34−1%$16 – $65
Massachusetts MA46$33−3%$17 – $64
Indiana IN92$33−4%$11 – $68
Wyoming WY15$32−6%$15 – $59
Missouri MO74$32−7%$15 – $60
West Virginia WV36$30−12%$16 – $50
Rhode Island RI10$29−15%$11 – $30
South Carolina SC52$29−15%$19 – $41
Maine ME28$28−19%$13 – $58
Ohio OH142$27−21%$13 – $51
Georgia GA103$27−22%$15 – $62
Nevada NV20$26−24%$19 – $77
Oklahoma OK68$26−25%$11 – $39
Oregon OR42$26−25%$17 – $45
Pennsylvania PA121$25−28%$8 – $57
Alabama AL42$24−30%$14 – $99
Mississippi MS52$24−31%$12 – $47
Tennessee TN75$23−32%$9 – $49
Michigan MI87$22−35%$14 – $41
Connecticut CT21$20−41%$14 – $29
Louisiana LA46$18−47%$9 – $45
New York NY104$18−47%$8 – $57
Arkansas AR36$16−52%$12 – $35
New Jersey NJ51$6−84%$5 – $19
Maryland MD41$5−84%$4 – $7
Delaware DE7not 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 $34.

Cash price by hospital segment. A segment needs at least 20 hospitals to show a figure.
SegmentHospitalsMedian20th–80th
Hospital type
Acute care2,202$31$14 – $72
Children’s64$39$20 – $87
Critical access845$38$20 – $62
Ownership
For-profit430$53$19 – $221
Government570$34$17 – $61
Non-profit2,111$32$14 – $61
System affiliation
Part of a system2,546$35$15 – $71
Independent575$32$17 – $62

Cash price vs list price

Median list price (chargemaster)$57
Median cash price$34
Cash as a share of list, median hospital65%

At the typical hospital, asking for the cash price cuts the list price by about 35%. 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

2,099 hospitals filed a usable inpatient cash price for this code. The median is $34 and the average of the middle 60% is $36; most fall between $16 and $63.

Cash price percentiles, inpatient, across 2,099 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
$10$19$34$56$99

The most expensive tenth of hospitals charges at least 9.9× what the cheapest tenth charges ($10 vs $99).

Of the 2,318 hospitals that filed this code inpatient, 2,099 gave a usable cash price; 112 carried a plausibility flag, 0 filed a number their own filing marks as not a price, 0 gave an estimate, and 107 a list price only.

How complete is this

3,121 of the 3,956 hospitals with a price file in our corpus (79%) filed a usable outpatient cash price for this code, and those are the hospitals every figure on this page is computed from.

What the 3,393 hospitals that filed this code at all gave us
Usable cash price — counted3,121
Cash price carrying a plausibility flag — shown on the compare tool, excluded here150
A number the filing itself marks as not a price (a placeholder, a ratio) — excluded0
An estimate rather than a filed cash price — excluded0
A list price only, no cash figure — excluded122
Hospitals that filed this code3,393

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 July 20, 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 Co2.

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, “Carbon dioxide (bicarbonate) blood test (CPT 82374) — cash price report,” computed September 25, 2026. https://hospitalrates.com/procedures/cpt-82374-carbon-dioxide-bicarbonate-blood-test