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Procedure price report · Other Laboratory

Carbamazepine blood level, total

CPT 80156the billing code this page is about

A blood test that measures the total amount of the seizure medication carbamazepine in the bloodstream.

Hospitals typically charge $90 cash for this outpatient procedure — the median across 3,261 hospitals that filed a usable cash price; the average of the middle 60% is $94. Most fall between $40 and $171 (20th–80th percentile).

Hospitals
3,261
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 3,261 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
$26$46$90$149$272

The most expensive tenth of hospitals charges at least 11× what the cheapest tenth charges ($26 vs $272).

How the prices are spread

$17 – $23: 120 hospitals$17$23 – $32: 192 hospitals$32 – $44: 288 hospitals$32$44 – $61: 325 hospitals$61 – $84: 433 hospitals$61$84 – $115: 527 hospitals$115 – $159: 483 hospitals$115$159 – $220: 302 hospitals$220 – $303: 150 hospitals$220$303 – $418: 120 hospitals$303median $90price bands are equal on a log scale
Hospitals per price band (2,940 of 3,261 — the bands cover the 5th to 95th percentile)
FromToHospitals
$17$23120
$23$32192
$32$44288
$44$61325
$61$84433
$84$115527
$115$159483
$159$220302
$220$303150
$303$418120

By state

The median cash price in each state, against the national median of $90.

Alaska: median $215 across 18 hospitalsAK$215Maine: median $78 across 28 hospitalsME$78Vermont: median $98 across 13 hospitalsVT$98New Hampshire: median $100 across 23 hospitalsNH$100Washington: median $92 across 76 hospitalsWA$92Idaho: median $69 across 24 hospitalsID$69Montana: median $106 across 31 hospitalsMT$106North Dakota: median $74 across 30 hospitalsND$74Minnesota: median $71 across 105 hospitalsMN$71Illinois: median $125 across 143 hospitalsIL$125Wisconsin: median $92 across 103 hospitalsWI$92Michigan: median $53 across 96 hospitalsMI$53New York: median $46 across 105 hospitalsNY$46Massachusetts: median $90 across 51 hospitalsMA$90Oregon: median $72 across 39 hospitalsOR$72Nevada: median $106 across 21 hospitalsNV$106Wyoming: median $72 across 15 hospitalsWY$72South Dakota: median $112 across 38 hospitalsSD$112Iowa: median $87 across 86 hospitalsIA$87Indiana: median $103 across 94 hospitalsIN$103Ohio: median $66 across 134 hospitalsOH$66Pennsylvania: median $87 across 121 hospitalsPA$87New Jersey: median $17 across 57 hospitalsNJ$17Connecticut: median $61 across 23 hospitalsCT$61Rhode Island: median $101 across 10 hospitalsRI$101California: median $145 across 152 hospitalsCA$145Utah: median $77 across 41 hospitalsUT$77Colorado: median $84 across 67 hospitalsCO$84Nebraska: median $114 across 79 hospitalsNE$114Missouri: median $82 across 77 hospitalsMO$82Kentucky: median $114 across 57 hospitalsKY$114West Virginia: median $103 across 41 hospitalsWV$103Virginia: median $93 across 73 hospitalsVA$93Maryland: median $41 across 41 hospitalsMD$41Delaware: 7 hospitals filed a usable price — fewer than 10, so no figureDEArizona: median $92 across 42 hospitalsAZ$92New Mexico: median $128 across 29 hospitalsNM$128Kansas: median $124 across 83 hospitalsKS$124Arkansas: median $44 across 38 hospitalsAR$44Tennessee: median $55 across 80 hospitalsTN$55North Carolina: median $83 across 84 hospitalsNC$83South Carolina: median $114 across 52 hospitalsSC$114Oklahoma: median $70 across 72 hospitalsOK$70Louisiana: median $49 across 48 hospitalsLA$49Mississippi: median $65 across 54 hospitalsMS$65Alabama: median $81 across 43 hospitalsAL$81Georgia: median $82 across 107 hospitalsGA$82Hawaii: median $92 across 19 hospitalsHI$92Texas: median $135 across 239 hospitalsTX$135Florida: median $185 across 152 hospitalsFL$185
Cash price by state, most expensive first. National median $90. A state needs at least 10 hospitals with a usable price to show a figure.
StateHospitalsMedianvs national20th–80th
Alaska AK18$215+139%$158 – $325
Florida FL152$185+105%$38 – $1,075
California CA152$145+61%$48 – $321
Texas TX239$135+50%$58 – $302
New Mexico NM29$128+42%$74 – $195
Illinois IL143$125+39%$66 – $197
Kansas KS83$124+38%$76 – $147
Kentucky KY57$114+27%$44 – $184
Nebraska NE79$114+27%$48 – $163
South Carolina SC52$114+26%$71 – $152
South Dakota SD38$112+24%$78 – $230
Montana MT31$106+18%$67 – $125
Nevada NV21$106+17%$44 – $154
West Virginia WV41$103+14%$69 – $133
Indiana IN94$103+14%$34 – $204
Rhode Island RI10$101+12%$31 – $116
New Hampshire NH23$100+11%$68 – $221
Vermont VT13$98+9%$78 – $184
Virginia VA73$93+3%$51 – $170
Arizona AZ42$92+2%$20 – $349
Washington WA76$92+2%$60 – $139
Wisconsin WI103$92+2%$59 – $141
Hawaii HI19$92+2%$38 – $154
Massachusetts MA51$900%$50 – $141
Iowa IA86$87−3%$66 – $125
Pennsylvania PA121$87−4%$23 – $181
Colorado CO67$84−7%$47 – $164
North Carolina NC84$83−8%$33 – $135
Missouri MO77$82−9%$48 – $156
Georgia GA107$82−9%$36 – $175
Alabama AL43$81−11%$39 – $190
Maine ME28$78−13%$42 – $180
Utah UT41$77−15%$65 – $149
North Dakota ND30$74−18%$26 – $112
Wyoming WY15$72−20%$32 – $137
Oregon OR39$72−20%$38 – $119
Minnesota MN105$71−21%$35 – $118
Oklahoma OK72$70−22%$38 – $131
Idaho ID24$69−23%$64 – $144
Ohio OH134$66−27%$44 – $113
Mississippi MS54$65−27%$41 – $83
Connecticut CT23$61−32%$39 – $121
Tennessee TN80$55−38%$26 – $120
Michigan MI96$53−41%$27 – $98
Louisiana LA48$49−45%$27 – $87
New York NY105$46−49%$17 – $145
Arkansas AR38$44−51%$21 – $92
Maryland MD41$41−54%$32 – $49
New Jersey NJ57$17−81%$16 – $50
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 $90.

Cash price by hospital segment. A segment needs at least 20 hospitals to show a figure.
SegmentHospitalsMedian20th–80th
Hospital type
Acute care2,255$84$36 – $184
Children’s61$114$50 – $187
Critical access935$100$51 – $157
Ownership
For-profit450$147$48 – $599
Government618$92$41 – $157
Non-profit2,183$85$37 – $152
System affiliation
Part of a system2,642$90$39 – $174
Independent619$89$43 – $160

Cash price vs list price

Median list price (chargemaster)$150
Median cash price$90
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

2,203 hospitals filed a usable inpatient cash price for this code. The median is $89 and the average of the middle 60% is $93; most fall between $41 and $166.

Cash price percentiles, inpatient, across 2,203 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
$27$47$89$145$243

The most expensive tenth of hospitals charges at least 9.1× what the cheapest tenth charges ($27 vs $243).

Of the 2,431 hospitals that filed this code inpatient, 2,203 gave a usable cash price; 117 carried a plausibility flag, 0 filed a number their own filing marks as not a price, 0 gave an estimate, and 111 a list price only.

How complete is this

3,261 of the 3,956 hospitals with a price file in our corpus (82%) filed a usable outpatient cash price for this code, and those are the hospitals every figure on this page is computed from.

What the 3,560 hospitals that filed this code at all gave us
Usable cash price — counted3,261
Cash price carrying a plausibility flag — shown on the compare tool, excluded here165
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 — excluded133
Hospitals that filed this code3,560

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 Other Laboratory family.

Hospitals file this code under descriptions such as HC 10,11 Epoxide.

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, “Carbamazepine blood level, total (CPT 80156) — cash price report,” computed September 25, 2026. https://hospitalrates.com/procedures/cpt-80156-carbamazepine-blood-level-total