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Procedure price report · Electroencephalogram (EEG)

Brain surface electrical recording during surgery

CPT 95829the billing code this page is about

Recording of electrical activity directly from the surface of the brain using electrodes placed during an operation, including interpretation and report.

Hospitals typically charge $1,219 cash for this outpatient procedure — the median across 628 hospitals that filed a usable cash price; the average of the middle 60% is $1,567. Most fall between $553 and $3,810 (20th–80th percentile).

Hospitals
628
States
49
Filings dated
Jul 2024 – 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 628 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
$377$620$1,219$3,116$6,212

The most expensive tenth of hospitals charges at least 16× what the cheapest tenth charges ($377 vs $6,212).

How the prices are spread

$233 – $332: 18 hospitals$233$332 – $472: 55 hospitals$472 – $673: 73 hospitals$472$673 – $960: 68 hospitals$960 – $1,367: 77 hospitals$960$1,367 – $1,949: 71 hospitals$1,949 – $2,777: 61 hospitals$1,949$2,777 – $3,958: 53 hospitals$3,958 – $5,641: 31 hospitals$3,958$5,641 – $8,039: 63 hospitals$5,641median $1,219price bands are equal on a log scale
Hospitals per price band (570 of 628 — the bands cover the 5th to 95th percentile)
FromToHospitals
$233$33218
$332$47255
$472$67373
$673$96068
$960$1,36777
$1,367$1,94971
$1,949$2,77761
$2,777$3,95853
$3,958$5,64131
$5,641$8,03963

By state

The median cash price in each state, against the national median of $1,219.

Alaska: 1 hospital filed a usable price — fewer than 10, so no figureAKMaine: 2 hospitals filed a usable price — fewer than 10, so no figureMEVermont: 2 hospitals filed a usable price — fewer than 10, so no figureVTNew Hampshire: 4 hospitals filed a usable price — fewer than 10, so no figureNHWashington: median $2,196 across 11 hospitalsWA$2,196Idaho: 6 hospitals filed a usable price — fewer than 10, so no figureIDMontana: 1 hospital filed a usable price — fewer than 10, so no figureMTNorth Dakota: 2 hospitals filed a usable price — fewer than 10, so no figureNDMinnesota: median $1,176 across 17 hospitalsMN$1,176Illinois: median $1,763 across 29 hospitalsIL$1,763Wisconsin: median $1,486 across 12 hospitalsWI$1,486Michigan: median $399 across 39 hospitalsMI$399New York: median $2,160 across 19 hospitalsNY$2,160Massachusetts: 5 hospitals filed a usable price — fewer than 10, so no figureMAOregon: median $3,073 across 10 hospitalsOR$3,073Nevada: 1 hospital filed a usable price — fewer than 10, so no figureNVWyoming: 2 hospitals filed a usable price — fewer than 10, so no figureWYSouth Dakota: no hospital in the corpus filed a usable priceSDIowa: median $786 across 15 hospitalsIA$786Indiana: median $861 across 16 hospitalsIN$861Ohio: median $2,722 across 44 hospitalsOH$2,722Pennsylvania: median $881 across 37 hospitalsPA$881New Jersey: 9 hospitals filed a usable price — fewer than 10, so no figureNJConnecticut: 5 hospitals filed a usable price — fewer than 10, so no figureCTRhode Island: 1 hospital filed a usable price — fewer than 10, so no figureRICalifornia: median $4,374 across 52 hospitalsCA$4,374Utah: 2 hospitals filed a usable price — fewer than 10, so no figureUTColorado: 3 hospitals filed a usable price — fewer than 10, so no figureCONebraska: 8 hospitals filed a usable price — fewer than 10, so no figureNEMissouri: 8 hospitals filed a usable price — fewer than 10, so no figureMOKentucky: 7 hospitals filed a usable price — fewer than 10, so no figureKYWest Virginia: 3 hospitals filed a usable price — fewer than 10, so no figureWVVirginia: median $844 across 23 hospitalsVA$844Maryland: 7 hospitals filed a usable price — fewer than 10, so no figureMDDelaware: 1 hospital filed a usable price — fewer than 10, so no figureDEArizona: median $823 across 11 hospitalsAZ$823New Mexico: 2 hospitals filed a usable price — fewer than 10, so no figureNMKansas: 3 hospitals filed a usable price — fewer than 10, so no figureKSArkansas: 6 hospitals filed a usable price — fewer than 10, so no figureARTennessee: median $501 across 11 hospitalsTN$501North Carolina: median $479 across 23 hospitalsNC$479South Carolina: 2 hospitals filed a usable price — fewer than 10, so no figureSCOklahoma: median $642 across 10 hospitalsOK$642Louisiana: 8 hospitals filed a usable price — fewer than 10, so no figureLAMississippi: 1 hospital filed a usable price — fewer than 10, so no figureMSAlabama: 4 hospitals filed a usable price — fewer than 10, so no figureALGeorgia: median $3,773 across 21 hospitalsGA$3,773Hawaii: 6 hospitals filed a usable price — fewer than 10, so no figureHITexas: median $1,661 across 72 hospitalsTX$1,661Florida: median $1,796 across 44 hospitalsFL$1,796
Cash price by state, most expensive first. National median $1,219. A state needs at least 10 hospitals with a usable price to show a figure.
StateHospitalsMedianvs national20th–80th
California CA52$4,374+259%$1,984 – $5,762
Georgia GA21$3,773+210%$432 – $19,291
Oregon OR10$3,073+152%$807 – $15,192
Ohio OH44$2,722+123%$1,046 – $4,643
Washington WA11$2,196+80%$961 – $3,538
New York NY19$2,160+77%$612 – $3,273
Florida FL44$1,796+47%$599 – $6,031
Illinois IL29$1,763+45%$401 – $3,139
Texas TX72$1,661+36%$1,033 – $1,791
Wisconsin WI12$1,486+22%$340 – $3,182
Minnesota MN17$1,176−4%$590 – $1,176
Pennsylvania PA37$881−28%$236 – $2,298
Indiana IN16$861−29%$401 – $1,142
Virginia VA23$844−31%$704 – $8,039
Arizona AZ11$823−32%$568 – $1,217
Iowa IA15$786−35%$786 – $1,001
Oklahoma OK10$642−47%$642 – $642
Tennessee TN11$501−59%$269 – $1,396
North Carolina NC23$479−61%$302 – $638
Michigan MI39$399−67%$98 – $6,791
New Jersey NJ9not enough hospitals filed a usable price
Louisiana LA8not enough hospitals filed a usable price
Missouri MO8not enough hospitals filed a usable price
Nebraska NE8not enough hospitals filed a usable price
Kentucky KY7not enough hospitals filed a usable price
Maryland MD7not enough hospitals filed a usable price
Arkansas AR6not enough hospitals filed a usable price
Hawaii HI6not enough hospitals filed a usable price
Idaho ID6not enough hospitals filed a usable price
Connecticut CT5not enough hospitals filed a usable price
Massachusetts MA5not enough hospitals filed a usable price
Alabama AL4not enough hospitals filed a usable price
New Hampshire NH4not enough hospitals filed a usable price
Colorado CO3not enough hospitals filed a usable price
Kansas KS3not enough hospitals filed a usable price
West Virginia WV3not enough hospitals filed a usable price
Maine ME2not enough hospitals filed a usable price
North Dakota ND2not enough hospitals filed a usable price
New Mexico NM2not enough hospitals filed a usable price
South Carolina SC2not enough hospitals filed a usable price
Utah UT2not enough hospitals filed a usable price
Vermont VT2not enough hospitals filed a usable price
Wyoming WY2not enough hospitals filed a usable price
Alaska AK1not enough hospitals filed a usable price
Delaware DE1not enough hospitals filed a usable price
Mississippi MS1not enough hospitals filed a usable price
Montana MT1not enough hospitals filed a usable price
Nevada NV1not 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 $1,219.

Cash price by hospital segment. A segment needs at least 20 hospitals to show a figure.
SegmentHospitalsMedian20th–80th
Hospital type
Acute care535$1,176$561 – $3,801
Children’s40$2,554$833 – $6,653
Critical access49$1,661$399 – $3,075
Ownership
For-profit49$1,176$432 – $5,941
Government67$981$432 – $3,773
Non-profit508$1,372$590 – $3,773
System affiliation
Part of a system571$1,208$561 – $3,773
Independent57$1,558$553 – $4,203

Cash price vs list price

Median list price (chargemaster)$2,616
Median cash price$1,219
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

502 hospitals filed a usable inpatient cash price for this code. The median is $1,396 and the average of the middle 60% is $1,695; most fall between $590 and $4,220.

Cash price percentiles, inpatient, across 502 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
$401$642$1,396$3,416$6,492

The most expensive tenth of hospitals charges at least 16× what the cheapest tenth charges ($401 vs $6,492).

Of the 532 hospitals that filed this code inpatient, 502 gave a usable cash price; 9 carried a plausibility flag, 1 filed a number their own filing marks as not a price, 0 gave an estimate, and 20 a list price only.

How complete is this

628 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 684 hospitals that filed this code at all gave us
Usable cash price — counted628
Cash price carrying a plausibility flag — shown on the compare tool, excluded here6
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 — excluded50
Hospitals that filed this code684

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 Electroencephalogram (EEG) family.

Hospitals file this code under descriptions such as Electrocorticogram Surgery Spx|PROFESSIONAL COMPONENT.

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, “Brain surface electrical recording during surgery (CPT 95829) — cash price report,” computed September 25, 2026. https://hospitalrates.com/procedures/cpt-95829-brain-surface-electrical-recording-during-surgery