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Procedure price report · Electroencephalogram (EEG)

Placement of deep electrodes for brain wave recording

CPT 95830the billing code this page is about

Insertion of sphenoidal electrodes by a physician or other qualified clinician so that electrical activity from the deeper parts of the brain can be recorded.

Hospitals typically charge $358 cash for this outpatient procedure — the median across 139 hospitals that filed a usable cash price; the average of the middle 60% is $375. Most fall between $165 and $843 (20th–80th percentile).

Hospitals
139
States
30
Filings dated
Dec 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 139 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
$109$177$358$614$1,180

The most expensive tenth of hospitals charges at least 11× what the cheapest tenth charges ($109 vs $1,180).

How the prices are spread

$105 – $135: 12 hospitals$105$135 – $173: 12 hospitals$173 – $222: 21 hospitals$173$222 – $285: 12 hospitals$285 – $367: 9 hospitals$285$367 – $471: 11 hospitals$471 – $604: 21 hospitals$471$604 – $776: 7 hospitals$776 – $996: 6 hospitals$776$996 – $1,280: 18 hospitals$996median $358price bands are equal on a log scale
Hospitals per price band (129 of 139 — the bands cover the 5th to 95th percentile)
FromToHospitals
$105$13512
$135$17312
$173$22221
$222$28512
$285$3679
$367$47111
$471$60421
$604$7767
$776$9966
$996$1,28018

By state

The median cash price in each state, against the national median of $358.

Alaska: 1 hospital filed a usable price — fewer than 10, so no figureAKMaine: 1 hospital filed a usable price — fewer than 10, so no figureMEVermont: 3 hospitals filed a usable price — fewer than 10, so no figureVTNew Hampshire: 3 hospitals filed a usable price — fewer than 10, so no figureNHWashington: 5 hospitals filed a usable price — fewer than 10, so no figureWAIdaho: no hospital in the corpus filed a usable priceIDMontana: 1 hospital filed a usable price — fewer than 10, so no figureMTNorth Dakota: no hospital in the corpus filed a usable priceNDMinnesota: no hospital in the corpus filed a usable priceMNIllinois: median $333 across 13 hospitalsIL$333Wisconsin: no hospital in the corpus filed a usable priceWIMichigan: median $109 across 11 hospitalsMI$109New York: 4 hospitals filed a usable price — fewer than 10, so no figureNYMassachusetts: no hospital in the corpus filed a usable priceMAOregon: 5 hospitals filed a usable price — fewer than 10, so no figureORNevada: 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 $1,180 across 14 hospitalsIA$1,180Indiana: no hospital in the corpus filed a usable priceINOhio: median $564 across 17 hospitalsOH$564Pennsylvania: 1 hospital filed a usable price — fewer than 10, so no figurePANew Jersey: 1 hospital filed a usable price — fewer than 10, so no figureNJConnecticut: no hospital in the corpus filed a usable priceCTRhode Island: no hospital in the corpus filed a usable priceRICalifornia: 8 hospitals filed a usable price — fewer than 10, so no figureCAUtah: 1 hospital filed a usable price — fewer than 10, so no figureUTColorado: 1 hospital filed a usable price — fewer than 10, so no figureCONebraska: no hospital in the corpus filed a usable priceNEMissouri: 2 hospitals filed a usable price — fewer than 10, so no figureMOKentucky: 1 hospital filed a usable price — fewer than 10, so no figureKYWest Virginia: no hospital in the corpus filed a usable priceWVVirginia: no hospital in the corpus filed a usable priceVAMaryland: no hospital in the corpus filed a usable priceMDDelaware: no hospital in the corpus filed a usable priceDEArizona: no hospital in the corpus filed a usable priceAZNew Mexico: no hospital in the corpus filed a usable priceNMKansas: 3 hospitals filed a usable price — fewer than 10, so no figureKSArkansas: 3 hospitals filed a usable price — fewer than 10, so no figureARTennessee: 7 hospitals filed a usable price — fewer than 10, so no figureTNNorth Carolina: 2 hospitals filed a usable price — fewer than 10, so no figureNCSouth Carolina: 3 hospitals filed a usable price — fewer than 10, so no figureSCOklahoma: median $177 across 10 hospitalsOK$177Louisiana: 2 hospitals filed a usable price — fewer than 10, so no figureLAMississippi: no hospital in the corpus filed a usable priceMSAlabama: no hospital in the corpus filed a usable priceALGeorgia: no hospital in the corpus filed a usable priceGAHawaii: no hospital in the corpus filed a usable priceHITexas: 9 hospitals filed a usable price — fewer than 10, so no figureTXFlorida: 4 hospitals filed a usable price — fewer than 10, so no figureFL
Cash price by state, most expensive first. National median $358. A state needs at least 10 hospitals with a usable price to show a figure.
StateHospitalsMedianvs national20th–80th
Iowa IA14$1,180+230%$585 – $1,180
Ohio OH17$564+58%$410 – $564
Illinois IL13$333−7%$228 – $843
Oklahoma OK10$177−51%$177 – $177
Michigan MI11$109−70%$109 – $1,280
Texas TX9not enough hospitals filed a usable price
California CA8not enough hospitals filed a usable price
Tennessee TN7not enough hospitals filed a usable price
Oregon OR5not enough hospitals filed a usable price
Washington WA5not enough hospitals filed a usable price
Florida FL4not enough hospitals filed a usable price
New York NY4not enough hospitals filed a usable price
Arkansas AR3not enough hospitals filed a usable price
Kansas KS3not enough hospitals filed a usable price
New Hampshire NH3not enough hospitals filed a usable price
South Carolina SC3not enough hospitals filed a usable price
Vermont VT3not enough hospitals filed a usable price
Louisiana LA2not enough hospitals filed a usable price
Missouri MO2not enough hospitals filed a usable price
North Carolina NC2not enough hospitals filed a usable price
Wyoming WY2not enough hospitals filed a usable price
Alaska AK1not enough hospitals filed a usable price
Colorado CO1not enough hospitals filed a usable price
Kentucky KY1not enough hospitals filed a usable price
Maine ME1not enough hospitals filed a usable price
Montana MT1not enough hospitals filed a usable price
New Jersey NJ1not enough hospitals filed a usable price
Nevada NV1not enough hospitals filed a usable price
Pennsylvania PA1not enough hospitals filed a usable price
Utah UT1not 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 $358.

Cash price by hospital segment. A segment needs at least 20 hospitals to show a figure.
SegmentHospitalsMedian20th–80th
Hospital type
Acute care118$314$165 – $705
Children’s9fewer than 20 hospitals
Critical access12fewer than 20 hospitals
Ownership
For-profit12fewer than 20 hospitals
Government16fewer than 20 hospitals
Non-profit111$359$165 – $705
System affiliation
Part of a system115$387$165 – $843
Independent24$245$139 – $675

Cash price vs list price

Median list price (chargemaster)$549
Median cash price$358
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

105 hospitals filed a usable inpatient cash price for this code. The median is $358 and the average of the middle 60% is $379; most fall between $177 and $843.

Cash price percentiles, inpatient, across 105 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
$139$177$358$564$1,180

The most expensive tenth of hospitals charges at least 8.5× what the cheapest tenth charges ($139 vs $1,180).

Of the 135 hospitals that filed this code inpatient, 105 gave a usable cash price; 19 carried a plausibility flag, 1 filed a number their own filing marks as not a price, 0 gave an estimate, and 10 a list price only.

How complete is this

139 of the 3,956 hospitals with a price file in our corpus (4%) filed a usable outpatient cash price for this code, and those are the hospitals every figure on this page is computed from.

What the 172 hospitals that filed this code at all gave us
Usable cash price — counted139
Cash price carrying a plausibility flag — shown on the compare tool, excluded here16
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 — excluded17
Hospitals that filed this code172

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 5, 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 Insertion Sphenoidal Electrodes Eeg Phys/Qhp.

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, “Placement of deep electrodes for brain wave recording (CPT 95830) — cash price report,” computed September 25, 2026. https://hospitalrates.com/procedures/cpt-95830-placement-of-deep-electrodes-for-brain-wave-recording