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Extended Electroencephalogram (EEG), Over One Hour

South Dakota rates for HCPCS 95813

Sensors placed on the scalp record the brain's electrical activity continuously over a longer session than a routine brain wave test, typically lasting more than an hour. The extra recording time increases the chance of capturing abnormal patterns, such as seizure activity, that might not appear during a shorter test. It is noninvasive and doesn't involve sampling from inside the body.

Rates data updated July 2026.

How much does Extended Electroencephalogram (EEG), Over One Hour cost?

$575

Typical negotiated rate. In South Dakota, July 2026.

Insurers have agreed to pay about $575 for this service. Most negotiated rates run $447 to $851.

These are rates insurers have negotiated with providers, not the amount a patient is billed. What you owe depends on your plan's deductible and coinsurance. Based on rates published by 7 insurance carriers under federal price transparency rules.

How much rates vary

Professionalmedian $575 · 10th to 90th $389 to $1,047
$100.0$200.0$500.0$1.0K$2.0Kprofessional $575

Distribution of negotiated rates across all payers (price axis is log-scale). Each curve is scaled to its own total: facility and professional rates are different services, shown together to compare where they cluster. Need provider-level prices or 24+ months of history? Contact us.

Rates by insurance carrier

Insurance Carrier
Aetna
Setting
Facility
Modifier
26 · Professional part
Typical Low
$89.13
Median
$89.13
Typical High
$89.13
Aetna
Setting
Professional
Modifier
Global
Typical Low
$389.05
Median
$457.09
Typical High
$602.56
Aetna
Setting
Professional
Modifier
26 · Professional part
Typical Low
$79.43
Median
$95.50
Typical High
$371.54
Aetna
Setting
Professional
Modifier
TC · Technical part
Typical Low
$316.23
Median
$389.05
Typical High
$891.25
Cigna
Setting
Professional
Modifier
Global
Typical Low
$812.83
Median
$977.24
Typical High
$1,202.26
Cigna
Setting
Professional
Modifier
26 · Professional part
Typical Low
$162.18
Median
$177.83
Typical High
$223.87
Cigna
Setting
Professional
Modifier
TC · Technical part
Typical Low
$660.69
Median
$794.33
Typical High
$1,000.00
Medica
Setting
Professional
Modifier
Global
Typical Low
$354.81
Median
$537.03
Typical High
$2,754.23
Medica
Setting
Professional
Modifier
26 · Professional part
Typical Low
$75.86
Median
$123.03
Typical High
$776.25
Medica
Setting
Professional
Modifier
TC · Technical part
Typical Low
$275.42
Median
$426.58
Typical High
$2,187.76
Midlands
Setting
Professional
Modifier
Global
Typical Low
$758.58
Median
$831.76
Typical High
$1,071.52
Midlands
Setting
Professional
Modifier
26 · Professional part
Typical Low
$169.82
Median
$177.83
Typical High
$208.93
Midlands
Setting
Professional
Modifier
TC · Technical part
Typical Low
$588.84
Median
$660.69
Typical High
$851.14
Midlands
Setting
Professional
Modifier
Global
Typical Low
$831.76
Median
$831.76
Typical High
$933.25
Midlands
Setting
Professional
Modifier
26 · Professional part
Typical Low
$177.83
Median
$177.83
Typical High
$194.98
Midlands
Setting
Professional
Modifier
TC · Technical part
Typical Low
$660.69
Median
$660.69
Typical High
$724.44
Sanford Health Plan
Setting
Professional
Modifier
Global
Typical Low
$389.05
Median
$707.95
Typical High
$954.99
Sanford Health Plan
Setting
Professional
Modifier
26 · Professional part
Typical Low
$97.72
Median
$138.04
Typical High
$177.83
Sanford Health Plan
Setting
Professional
Modifier
TC · Technical part
Typical Low
$281.84
Median
$588.84
Typical High
$741.31
United
Setting
Professional
Modifier
Global
Typical Low
$295.12
Median
$741.31
Typical High
$1,023.29
United
Setting
Professional
Modifier
26 · Professional part
Typical Low
$87.10
Median
$158.49
Typical High
$229.09
United
Setting
Professional
Modifier
TC · Technical part
Typical Low
$275.42
Median
$575.44
Typical High
$851.14
Wellmark
Setting
Professional
Modifier
Global
Typical Low
$758.58
Median
$954.99
Typical High
$1,174.90
Wellmark
Setting
Professional
Modifier
26 · Professional part
Typical Low
$138.04
Median
$177.83
Typical High
$213.80
Wellmark
Setting
Professional
Modifier
TC · Technical part
Typical Low
$616.60
Median
$776.25
Typical High
$954.99

Where South Dakota sits

The same service costs 2.5 times more in Minnesota than in New Mexico. Every bar is a state, most expensive first. Pick one to see its carriers and full range.

South Dakota $575 · 4th of 51
MN $933NM $372

Median negotiated rate in each state, from every insurer that publishes one. States where no insurer publishes a rate for this service are not shown.