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Extended Electroencephalogram (EEG), Over One Hour

South Carolina 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?

$427

Typical negotiated rate. In South Carolina, July 2026.

Insurers have agreed to pay about $427 for this service. Most negotiated rates run $398 to $589.

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 6 insurance carriers under federal price transparency rules.

How much rates vary

Professionalmedian $427 · 10th to 90th $363 to $891
$50.0$100.0$200.0$500.0$1.0K$2.0Kprofessional $427

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
$87.10
Median
$87.10
Typical High
$109.65
Aetna
Setting
Professional
Modifier
Global
Typical Low
$380.19
Median
$436.52
Typical High
$912.01
Aetna
Setting
Professional
Modifier
26 · Professional part
Typical Low
$79.43
Median
$91.20
Typical High
$426.58
Aetna
Setting
Professional
Modifier
TC · Technical part
Typical Low
$281.84
Median
$331.13
Typical High
$478.63
Ambetter
Setting
Professional
Modifier
Global
Typical Low
$489.78
Median
$489.78
Typical High
$660.69
Ambetter
Setting
Professional
Modifier
26 · Professional part
Typical Low
$93.33
Median
$128.82
Typical High
$158.49
BCBS
Setting
Professional
Modifier
Global
Typical Low
$169.82
Median
$446.68
Typical High
$616.60
BCBS
Setting
Professional
Modifier
26 · Professional part
Typical Low
$89.13
Median
$107.15
Typical High
$177.83
BCBS
Setting
Professional
Modifier
TC · Technical part
Typical Low
$63.10
Median
$275.42
Typical High
$467.74
Cigna
Setting
Professional
Modifier
Global
Typical Low
$251.19
Median
$457.09
Typical High
$812.83
Cigna
Setting
Professional
Modifier
26 · Professional part
Typical Low
$91.20
Median
$114.82
Typical High
$173.78
Cigna
Setting
Professional
Modifier
TC · Technical part
Typical Low
$169.82
Median
$371.54
Typical High
$645.65
Molina
Setting
Professional
Modifier
Global
Typical Low
$32.36
Median
$32.36
Typical High
$33.11
United
Setting
Professional
Modifier
Global
Typical Low
$288.40
Median
$416.87
Typical High
$758.58
United
Setting
Professional
Modifier
26 · Professional part
Typical Low
$77.62
Median
$93.33
Typical High
$173.78
United
Setting
Professional
Modifier
TC · Technical part
Typical Low
$194.98
Median
$323.59
Typical High
$575.44

Where South Carolina 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 Carolina $427 · 35th 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.