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Extended Electroencephalogram (EEG), Over One Hour

Illinois 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 Illinois, July 2026.

Insurers have agreed to pay about $427 for this service. Most negotiated rates run $347 to $562.

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 $427 · 10th to 90th $132 to $724
$20.0$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
$81.28
Median
$87.10
Typical High
$134.90
Aetna
Setting
Professional
Modifier
Global
Typical Low
$338.84
Median
$407.38
Typical High
$616.60
Aetna
Setting
Professional
Modifier
26 · Professional part
Typical Low
$77.62
Median
$91.20
Typical High
$194.98
Aetna
Setting
Professional
Modifier
TC · Technical part
Typical Low
$263.03
Median
$323.59
Typical High
$467.74
Ambetter
Setting
Professional
Modifier
Global
Typical Low
$426.58
Median
$457.09
Typical High
$562.34
Ambetter
Setting
Professional
Modifier
26 · Professional part
Typical Low
$93.33
Median
$109.65
Typical High
$123.03
BCBS
Setting
Professional
Modifier
Global
Typical Low
$95.50
Median
$302.00
Typical High
$707.95
Cigna
Setting
Professional
Modifier
Global
Typical Low
$309.03
Median
$549.54
Typical High
$831.76
Cigna
Setting
Professional
Modifier
26 · Professional part
Typical Low
$85.11
Median
$117.49
Typical High
$186.21
Cigna
Setting
Professional
Modifier
TC · Technical part
Typical Low
$229.09
Median
$446.68
Typical High
$676.08
Hally Health
Setting
Professional
Modifier
Global
Typical Low
$354.81
Median
$630.96
Typical High
$977.24
Hally Health
Setting
Professional
Modifier
26 · Professional part
Typical Low
$85.11
Median
$131.83
Typical High
$416.87
Hally Health
Setting
Professional
Modifier
TC · Technical part
Typical Low
$239.88
Median
$457.09
Typical High
$630.96
Hally Health
Setting
Facility
Modifier
26 · Professional part
Typical Low
$100.00
Median
$100.00
Typical High
$100.00
Hally Health
Setting
Professional
Modifier
Global
Typical Low
$512.86
Median
$537.03
Typical High
$575.44
Hally Health
Setting
Professional
Modifier
26 · Professional part
Typical Low
$102.33
Median
$102.33
Typical High
$109.65
Hally Health
Setting
Professional
Modifier
TC · Technical part
Typical Low
$416.87
Median
$436.52
Typical High
$467.74
Molina
Setting
Professional
Modifier
Global
Typical Low
$32.36
Median
$33.11
Typical High
$61.66
United
Setting
Professional
Modifier
Global
Typical Low
$309.03
Median
$512.86
Typical High
$977.24
United
Setting
Professional
Modifier
26 · Professional part
Typical Low
$85.11
Median
$128.82
Typical High
$218.78
United
Setting
Professional
Modifier
TC · Technical part
Typical Low
$239.88
Median
$363.08
Typical High
$630.96

Where Illinois 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.

Illinois $427 · 33rd 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.