go back

Extended EEG Brain Wave Monitoring

Maryland rates for HCPCS 95812

This test records the brain's electrical activity using scalp electrodes over a longer period than a routine EEG, increasing the chance of capturing abnormal patterns, such as those linked to seizures, that might not appear during a brief recording. The extended recording time allows the patient to pass through more of a natural sleep-wake cycle while brain activity is continuously tracked. It falls between a standard-length EEG and a more prolonged, multi-hour or overnight monitoring study.

Rates data updated July 2026.

How much does Extended EEG Brain Wave Monitoring cost?

$347

Typical negotiated rate. In Maryland, July 2026.

Insurers have agreed to pay about $347 for this service. Most negotiated rates run $316 to $398.

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 $347 · 10th to 90th $275 to $525
$100.0$200.0$500.0$1.0K$2.0Kprofessional $347

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
$33.88
Median
$50.12
Typical High
$61.66
Aetna
Setting
Professional
Modifier
Global
Typical Low
$275.42
Median
$346.74
Typical High
$489.78
Aetna
Setting
Professional
Modifier
26 · Professional part
Typical Low
$50.12
Median
$57.54
Typical High
$147.91
CareFirst
Setting
Professional
Modifier
Global
Typical Low
$67.61
Median
$354.81
Typical High
$426.58
CareFirst
Setting
Professional
Modifier
26 · Professional part
Typical Low
$47.86
Median
$53.70
Typical High
$66.07
Cigna
Setting
Professional
Modifier
Global
Typical Low
$257.04
Median
$436.52
Typical High
$912.01
Cigna
Setting
Professional
Modifier
26 · Professional part
Typical Low
$51.29
Median
$74.13
Typical High
$151.36
Kaiser Permanente
Setting
Professional
Modifier
Global
Typical Low
$309.03
Median
$446.68
Typical High
$588.84
Kaiser Permanente
Setting
Professional
Modifier
26 · Professional part
Typical Low
$45.71
Median
$64.57
Typical High
$91.20
United
Setting
Professional
Modifier
Global
Typical Low
$208.93
Median
$398.11
Typical High
$812.83
United
Setting
Professional
Modifier
26 · Professional part
Typical Low
$45.71
Median
$70.79
Typical High
$141.25
Wellpoint
Setting
Professional
Modifier
Global
Typical Low
$263.03
Median
$407.38
Typical High
$602.56
Wellpoint
Setting
Professional
Modifier
26 · Professional part
Typical Low
$40.74
Median
$60.26
Typical High
$89.13

Where Maryland sits

The same service costs 2.4 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.

Maryland $347 · 42nd of 51
MN $741NM $309

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.