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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 October 2026.

How much does Extended EEG Brain Wave Monitoring cost?

$347

Typical negotiated rate. In Maryland, October 2026.

Insurers have agreed to pay about $347 for this service. Most negotiated rates run $309 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

Facilitymedian $407 · 10th to 90th $407 to $490Professionalmedian $347 · 10th to 90th $54 to $468
$100$200$500$1Kfacility $407professional $347

Distribution of negotiated rates across all payers (price axis is log-scale). Small sample; interpret with caution. Need provider-level prices or 24+ months of history? Contact us.

Rates by insurance carrier

Insurance Carrier
Aetna
Setting
Facility
Modifier
None
Typical Low
$407.38
Median
$407.38
Typical High
$489.78
Aetna
Setting
Professional
Modifier
None (both parts)
Typical Low
$323.59
Median
$354.81
Typical High
$380.19
Aetna
Setting
Professional
Modifier
26 · Professional part
Typical Low
$50.12
Median
$52.48
Typical High
$61.66
Aetna
Setting
Professional
Modifier
TC · Technical part
Typical Low
$275.42
Median
$302.00
Typical High
$323.59
CareFirst
Setting
Professional
Modifier
None (both parts)
Typical Low
$53.70
Median
$354.81
Typical High
$398.11
CareFirst
Setting
Professional
Modifier
26 · Professional part
Typical Low
$58.88
Median
$58.88
Typical High
$58.88
CareFirst
Setting
Professional
Modifier
TC · Technical part
Typical Low
$302.00
Median
$302.00
Typical High
$354.81
Cigna
Setting
Professional
Modifier
None (both parts)
Typical Low
$281.84
Median
$331.13
Typical High
$707.95
Cigna
Setting
Professional
Modifier
26 · Professional part
Typical Low
$48.98
Median
$56.23
Typical High
$114.82
Cigna
Setting
Professional
Modifier
TC · Technical part
Typical Low
$251.19
Median
$281.84
Typical High
$602.56
Kaiser Permanente
Setting
Professional
Modifier
None
Typical Low
$288.40
Median
$446.68
Typical High
$645.65
Kaiser Permanente
Setting
Professional
Modifier
26 · Professional part
Typical Low
$41.69
Median
$64.57
Typical High
$95.50
Kaiser Permanente
Setting
Professional
Modifier
TC · Technical part
Typical Low
$251.19
Median
$380.19
Typical High
$549.54
United
Setting
Professional
Modifier
None (both parts)
Typical Low
$186.21
Median
$346.74
Typical High
$870.96
United
Setting
Professional
Modifier
26 · Professional part
Typical Low
$43.65
Median
$64.57
Typical High
$144.54
United
Setting
Professional
Modifier
TC · Technical part
Typical Low
$154.88
Median
$295.12
Typical High
$724.44
Wellpoint
Setting
Professional
Modifier
None (both parts)
Typical Low
$263.03
Median
$263.03
Typical High
$645.65
Wellpoint
Setting
Professional
Modifier
26 · Professional part
Typical Low
$40.74
Median
$40.74
Typical High
$93.33
Wellpoint
Setting
Professional
Modifier
TC · Technical part
Typical Low
$218.78
Median
$218.78
Typical High
$549.54
2 more rates with less common billing modifiers

A modifier changes what was billed, for example a reduced or repeated service. Each of these modifiers carries under 10% of the published rates for this code. Modifier combinations, and modifiers with fewer than 30 rates for a carrier, are not listed.

Insurance Carrier
Aetna
Setting
Professional
Modifier
52 · Reduced service
Typical Low
$162.18
Median
$169.82
Typical High
$177.83
Aetna
Setting
Professional
Modifier
53 · Discontinued
Typical Low
$64.57
Median
$69.18
Typical High
$70.79

Where Maryland sits

The same service costs 3.2 times more in Alaska than in New Mexico. Every bar is a state, most expensive first. Touch or drag across it to read any state, then open that state for its carriers and full range.

Maryland· 38th of 51

$347

AK $776NM $240

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.