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Extended EEG Brain Wave Monitoring

Washington, DC 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?

$355

Typical negotiated rate. In Washington, DC, October 2026.

Insurers have agreed to pay about $355 for this service. Most negotiated rates run $331 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 5 insurance carriers under federal price transparency rules.

How much rates vary

Facilitymedian $355 · 10th to 90th $355 to $912Professionalmedian $355 · 10th to 90th $54 to $589
$100$200$500$1Kfacility $355professional $355

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
$354.81
Median
$354.81
Typical High
$912.01
Aetna
Setting
Professional
Modifier
None (both parts)
Typical Low
$323.59
Median
$354.81
Typical High
$831.76
Aetna
Setting
Professional
Modifier
26 · Professional part
Typical Low
$51.29
Median
$52.48
Typical High
$125.89
Aetna
Setting
Professional
Modifier
TC · Technical part
Typical Low
$275.42
Median
$302.00
Typical High
$691.83
CareFirst
Setting
Professional
Modifier
None (both parts)
Typical Low
$53.70
Median
$338.84
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
$338.84
Cigna
Setting
Professional
Modifier
None (both parts)
Typical Low
$251.19
Median
$407.38
Typical High
$1,071.52
Cigna
Setting
Professional
Modifier
26 · Professional part
Typical Low
$50.12
Median
$70.79
Typical High
$162.18
Cigna
Setting
Professional
Modifier
TC · Technical part
Typical Low
$190.55
Median
$338.84
Typical High
$912.01
Kaiser Permanente
Setting
Professional
Modifier
None
Typical Low
$426.58
Median
$489.78
Typical High
$831.76
United
Setting
Professional
Modifier
None (both parts)
Typical Low
$234.42
Median
$616.60
Typical High
$1,096.48
United
Setting
Professional
Modifier
26 · Professional part
Typical Low
$43.65
Median
$107.15
Typical High
$162.18
United
Setting
Professional
Modifier
TC · Technical part
Typical Low
$177.83
Median
$549.54
Typical High
$933.25
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
$177.83
Typical High
$177.83
Aetna
Setting
Professional
Modifier
53 · Discontinued
Typical Low
$64.57
Median
$70.79
Typical High
$70.79

Where Washington, DC 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.

Washington, DC· 35th of 51

$355

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.