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Wada Test For Brain Hemisphere Function

Washington, DC rates for HCPCS 95958

This test temporarily numbs one side of the brain with a fast-acting medication delivered through a blood vessel, while brain wave activity is recorded and the patient performs language and memory tasks. It helps a surgical team figure out which side of the brain handles speech and memory before certain brain surgeries, most often surgery to treat epilepsy. Recording electrical brain activity during the test helps confirm that the medication is working as intended.

Rates data updated July 2026.

How much does Wada Test For Brain Hemisphere Function cost?

$676

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

Insurers have agreed to pay about $676 for this service. Most negotiated rates run $589 to $724.

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 $676 · 10th to 90th $676 to $4,365Professionalmedian $661 · 10th to 90th $447 to $891
$200$500$1K$2K$5Kfacility $676professional $661

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. 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
Global
Typical Low
$676.08
Median
$676.08
Typical High
$676.08
Aetna
Setting
Professional
Modifier
Global
Typical Low
$478.63
Median
$630.96
Typical High
$812.83
CareFirst
Setting
Professional
Modifier
Global
Typical Low
$257.04
Median
$724.44
Typical High
$1,348.96
Cigna
Setting
Professional
Modifier
Global
Typical Low
$331.13
Median
$977.24
Typical High
$3,090.30
Kaiser Permanente
Setting
Professional
Modifier
Global
Typical Low
$831.76
Median
$977.24
Typical High
$1,659.59
United
Setting
Facility
Modifier
Global
Typical Low
$3,715.35
Median
$4,365.16
Typical High
$5,011.87
United
Setting
Professional
Modifier
Global
Typical Low
$354.81
Median
$1,023.29
Typical High
$1,819.70

Where Washington, DC sits

The same service costs 2.8 times more in Minnesota than in Vermont. 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· 20th of 51

$676

MN $1,585VT $562

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.