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Wada Test For Brain Hemisphere Function

Washington 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.

Facilitymedian $891 · 10th–90th $363$2,5120%5%10th90th$891Professionalmedian $776 · 10th–90th $427$1,5850%10%10th90th$776$50.0$100.0$200.0$500.0$1.0K$2.0K$5.0K

Distribution of negotiated rates across all payers (price axis is log-scale). Facility and professional rates are different services and are charted separately. Need provider-level prices? Contact us.

Insurance Carrier
Aetna
Setting
Facility
Modifier
Global
Typical Low
$812.83
Median
$1,513.56
Typical High
$1,737.80
Aetna
Setting
Professional
Modifier
Global
Typical Low
$457.09
Median
$676.08
Typical High
$1,412.54
Asuris Northwest Health
Setting
Facility
Modifier
Global
Typical Low
$2,238.72
Median
$3,235.94
Typical High
$5,754.40
Asuris Northwest Health
Setting
Professional
Modifier
Global
Typical Low
$794.33
Median
$1,202.26
Typical High
$1,778.28
Cigna
Setting
Professional
Modifier
Global
Typical Low
$416.87
Median
$1,023.29
Typical High
$2,089.30
Kaiser Permanente
Setting
Facility
Modifier
Global
Typical Low
$338.84
Median
$776.25
Typical High
$1,819.70
Kaiser Permanente
Setting
Professional
Modifier
Global
Typical Low
$346.74
Median
$645.65
Typical High
$1,584.89
Molina
Setting
Professional
Modifier
Global
Typical Low
$32.36
Median
$33.11
Typical High
$446.68
Pacific Source
Setting
Facility
Modifier
Global
Typical Low
$316.23
Median
$676.08
Typical High
$1,412.54
Pacific Source
Setting
Professional
Modifier
Global
Typical Low
$229.09
Median
$398.11
Typical High
$660.69
Premera BCBS
Setting
Facility
Modifier
Global
Typical Low
$851.14
Median
$851.14
Typical High
$954.99
Premera BCBS
Setting
Professional
Modifier
Global
Typical Low
$954.99
Median
$1,288.25
Typical High
$1,862.09
Regence BlueShield
Setting
Facility
Modifier
Global
Typical Low
$1,949.84
Median
$3,090.30
Typical High
$5,623.41
Regence BlueShield
Setting
Professional
Modifier
Global
Typical Low
$794.33
Median
$1,202.26
Typical High
$1,698.24
United
Setting
Facility
Modifier
Global
Typical Low
$2,290.87
Median
$3,162.28
Typical High
$5,888.44
United
Setting
Professional
Modifier
Global
Typical Low
$549.54
Median
$891.25
Typical High
$1,862.09
Wellpoint
Setting
Professional
Modifier
Global
Typical Low
$588.84
Median
$912.01
Typical High
$1,122.02