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Wada Test For Brain Hemisphere Function

California 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 October 2026.

How much does Wada Test For Brain Hemisphere Function cost?

$525

Typical negotiated rate. In California, October 2026.

Insurers have agreed to pay about $525 for this service. The price depends on where it is billed: about $525 from a physician practice, and about $575 from a hospital or other facility.

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 13 insurance carriers under federal price transparency rules.

Prices by location type

Billed byTypicalRange
Physician practiceA doctor's office, clinic or independent provider$525$389 to $1,047
FacilityA hospital or hospital-owned outpatient department$575$363 to $759

How much rates vary

Facilitymedian $575 · 10th to 90th $191 to $1,259Professionalmedian $525 · 10th to 90th $355 to $3,981
$50$100$200$500$1K$2K$5Kfacility $575professional $525

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

Rates by insurance carrier

Insurance Carrier
Aetna
Setting
Facility
Modifier
None
Typical Low
$457.09
Median
$489.78
Typical High
$524.81
Aetna
Setting
Professional
Modifier
None (both parts)
Typical Low
$457.09
Median
$524.81
Typical High
$954.99
Aetna
Setting
Professional
Modifier
26 · Professional part
Typical Low
$199.53
Median
$218.78
Typical High
$309.03
Aetna
Setting
Professional
Modifier
TC · Technical part
Typical Low
$251.19
Median
$302.00
Typical High
$691.83
Anthem BCBS
Setting
Facility
Modifier
None
Typical Low
$181.97
Median
$194.98
Typical High
$213.80
Anthem BCBS
Setting
Professional
Modifier
None (both parts)
Typical Low
$380.19
Median
$426.58
Typical High
$1,479.11
Anthem BCBS
Setting
Professional
Modifier
26 · Professional part
Typical Low
$194.98
Median
$208.93
Typical High
$616.60
Anthem BCBS
Setting
Professional
Modifier
TC · Technical part
Typical Low
$158.49
Median
$186.21
Typical High
$891.25
Blue Shield
Setting
Facility
Modifier
None
Typical Low
$173.78
Median
$575.44
Typical High
$954.99
Blue Shield
Setting
Professional
Modifier
None (both parts)
Typical Low
$245.47
Median
$354.81
Typical High
$537.03
Blue Shield
Setting
Professional
Modifier
26 · Professional part
Typical Low
$125.89
Median
$181.97
Typical High
$275.42
Blue Shield
Setting
Professional
Modifier
TC · Technical part
Typical Low
$120.23
Median
$169.82
Typical High
$251.19
Central California Alliance for Health
Setting
Professional
Modifier
None (both parts)
Typical Low
$371.54
Median
$831.76
Typical High
$1,148.15
Cigna
Setting
Facility
Modifier
None
Typical Low
$812.83
Median
$1,122.02
Typical High
$3,890.45
Cigna
Setting
Professional
Modifier
None (both parts)
Typical Low
$346.74
Median
$630.96
Typical High
$1,318.26
Cigna
Setting
Professional
Modifier
26 · Professional part
Typical Low
$218.78
Median
$239.88
Typical High
$467.74
Cigna
Setting
Professional
Modifier
TC · Technical part
Typical Low
$120.23
Median
$398.11
Typical High
$891.25
Contra Costa Health
Setting
Professional
Modifier
None
Typical Low
$245.47
Median
$1,023.29
Typical High
$1,122.02
Contra Costa Health
Setting
Professional
Modifier
26 · Professional part
Typical Low
$199.53
Median
$269.15
Typical High
$323.59
Contra Costa Health
Setting
Professional
Modifier
TC · Technical part
Typical Low
$48.98
Median
$758.58
Typical High
$831.76
Kaiser Permanente
Setting
Professional
Modifier
None
Typical Low
$776.25
Median
$933.25
Typical High
$1,621.81
Kaiser Permanente
Setting
Professional
Modifier
26 · Professional part
Typical Low
$218.78
Median
$269.15
Typical High
$562.34
Kaiser Permanente
Setting
Professional
Modifier
TC · Technical part
Typical Low
$588.84
Median
$741.31
Typical High
$1,380.38
Lucent Health
Setting
Professional
Modifier
None (both parts)
Typical Low
$3,981.07
Median
$6,606.93
Typical High
$6,606.93
Lucent Health
Setting
Professional
Modifier
26 · Professional part
Typical Low
$1,412.54
Median
$1,862.09
Typical High
$1,862.09
Lucent Health
Setting
Professional
Modifier
TC · Technical part
Typical Low
$2,818.38
Median
$4,677.35
Typical High
$4,677.35
Molina
Setting
Professional
Modifier
None (both parts)
Typical Low
$316.23
Median
$645.65
Typical High
$954.99
Optum
Setting
Professional
Modifier
None (both parts)
Typical Low
$54.95
Median
$54.95
Typical High
$70.79
Providence
Setting
Facility
Modifier
None
Typical Low
$416.87
Median
$691.83
Typical High
$1,258.93
Providence
Setting
Professional
Modifier
None (both parts)
Typical Low
$346.74
Median
$630.96
Typical High
$1,412.54
Providence
Setting
Professional
Modifier
26 · Professional part
Typical Low
$218.78
Median
$234.42
Typical High
$407.38
Providence
Setting
Professional
Modifier
TC · Technical part
Typical Low
$120.23
Median
$389.05
Typical High
$812.83
Sutter Health Plus
Setting
Professional
Modifier
None (both parts)
Typical Low
$1,949.84
Median
$1,949.84
Typical High
$1,949.84
Sutter Health Plus
Setting
Professional
Modifier
26 · Professional part
Typical Low
$741.31
Median
$741.31
Typical High
$741.31
Sutter Health Plus
Setting
Professional
Modifier
TC · Technical part
Typical Low
$1,202.26
Median
$1,202.26
Typical High
$1,202.26
United
Setting
Facility
Modifier
None
Typical Low
$1,412.54
Median
$1,412.54
Typical High
$2,187.76
United
Setting
Professional
Modifier
None (both parts)
Typical Low
$398.11
Median
$616.60
Typical High
$1,318.26
United
Setting
Professional
Modifier
26 · Professional part
Typical Low
$173.78
Median
$229.09
Typical High
$457.09
United
Setting
Professional
Modifier
TC · Technical part
Typical Low
$169.82
Median
$371.54
Typical High
$977.24
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
$213.80
Median
$229.09
Typical High
$338.84
Aetna
Setting
Professional
Modifier
53 · Discontinued
Typical Low
$85.11
Median
$91.20
Typical High
$134.90

Where California sits

The same service costs 3.2 times more in Alaska than in Kentucky. 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.

California· 44th of 51

$525

AK $1,445KY $447

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.