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Brain Artery Ultrasound Reactivity Test

Hawaii rates for HCPCS 93890

An ultrasound study of the arteries inside the head that measures how well they can widen when challenged — by breathing a carbon dioxide mixture or by a medicine that dilates vessels. A probe held against the skull tracks the speed of blood flow before and after the challenge, showing how much spare capacity the brain's circulation still has.

Rates data updated October 2026.

How much rates vary

Professionalmedian $372 · 10th to 90th $363 to $372
$500professional $372

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
United
Setting
Professional
Modifier
None (both parts)
Typical Low
$288.40
Median
$288.40
Typical High
$288.40
University Health Alliance
Setting
Professional
Modifier
None (both parts)
Typical Low
$363.08
Median
$371.54
Typical High
$371.54
University Health Alliance
Setting
Professional
Modifier
26 · Professional part
Typical Low
$60.26
Median
$61.66
Typical High
$61.66
University Health Alliance
Setting
Professional
Modifier
TC · Technical part
Typical Low
$302.00
Median
$309.03
Typical High
$309.03