go back

Breathing Response To Carbon Dioxide Test

Washington rates for HCPCS 94400

A test of how strongly your breathing increases when the carbon dioxide level in the air you breathe is raised. You breathe through a mouthpiece while the gas mixture is adjusted and the depth and rate of your breathing are recorded, showing how sensitively the body's breathing control responds.

Rates data updated July 2026.

How much does Breathing Response To Carbon Dioxide Test cost?

$105

Typical facility fee. In Washington, July 2026.

Insurers have agreed to pay about $105 for this service. Most negotiated rates run $83.18 to $110.

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 3 insurance carriers under federal price transparency rules.

How much rates vary

Facilitymedian $102 · 10th to 90th $78 to $117Professionalmedian $191 · 10th to 90th $71 to $257
$100.0$200.0facility $102professional $191

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
Cigna
Setting
Professional
Modifier
Global
Typical Low
$102.33
Median
$213.80
Typical High
$275.42
Molina
Setting
Professional
Modifier
Global
Typical Low
$60.26
Median
$70.79
Typical High
$79.43
Pacific Source
Setting
Facility
Modifier
Global
Typical Low
$77.62
Median
$102.33
Typical High
$117.49

Where Washington sits

The same service costs 15.8 times more in Oklahoma than in South Carolina. Every bar is a state, most expensive first. Pick one to see its carriers and full range.

Washington $105 · 32nd of 41
OK $479SC $30.20

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.