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Urine Trimethylamine And TMAO Test

Massachusetts rates for HCPCS 0256U

Measures two related chemicals in urine — trimethylamine and its oxidized form, trimethylamine N-oxide — and reports them together as a paired profile. Trimethylamine is produced when gut bacteria break down certain foods, and the body normally converts it into trimethylamine N-oxide.

Rates data updated July 2026.

How much does Urine Trimethylamine And TMAO Test cost?

$158

Typical negotiated rate. In Massachusetts, July 2026.

Insurers have agreed to pay about $158 for this service. The price depends on where it is billed: about $158 from a physician practice, and about $275 from a hospital or other facility. The two figures are alternatives, not parts of one bill.

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 7 insurance carriers under federal price transparency rules.

Where it's billed changes the price

Billed byTypicalRange
Physician practiceA doctor's office, clinic or independent provider$158$112 to $158
FacilityA hospital or hospital-owned outpatient department$275$158 to $468

How much rates vary

Facilitymedian $275 · 10th to 90th $112 to $676Professionalmedian $158 · 10th to 90th $95 to $257
$100$200$500$1K$2K$5Kfacility $275professional $158

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. Need provider-level prices or 24+ months of history? Contact us.

Rates by insurance carrier

Insurance Carrier
Aetna
Setting
Facility
Modifier
Global
Typical Low
$112.20
Median
$275.42
Typical High
$467.74
Aetna
Setting
Professional
Modifier
Global
Typical Low
$104.71
Median
$112.20
Typical High
$128.82
AllWays Health Partners
Setting
Facility
Modifier
Global
Typical Low
$758.58
Median
$758.58
Typical High
$758.58
AllWays Health Partners
Setting
Professional
Modifier
Global
Typical Low
$77.62
Median
$95.50
Typical High
$239.88
Cigna
Setting
Facility
Modifier
Global
Typical Low
$107.15
Median
$125.89
Typical High
$257.04
Cigna
Setting
Professional
Modifier
Global
Typical Low
$181.97
Median
$194.98
Typical High
$245.47
Fallon Health
Setting
Facility
Modifier
Global
Typical Low
$83.18
Median
$4,897.79
Typical High
$9,772.37
Fallon Health
Setting
Professional
Modifier
Global
Typical Low
$229.09
Median
$229.09
Typical High
$269.15
Harvard Pilgrim
Setting
Professional
Modifier
Global
Typical Low
$158.49
Median
$158.49
Typical High
$269.15
Mass General Brigham
Setting
Facility
Modifier
Global
Typical Low
$758.58
Median
$758.58
Typical High
$758.58
Mass General Brigham
Setting
Professional
Modifier
Global
Typical Low
$77.62
Median
$95.50
Typical High
$239.88
United
Setting
Facility
Modifier
Global
Typical Low
$95.50
Median
$158.49
Typical High
$190.55
United
Setting
Professional
Modifier
Global
Typical Low
$95.50
Median
$147.91
Typical High
$190.55

Where Massachusetts sits

The same service costs 3.2 times more in South Dakota 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.

Massachusetts· 21st of 51

$158

SD $309KY $95.50

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.