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Chemistry Test For A Specific Substance

Massachusetts rates for HCPCS 84285

A laboratory chemistry test that measures how much of one particular substance is present in a sample sent to the lab. It is ordered when the amount of that substance is expected to answer a specific question about a person's health, and the result is read together with the rest of the picture.

Rates data updated October 2026.

How much does Chemistry Test For A Specific Substance cost?

$27.54

Typical negotiated rate. In Massachusetts, October 2026.

Insurers have agreed to pay about $27.54 for this service. The price depends on where it is billed: about $25.12 from a physician practice, and about $35.48 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 9 insurance carriers under federal price transparency rules.

Prices by location type

Billed byTypicalRange
Physician practiceA doctor's office, clinic or independent provider$25.12$19.95 to $38.02
FacilityA hospital or hospital-owned outpatient department$35.48$25.12 to $58.88

How much rates vary

Facilitymedian $35 · 10th to 90th $21 to $83Professionalmedian $25 · 10th to 90th $12 to $71
$10$100$1Kfacility $35professional $25

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
$20.42
Median
$22.39
Typical High
$104.71
Aetna
Setting
Professional
Modifier
None
Typical Low
$22.39
Median
$22.39
Typical High
$26.92
AllWays Health Partners
Setting
Facility
Modifier
None
Typical Low
$19.05
Median
$27.54
Typical High
$77.62
AllWays Health Partners
Setting
Professional
Modifier
None
Typical Low
$10.00
Median
$25.12
Typical High
$63.10
BCBS Massachusetts
Setting
Facility
Modifier
None
Typical Low
$33.11
Median
$57.54
Typical High
$100.00
BCBS Massachusetts
Setting
Professional
Modifier
None
Typical Low
$23.44
Median
$24.55
Typical High
$30.20
Cigna
Setting
Facility
Modifier
None
Typical Low
$16.60
Median
$34.67
Typical High
$61.66
Cigna
Setting
Professional
Modifier
None
Typical Low
$16.22
Median
$30.90
Typical High
$97.72
Fallon Health
Setting
Facility
Modifier
None
Typical Low
$33.88
Median
$42.66
Typical High
$4,897.79
Fallon Health
Setting
Professional
Modifier
None
Typical Low
$35.48
Median
$35.48
Typical High
$42.66
Harvard Pilgrim
Setting
Professional
Modifier
None
Typical Low
$10.00
Median
$25.12
Typical High
$91.20
Mass General Brigham
Setting
Facility
Modifier
None
Typical Low
$19.05
Median
$27.54
Typical High
$77.62
Mass General Brigham
Setting
Professional
Modifier
None
Typical Low
$10.00
Median
$25.12
Typical High
$63.10
United
Setting
Facility
Modifier
None
Typical Low
$25.12
Median
$25.12
Typical High
$83.18
United
Setting
Professional
Modifier
None
Typical Low
$3.16
Median
$15.14
Typical High
$52.48
Well Sense
Setting
Facility
Modifier
None
Typical Low
$22.39
Median
$27.54
Typical High
$43.65
Well Sense
Setting
Professional
Modifier
None
Typical Low
$24.55
Median
$24.55
Typical High
$29.51
3 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
$11.22
Median
$11.22
Typical High
$13.49
Aetna
Setting
Professional
Modifier
53 · Discontinued
Typical Low
$4.47
Median
$4.47
Typical High
$5.37
Fallon Health
Setting
Facility
Modifier
QW · Waived lab test
Typical Low
$25.12
Median
$33.11
Typical High
$38.90

Where Massachusetts sits

The same service costs 3.5 times more in Kansas than in Alabama. 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· 19th of 51

$27.54

KS $57.54AL $16.22

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.