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Blood Phosphorus (Phosphate) Test

North Carolina rates for HCPCS 84100

Measures the amount of phosphate, a mineral the body uses for bone strength, energy production and cell function, in a blood sample. Levels drift when the kidneys are not clearing phosphate properly, when the parathyroid glands are over- or under-active, or when vitamin D is out of balance, so it is usually read alongside calcium. Measuring phosphate in a urine sample is a separate test.

Rates data updated October 2026.

How much does Blood Phosphorus (Phosphate) Test cost?

$3.80

Typical negotiated rate. In North Carolina, October 2026.

Insurers have agreed to pay about $3.80 for this service. The price depends on where it is billed: about $3.80 from a physician practice, and about $5.01 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 6 insurance carriers under federal price transparency rules.

Prices by location type

Billed byTypicalRange
Physician practiceA doctor's office, clinic or independent provider$3.80$3.09 to $4.79
FacilityA hospital or hospital-owned outpatient department$5.01$3.80 to $10.00

How much rates vary

Facilitymedian $5 · 10th to 90th $4 to $17Professionalmedian $4 · 10th to 90th $2 to $7
$2$5$10$20facility $5professional $4

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
$3.80
Median
$4.47
Typical High
$11.22
Aetna
Setting
Professional
Modifier
None
Typical Low
$3.72
Median
$3.80
Typical High
$6.61
Aetna
Setting
Professional
Modifier
52 · Reduced service
Typical Low
$1.91
Median
$1.91
Typical High
$2.04
Aetna
Setting
Professional
Modifier
53 · Discontinued
Typical Low
$0.76
Median
$0.76
Typical High
$0.81
Ambetter
Setting
Professional
Modifier
None
Typical Low
$1.20
Median
$2.34
Typical High
$10.47
BCBS North Carolina
Setting
Facility
Modifier
None
Typical Low
$7.94
Median
$14.79
Typical High
$20.89
BCBS North Carolina
Setting
Professional
Modifier
None
Typical Low
$2.14
Median
$2.14
Typical High
$3.09
Cigna
Setting
Facility
Modifier
None
Typical Low
$3.31
Median
$10.72
Typical High
$21.38
Cigna
Setting
Professional
Modifier
None
Typical Low
$2.51
Median
$3.24
Typical High
$7.76
Medcost
Setting
Professional
Modifier
None
Typical Low
$3.98
Median
$6.03
Typical High
$8.71
Medcost
Setting
Facility
Modifier
None
Typical Low
$3.72
Median
$3.80
Typical High
$10.00
Medcost
Setting
Professional
Modifier
None
Typical Low
$3.80
Median
$6.76
Typical High
$8.91
United
Setting
Professional
Modifier
None
Typical Low
$2.00
Median
$3.31
Typical High
$6.46

Where North Carolina sits

The same service costs 11.7 times more in Vermont than in Maryland. 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.

North Carolina· 46th of 51

$3.80

VT $41.69MD $3.55

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.