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Adjunctive Nonimplanted Continuous Glucose Monitor Supplies

Illinois rates for HCPCS A4238

Supply allowance for adjunctive, nonimplanted continuous glucose monitor (CGM), includes all supplies and accessories, 1 month supply = 1 unit of service

Rates data updated October 2026.

How much does Adjunctive Nonimplanted Continuous Glucose Monitor Supplies cost?

$162

Typical negotiated rate. In Illinois, October 2026.

Insurers have agreed to pay about $162 for this service. The price depends on where it is billed: about $158 from a physician practice, and about $1,413 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 5 insurance carriers under federal price transparency rules.

Prices by location type

Billed byTypicalRange
Physician practiceA doctor's office, clinic or independent provider$158$145 to $209
FacilityA hospital or hospital-owned outpatient department$1,413$617 to $2,344

How much rates vary

Facilitymedian $1,413 · 10th to 90th $158 to $3,090Professionalmedian $158 · 10th to 90th $145 to $263
$100$200$500$1K$2Kfacility $1,413professional $158

Distribution of negotiated rates across all payers (price axis is log-scale). Small sample; interpret with caution. Need provider-level prices or 24+ months of history? Contact us.

Rates by insurance carrier

Insurance Carrier
Aetna
Setting
Facility
Modifier
None
Typical Low
$117.49
Median
$158.49
Typical High
$251.19
Aetna
Setting
Professional
Modifier
None
Typical Low
$120.23
Median
$158.49
Typical High
$213.80
BCBS Illinois
Setting
Facility
Modifier
None
Typical Low
$741.31
Median
$1,584.89
Typical High
$3,162.28
BCBS Illinois
Setting
Professional
Modifier
None
Typical Low
$208.93
Median
$208.93
Typical High
$208.93
Cigna
Setting
Professional
Modifier
None
Typical Low
$162.18
Median
$162.18
Typical High
$162.18
Hally Health
Setting
Professional
Modifier
None
Typical Low
$151.36
Median
$676.08
Typical High
$676.08
Hally Health
Setting
Facility
Modifier
None
Typical Low
$100.00
Median
$100.00
Typical High
$100.00
United
Setting
Professional
Modifier
None
Typical Low
$144.54
Median
$144.54
Typical High
$354.81

Where Illinois sits

The same service costs 2.1 times more in Montana than in Hawaii. 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.

Illinois· 40th of 51

$162

MT $282HI $135

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.