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Adjunctive Nonimplanted Continuous Glucose Monitor Supplies

Michigan 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?

$219

Typical negotiated rate. In Michigan, October 2026.

Insurers have agreed to pay about $219 for this service. The price depends on where it is billed: about $219 from a physician practice, and about $224 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 7 insurance carriers under federal price transparency rules.

Prices by location type

Billed byTypicalRange
Physician practiceA doctor's office, clinic or independent provider$219$191 to $263
FacilityA hospital or hospital-owned outpatient department$224$219 to $275

How much rates vary

Facilitymedian $224 · 10th to 90th $191 to $1,023Professionalmedian $219 · 10th to 90th $145 to $275
$100$200$500$1K$2Kfacility $224professional $219

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
$218.78
Median
$218.78
Typical High
$223.87
Aetna
Setting
Professional
Modifier
None
Typical Low
$218.78
Median
$245.47
Typical High
$245.47
BCBS Michigan
Setting
Facility
Modifier
None
Typical Low
$275.42
Median
$275.42
Typical High
$2,137.96
BCBS Michigan
Setting
Professional
Modifier
None
Typical Low
$263.03
Median
$275.42
Typical High
$275.42
CareSource
Setting
Professional
Modifier
None
Typical Low
$234.42
Median
$323.59
Typical High
$331.13
Cigna
Setting
Professional
Modifier
None
Typical Low
$162.18
Median
$162.18
Typical High
$162.18
Health Alliance Plan
Setting
Facility
Modifier
None
Typical Low
$190.55
Median
$190.55
Typical High
$190.55
Health Alliance Plan
Setting
Professional
Modifier
None
Typical Low
$190.55
Median
$190.55
Typical High
$190.55
Health Alliance Plan
Setting
Professional
Modifier
KF · Class III device
Typical Low
$154.88
Median
$181.97
Typical High
$281.84
Priority Health
Setting
Professional
Modifier
None
Typical Low
$162.18
Median
$162.18
Typical High
$162.18
United
Setting
Professional
Modifier
None
Typical Low
$120.23
Median
$144.54
Typical High
$194.98
1 more rate 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
BCBS Michigan
Setting
Professional
Modifier
RR · Rental
Typical Low
$275.42
Median
$275.42
Typical High
$275.42

Where Michigan 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.

Michigan· 21st of 51

$219

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.