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Adjunctive Nonimplanted Continuous Glucose Monitor Supplies

North Carolina 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?

$209

Typical negotiated rate. In North Carolina, October 2026.

Insurers have agreed to pay about $209 for this service. Most negotiated rates run $174 to $245.

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.

How much rates vary

Facilitymedian $288 · 10th to 90th $245 to $427Professionalmedian $209 · 10th to 90th $145 to $251
$100$200facility $288professional $209

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
$245.47
Median
$245.47
Typical High
$245.47
Aetna
Setting
Professional
Modifier
None
Typical Low
$199.53
Median
$245.47
Typical High
$245.47
BCBS North Carolina
Setting
Professional
Modifier
None
Typical Low
$204.17
Median
$208.93
Typical High
$263.03
Cigna
Setting
Professional
Modifier
None
Typical Low
$162.18
Median
$162.18
Typical High
$162.18
Medcost
Setting
Facility
Modifier
None
Typical Low
$288.40
Median
$426.58
Typical High
$426.58
Medcost
Setting
Professional
Modifier
None
Typical Low
$251.19
Median
$251.19
Typical High
$426.58
United
Setting
Professional
Modifier
None
Typical Low
$107.15
Median
$144.54
Typical High
$173.78
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
Medcost
Setting
Professional
Modifier
51 · Multiple procedures
Typical Low
$125.89
Median
$125.89
Typical High
$245.47

Where North Carolina 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.

North Carolina· 24th of 51

$209

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.