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Adjunctive Nonimplanted Continuous Glucose Monitor Supplies

Maryland 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 July 2026.

How much does Adjunctive Nonimplanted Continuous Glucose Monitor Supplies cost?

$191

Typical negotiated rate. In Maryland, July 2026.

Insurers have agreed to pay about $191 for this service. Most negotiated rates run $151 to $224.

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.

How much rates vary

Facilitymedian $282 · 10th to 90th $240 to $282Professionalmedian $191 · 10th to 90th $141 to $251
$200facility $282professional $191

Distribution of negotiated rates across all payers (price axis is log-scale). Each curve is scaled to its own total: facility and professional rates are different services, shown together to compare where they cluster. Small sample; interpret with caution. Need provider-level prices or 24+ months of history? Contact us.

Rates by insurance carrier

Insurance Carrier
Aetna
Setting
Professional
Modifier
Global
Typical Low
$141.25
Median
$194.98
Typical High
$245.47
CareFirst
Setting
Professional
Modifier
Global
Typical Low
$213.80
Median
$213.80
Typical High
$213.80
Cigna
Setting
Professional
Modifier
Global
Typical Low
$162.18
Median
$162.18
Typical High
$162.18
Kaiser Permanente
Setting
Professional
Modifier
Global
Typical Low
$288.40
Median
$338.84
Typical High
$436.52
United
Setting
Facility
Modifier
Global
Typical Low
$239.88
Median
$281.84
Typical High
$281.84
United
Setting
Professional
Modifier
Global
Typical Low
$144.54
Median
$144.54
Typical High
$239.88
Wellpoint
Setting
Professional
Modifier
Global
Typical Low
$239.88
Median
$269.15
Typical High
$269.15

Where Maryland sits

The same service costs 1.9 times more in Oregon than in Oklahoma. 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.

Maryland· 33rd of 51

$191

OR $275OK $145

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.