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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 October 2026.

How much does Adjunctive Nonimplanted Continuous Glucose Monitor Supplies cost?

$214

Typical negotiated rate. In Maryland, October 2026.

Insurers have agreed to pay about $214 for this service. Most negotiated rates run $158 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

Professionalmedian $214 · 10th to 90th $145 to $269
$200professional $214

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
Professional
Modifier
None
Typical Low
$144.54
Median
$208.93
Typical High
$223.87
CareFirst
Setting
Professional
Modifier
None
Typical Low
$213.80
Median
$213.80
Typical High
$213.80
Cigna
Setting
Professional
Modifier
None
Typical Low
$162.18
Median
$162.18
Typical High
$162.18
Kaiser Permanente
Setting
Professional
Modifier
None
Typical Low
$295.12
Median
$323.59
Typical High
$436.52
United
Setting
Professional
Modifier
None
Typical Low
$144.54
Median
$144.54
Typical High
$229.09
Wellpoint
Setting
Professional
Modifier
None
Typical Low
$269.15
Median
$269.15
Typical High
$269.15
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
Kaiser Permanente
Setting
Professional
Modifier
KF · Class III device
Typical Low
$269.15
Median
$302.00
Typical High
$416.87

Where Maryland 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.

Maryland· 23rd of 51

$214

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.