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Adjunctive Nonimplanted Continuous Glucose Monitor Supplies

Washington, DC 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?

$214

Typical negotiated rate. In Washington, DC, July 2026.

Insurers have agreed to pay about $214 for this service. Most negotiated rates run $174 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 5 insurance carriers under federal price transparency rules.

How much rates vary

Facilitymedian $224 · 10th to 90th $224 to $224Professionalmedian $200 · 10th to 90th $145 to $240
$100$200facility $224professional $200

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
Facility
Modifier
Global
Typical Low
$223.87
Median
$223.87
Typical High
$223.87
Aetna
Setting
Professional
Modifier
Global
Typical Low
$144.54
Median
$223.87
Typical High
$234.42
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
$309.03
Median
$323.59
Typical High
$616.60
United
Setting
Professional
Modifier
Global
Typical Low
$95.50
Median
$151.36
Typical High
$251.19

Where Washington, DC 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.

Washington, DC· 13th of 51

$214

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.