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Adjunctive Nonimplanted Continuous Glucose Monitor Supplies

Missouri 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?

$240

Typical negotiated rate. In Missouri, October 2026.

Insurers have agreed to pay about $240 for this service. Most negotiated rates run $162 to $263.

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 $525 · 10th to 90th $141 to $1,445Professionalmedian $240 · 10th to 90th $145 to $363
$100$200$500$1Kfacility $525professional $240

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
$112.20
Median
$263.03
Typical High
$263.03
Aetna
Setting
Professional
Modifier
None
Typical Low
$112.20
Median
$162.18
Typical High
$263.03
Anthem BCBS
Setting
Professional
Modifier
None
Typical Low
$204.17
Median
$239.88
Typical High
$316.23
Cigna
Setting
Professional
Modifier
None
Typical Low
$162.18
Median
$162.18
Typical High
$162.18
Medica
Setting
Facility
Modifier
None
Typical Low
$144.54
Median
$524.81
Typical High
$1,445.44
Medica
Setting
Professional
Modifier
None
Typical Low
$120.23
Median
$204.17
Typical High
$1,412.54
United
Setting
Professional
Modifier
None
Typical Low
$104.71
Median
$144.54
Typical High
$263.03
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 Kansas City
Setting
Professional
Modifier
KF · Class III device
Typical Low
$169.82
Median
$169.82
Typical High
$281.84

Where Missouri 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.

Missouri· 12th of 51

$240

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.