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Adjunctive Nonimplanted Continuous Glucose Monitor Supplies

Massachusetts 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 Massachusetts, October 2026.

Insurers have agreed to pay about $240 for this service. The price depends on where it is billed: about $240 from a physician practice, and about $389 from a hospital or other facility.

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 9 insurance carriers under federal price transparency rules.

Prices by location type

Billed byTypicalRange
Physician practiceA doctor's office, clinic or independent provider$240$148 to $282
FacilityA hospital or hospital-owned outpatient department$389$282 to $813

How much rates vary

Facilitymedian $389 · 10th to 90th $263 to $3,467Professionalmedian $240 · 10th to 90th $145 to $1,445
$100$200$500$1K$2K$5Kfacility $389professional $240

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
Facility
Modifier
None
Typical Low
$173.78
Median
$173.78
Typical High
$173.78
Aetna
Setting
Professional
Modifier
None
Typical Low
$173.78
Median
$173.78
Typical High
$181.97
AllWays Health Partners
Setting
Facility
Modifier
None
Typical Low
$263.03
Median
$275.42
Typical High
$891.25
AllWays Health Partners
Setting
Professional
Modifier
None
Typical Low
$144.54
Median
$281.84
Typical High
$1,445.44
BCBS Massachusetts
Setting
Facility
Modifier
None
Typical Low
$302.00
Median
$380.19
Typical High
$512.86
BCBS Massachusetts
Setting
Professional
Modifier
None
Typical Low
$234.42
Median
$234.42
Typical High
$257.04
Cigna
Setting
Professional
Modifier
None
Typical Low
$162.18
Median
$162.18
Typical High
$223.87
Fallon Health
Setting
Facility
Modifier
None
Typical Low
$83.18
Median
$3,630.78
Typical High
$9,772.37
Harvard Pilgrim
Setting
Professional
Modifier
None
Typical Low
$107.15
Median
$239.88
Typical High
$269.15
Mass General Brigham
Setting
Facility
Modifier
None
Typical Low
$263.03
Median
$275.42
Typical High
$891.25
Mass General Brigham
Setting
Professional
Modifier
None
Typical Low
$144.54
Median
$281.84
Typical High
$1,445.44
United
Setting
Professional
Modifier
None
Typical Low
$95.50
Median
$144.54
Typical High
$269.15
Well Sense
Setting
Facility
Modifier
None
Typical Low
$2,511.89
Median
$3,467.37
Typical High
$5,128.61
Well Sense
Setting
Professional
Modifier
None
Typical Low
$2,511.89
Median
$2,511.89
Typical High
$3,019.95
3 more rates 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
AllWays Health Partners
Setting
Professional
Modifier
KF · Class III device
Typical Low
$263.03
Median
$275.42
Typical High
$295.12
Mass General Brigham
Setting
Professional
Modifier
KF · Class III device
Typical Low
$263.03
Median
$275.42
Typical High
$295.12
Well Sense
Setting
Facility
Modifier
KF · Class III device
Typical Low
$269.15
Median
$338.84
Typical High
$630.96

Where Massachusetts 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.

Massachusetts· 14th 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.