A4238 HCPCS Level II code: Supply allowance for adjunctive, non-implanted continuous glucose monitor (cgm), includes all supplies and accessories, 1 month supply = 1 unit of service
A4238 is the HCPCS code for “Supply allowance for adjunctive, non-implanted continuous glucose monitor (cgm), includes all supplies and accessories, 1 month supply = 1 unit of service” in CMS’s October 2026 release, in effect from Oct 1, 2026.
Official description
A4238Supply allowance for adjunctive, non-implanted continuous glucose monitor (cgm), includes all supplies and accessories, 1 month supply = 1 unit of service
Short description: Adju cgm supply allowance
HCPCS · United States
Medicare details
The indicators CMS publishes with A4238 in its October 2026 file. They describe Medicare’s handling, not another payer’s.
- Medicare coverage
- Carrier judgment
- Medicare pricing
- DMEPOS fee schedule – DME supplies (price subject to floors and ceilings)
- Type of service
- Other medical items or services
- BETOS category
- Other DME
- Added
- Apr 1, 2022
Where A4238 sits
- 1A codesAmbulance, supplies and miscellaneous
- 2Active code A4238Supply allowance for adjunctive, non-implanted continuous glucose monitor (cgm), includes all supplies and accessories, 1 month supply = 1 unit of service
Source and release
- Data release
- HCPCS Level II · October 2026
- Effective date
- Oct 1, 2026
- Publisher
- CMS
This page is built from the HCPCS Level II catalog that Vero Codes reads when it suggests codes: Centers for Medicare & Medicaid Services’s October 2026 release, imported from the publisher’s file and checked against it. The description, notes and structured data come from the same record.
Frequently asked questions
What does HCPCS code A4238 mean?
A4238 is the HCPCS code for “Supply allowance for adjunctive, non-implanted continuous glucose monitor (cgm), includes all supplies and accessories, 1 month supply = 1 unit of service” in CMS’s HCPCS Level II October 2026 release.
Does Medicare cover A4238?
CMS lists A4238’s Medicare coverage as “Carrier judgment” and its pricing as “DMEPOS fee schedule – DME supplies (price subject to floors and ceilings)”. Coverage and payment still depend on the patient, the setting, the documentation and the payer.
Which HCPCS Level II release does this page use?
It uses CMS’s October 2026 release, in effect from Oct 1, 2026 to Dec 31, 2026. It is a reference: confirm the code against the current list and the payer’s rules before you submit it.
Codes beside A4238
All A codesA4231Infusion set for external insulin pump, needle typeA4232Syringe with needle for external insulin pump, sterile, 3 ccA4233Replacement battery, alkaline (other than j cell), for use with medically necessary home blood glucose monitor owned by patient, eachA4234Replacement battery, alkaline, j cell, for use with medically necessary home blood glucose monitor owned by patient, eachA4235Replacement battery, lithium, for use with medically necessary home blood glucose monitor owned by patient, eachA4236Replacement battery, silver oxide, for use with medically necessary home blood glucose monitor owned by patient, eachA4239Supply allowance for non-adjunctive, non-implanted continuous glucose monitor (cgm), includes all supplies and accessories, 1 month supply = 1 unit of serviceA4244Alcohol or peroxide, per pintA4245Alcohol wipes, per boxA4246Betadine or phisohex solution, per pintA4247Betadine or iodine swabs/wipes, per boxA4248Chlorhexidine containing antiseptic, 1 ml