A4238 – Supply allowance for adjunctive, non-implanted continuous glucose monitor (cgm), includes all supplies and accessories, 1 month supply = 1 unit of service

HCPCS Level II code · A codes: Transportation, Medical & Surgical Supplies, Miscellaneous & Experimental

Active code Carrier judgment

HCPCS codeA4238
Long description
Supply 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
Pricing indicator
34 DME supplies
Medicare coverage
C Carrier judgment – coverage decided by the Medicare contractor
BETOS category
D1E Other DME
Added
April 1, 2022
Last change
January 1, 2023 – No change

Frequently asked questions

What is HCPCS code A4238?

A4238 is a HCPCS Level II code for supply allowance for adjunctive, non-implanted continuous glucose monitor (cgm), includes all supplies and accessories, 1 month supply = 1 unit of service.

Does Medicare cover A4238?

The HCPCS file lists coverage code C: Carrier judgment – coverage decided by the Medicare contractor. Coverage and payment also depend on local coverage determinations and the patient’s plan.

Nearby A codes

Source: CMS HCPCS Level II quarterly file, October 2026. Reference only – check payer policy before billing.