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description: "HCPCS code A4239: Supply allowance for non-adjunctive, non-implanted continuous glucose monitor. Category, related codes, and the official source, in plain…"
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# A4239 Supply allowance for non-adjunctive, non-implanted continuous glucose monitor

HCPCS · [CMS code reference](#source)

**Official HCPCS description:** Supply allowance for non-adjunctive, non-implanted continuous glucose monitor (cgm), includes all supplies and accessories, 1 month supply = 1 unit of service

## Related codes

-   [`A4206` Syringe with needle, sterile, 1 cc or less, each HCPCS](https://billingbrief.com/hcpcs/a4206/)
-   [`A4253` Blood glucose test or reagent strips for home blood glucose monitor, per 50 strips HCPCS](https://billingbrief.com/hcpcs/a4253/)
-   [`A4258` Spring-powered device for lancet, each HCPCS](https://billingbrief.com/hcpcs/a4258/)
-   [`A4259` Lancets, per box of 100 HCPCS](https://billingbrief.com/hcpcs/a4259/)
-   [`A4550` Surgical trays HCPCS](https://billingbrief.com/hcpcs/a4550/)
-   [`A4570` Splint HCPCS](https://billingbrief.com/hcpcs/a4570/)

## From the source

Official description from [CMS](https://www.cms.gov/medicare/coding-billing/healthcare-common-procedure-system).
HCPCS Level II, October 2026 quarterly file.

Code set

HCPCS

Short name

Non-adju cgm supply allow

Section

Transportation, medical and surgical supplies

Added to HCPCS

2023-01-01

Educational reference only. Not medical, legal, or billing advice. Always check the current official code set and payer policy before you bill. [About BillingBrief and our sources](https://billingbrief.com/about/).