CGM & Diabetic SuppliesA4239CGM Monthly Supplies
Your monthly allotment of CGM sensors and supplies — for systems whose readings you can act on directly, without a confirming fingerstick.
What to expect
- Filled as a monthly supply — sensors plus the accessories your system uses.
- Covers standalone systems such as Dexcom or FreeStyle Libre; we confirm your exact system before filling.
- We help you set up refills so you don't run out between months.
For providers (HCPCS A4239)
- HCPCS A4239: supply allowance for non-adjunctive, non-implanted CGM; includes all supplies and accessories, 1 unit of service = 1 month.
- For systems classified non-adjunctive (readings used directly for treatment decisions).
- DWO + supporting documentation; coverage and unit rules vary by payer.
- Coverage varies by payer — DWO and supporting documentation required.



