HCPCS code A4253: Blood glucose test strips for home use

Better understand how to properly use and bill for HCPCS code A4253 with our short guide that has a list of documentation and billing requirements.

Use Code

## **What is HCPCS code A4253?** HCPCS code A4253 is used for single-use blood glucose test or reagent strips, for a blood glucose monitor, per 50 strips. These strips are intended for patients managing diabetes and checking their blood glucose levels using a portable blood glucose meter. Test strips allow patients to perform capillary blood glucose testing at home, supporting self-monitoring of blood glucose (SMBG) for insulin dosing or glycemic control. A4253 supplies are often necessary for patients requiring multiple tests daily, particularly those on insulin therapy or with poorly controlled diabetes. Medicare Part B and many state Medicaid programs cover A4253 when patients meet criteria such as insulin-treated diabetes or documented need for frequent testing. The code represents only the strip supply, not associated devices or training.

## **A4253 documentation requirements** To justify payment for blood glucose test strips and other related diabetic supplies, your documentation must establish medical necessity. Here are some key documentation requirements: - Physician's orders: Detailed written order including all items to be dispensed, frequency of testing based on the patient's medical condition, and clinical diagnosis (e.g., diabetes mellitus). - Medical record: Medical record containing documentation from the treating physician supporting the need for the supplies, which includes physician history/physical, progress note, treatment plan, and patient education on strip use. - Proof of delivery: Supplier records must include date of dispensing, quantity, and NDC.

## **A4253 billing requirements** Billing for A4253 requires careful attention to detail to ensure accurate reimbursement. This means that one has to consider the following guidelines: - A4253 is billed per 50-count supply unit. Providers must adhere to payer quantity limits per coverage guidelines. - NDC and prescription details should accompany the claim. - Modifiers may be required for waived or non‑covered items.

## **Other relevant codes** - A4239: Supply allowance for therapeutic non‑adjunctive CGM, 1 month - A4250: Urine test or reagent strips or tablets

Frequently asked questions

Yes, HCPCS code A4253 is covered by Medicare when the patient meets the criteria for using a home blood glucose monitor, which includes being diagnosed with diabetes. The supplies must also be considered "reasonable and necessary" for the patient's treatment.

If a patient requires more test strips than the standard limits, additional documentation from the treating physician is necessary. This documentation must justify the medical need for a higher testing frequency.

No, you cannot. A common billing error is to bill the same number of units for both test strips (A4253) and lancets (A4259). One unit of A4253 is 50 strips, while one unit of A4259 is 100 lancets. Always bill the correct number of units for each code based on the quantity supplied.