A4231 – Infusion set for external insulin pump, needle type
HCPCS Level II code · A codes: Transportation, Medical & Surgical Supplies, Miscellaneous & Experimental
HCPCS codeA4231
- Long description
- Infusion set for external insulin pump, needle type
- Short description
- Infusion insulin pump needle
- Pricing indicator
34DME supplies- Medicare coverage
DSpecial coverage instructions apply- BETOS category
D1EOther DME- Added
- January 1, 1996
- Last change
- January 1, 2000 – No change
Frequently asked questions
What is HCPCS code A4231?
A4231 is a HCPCS Level II code for infusion set for external insulin pump, needle type.
Does Medicare cover A4231?
The HCPCS file lists coverage code D: Special coverage instructions apply. Coverage and payment also depend on local coverage determinations and the patient’s plan.
Nearby A codes
- A4221 – Supplies for maintenance of non-insulin drug infusion catheter, per week (list drugs separately)
- A4222 – Infusion supplies for external drug infusion pump, per cassette or bag (list drugs separately)
- A4223 – Infusion supplies not used with external infusion pump, per cassette or bag (list drugs separately)
- A4224 – Supplies for maintenance of insulin infusion catheter, per week
- A4225 – Supplies for external insulin infusion pump, syringe type cartridge, sterile, each
- A4226 – Supplies for maintenance of insulin infusion pump with dosage rate adjustment using therapeutic continuous glucose sensing, per week
- A4228 – Supplies for maintenance of non-insulin, device-drug combination infusion catheter, per week
- A4230 – Infusion set for external insulin pump, non needle cannula type
- A4232 – Syringe with needle for external insulin pump, sterile, 3 cc
- A4233 – Replacement battery, alkaline (other than j cell), for use with medically necessary home blood glucose monitor owned by patient, each
- A4234 – Replacement battery, alkaline, j cell, for use with medically necessary home blood glucose monitor owned by patient, each
- A4235 – Replacement battery, lithium, for use with medically necessary home blood glucose monitor owned by patient, each
- A4236 – Replacement battery, silver oxide, for use with medically necessary home blood glucose monitor owned by patient, each
- A4238 – Supply allowance for adjunctive, non-implanted continuous glucose monitor (cgm), includes all supplies and accessories, 1 month supply = 1 unit of service
- A4239 – Supply allowance for non-adjunctive, non-implanted continuous glucose monitor (cgm), includes all supplies and accessories, 1 month supply = 1 unit of service
- A4244 – Alcohol or peroxide, per pint
Source: CMS HCPCS Level II quarterly file, October 2026. Reference only – check payer policy before billing.