HCPCS Level II · Transportation, medical and surgical supplies
A4640Replacement pad for use with medically necessary alternating pressure pad owned by patient
✓ Active
Source: CMS HCPCS quarterly update, October 2026. Page updated September 29, 2026.
About A4640
A4640 is an HCPCS Level II code in the A series (transportation, medical and surgical supplies), describing replacement pad for use with medically necessary alternating pressure pad owned by patient.
It was added to HCPCS effective 01/01/1991.
Its Medicare coverage code is "D", meaning special Medicare coverage instructions apply.
Details
- Short description
- Alternating pressure pad
- Date added
- 01/01/1991
- Action effective
- 01/01/1991
- BETOS
- D1E
Related A46xx codes
- A4600Sleeve for intermittent limb compression device, replacement only, each
- A4601Lithium ion battery, rechargeable, for non-prosthetic use, replacement
- A4602Replacement battery for external infusion pump owned by patient, lithium, 1.5 volt, each
- A4604Tubing with integrated heating element for use with positive airway pressure device
- A4605Tracheal suction catheter, closed system, each
- A4606Oxygen probe for use with oximeter device, replacement
- A4608Transtracheal oxygen catheter, each
- A4611Battery, heavy duty; replacement for patient owned ventilator
- A4612Battery cables; replacement for patient-owned ventilator
- A4613Battery charger; replacement for patient-owned ventilator
- A4614Peak expiratory flow rate meter, hand held
- A4615Cannula, nasal
Common questions about A4640
Is HCPCS A4640 still valid?
- Yes. A4640 is active in the CMS October 2026 HCPCS file.
Does Medicare cover A4640?
- Its coverage code is "D": special Medicare coverage instructions apply. Check the local coverage determination for your region.