A4640 – Replacement pad for use with medically necessary alternating pressure pad owned by patient
HCPCS Level II code · A codes: Transportation, Medical & Surgical Supplies, Miscellaneous & Experimental
HCPCS codeA4640
- Long description
- Replacement pad for use with medically necessary alternating pressure pad owned by patient
- Short description
- Alternating pressure pad
- Pricing indicator
32DME – inexpensive & routinely purchased- Medicare coverage
DSpecial coverage instructions apply- BETOS category
D1EOther DME- Added
- January 1, 1991
- Last change
- January 1, 1991 – No change
Frequently asked questions
What is HCPCS code A4640?
A4640 is a HCPCS Level II code for replacement pad for use with medically necessary alternating pressure pad owned by patient.
Does Medicare cover A4640?
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
- A4630 – Replacement batteries, medically necessary, transcutaneous electrical stimulator, owned by patient
- A4633 – Replacement bulb/lamp for ultraviolet light therapy system, each
- A4634 – Replacement bulb for therapeutic light box, tabletop model
- A4635 – Underarm pad, crutch, replacement, each
- A4636 – Replacement, handgrip, cane, crutch, or walker, each
- A4637 – Replacement, tip, cane, crutch, walker, each.
- A4638 – Replacement battery for patient-owned ear pulse generator, each
- A4639 – Replacement pad for infrared heating pad system, each
- A4641 – Radiopharmaceutical, diagnostic, not otherwise classified
- A4642 – Indium in-111 satumomab pendetide, diagnostic, per study dose, up to 6 millicuries
- A4648 – Tissue marker, implantable, any type, each
- A4649 – Surgical supply; miscellaneous
- A4650 – Implantable radiation dosimeter, each
- A4651 – Calibrated microcapillary tube, each
- A4652 – Microcapillary tube sealant
- A4653 – Peritoneal dialysis catheter anchoring device, belt, each
Source: CMS HCPCS Level II quarterly file, October 2026. Reference only – check payer policy before billing.