A4556 – Electrodes, (e.g., apnea monitor), per pair
HCPCS Level II code · A codes: Transportation, Medical & Surgical Supplies, Miscellaneous & Experimental
HCPCS codeA4556
- Long description
- Electrodes, (e.g., apnea monitor), per pair
- Short description
- Electrodes, pair
- Pricing indicator
34DME supplies- Medicare coverage
CCarrier judgment – coverage decided by the Medicare contractor- BETOS category
D1EOther DME- Added
- January 1, 1984
- Last change
- January 1, 2000 – No change
Frequently asked questions
What is HCPCS code A4556?
A4556 is a HCPCS Level II code for electrodes, (e.g., apnea monitor), per pair.
Does Medicare cover A4556?
The HCPCS file lists coverage code C: Carrier judgment – coverage decided by the Medicare contractor. Coverage and payment also depend on local coverage determinations and the patient’s plan.
Nearby A codes
- A4542 – Supplies and accessories for external upper limb tremor stimulator of the peripheral nerves of the wrist
- A4543 – Supplies for transcutaneous electrical nerve stimulator, for nerves in the auricular region, per month
- A4544 – Electrode for external lower extremity nerve stimulator for restless legs syndrome
- A4545 – Supplies and accessories for external tibial nerve stimulator (e.g., socks, gel pads, electrodes, etc.), needed for one month
- A4550 – Surgical trays
- A4553 – Non-disposable underpads, all sizes
- A4554 – Disposable underpads, all sizes
- A4555 – Electrode/transducer for use with electrical stimulation device used for cancer treatment, replacement only
- A4557 – Lead wires, (e.g., apnea monitor), per pair
- A4558 – Conductive gel or paste, for use with electrical device (e.g., tens, nmes), per oz
- A4559 – Coupling gel or paste, for use with ultrasound device, per oz
- A4560 – Neuromuscular electrical stimulator (nmes), disposable, replacement only
- A4561 – Pessary, reusable, rubber, any type
- A4562 – Pessary, reusable, non rubber, any type
- A4563 – Rectal control system for vaginal insertion, for long term use, includes pump and all supplies and accessories, any type each
- A4564 – Pessary, disposable, any type
Source: CMS HCPCS Level II quarterly file, October 2026. Reference only – check payer policy before billing.