A4542 — Supplies and accessories for external upper limb tremor stimulator of the peripheral nerves of the wrist
A4542 is a HCPCS Level II code for supplies and accessories for external upper limb tremor stimulator of the peripheral nerves of the wrist. It belongs to the Transportation, Medical & Surgical Supplies, Administrative section. Whether Medicare pays it depends on the coverage rule below.
Medicare coverage: Carrier judgment
Coverage is decided by your Medicare contractor, not by national policy. Whether this is paid depends on the LCD for your jurisdiction and on what the documentation supports.
From the coverage field of the CMS Alpha-Numeric HCPCS File, release 2026Q3-Jul. This states Medicare’s position on the code, not on your particular claim.
Physician fee schedule statusX
Statutory exclusion. The item or service is not within the statutory definition of 'physician services', so the fee schedule never pays it.
Global period: XXX
Want the dollar amount for your locality? The fee calculator applies your GPCI and the current conversion factor.
The CMS record for A4542
- Long descriptor
- Supplies and accessories for external upper limb tremor stimulator of the peripheral nerves of the wrist
- Short descriptor
- Supp ext up limb tremor stim
- Added
- January 1, 2024
- BETOS
- D1E
- Pricing indicator
- 34 — DMEPOS
The official wording. This is what the code means.
CMS's 28-character form, which is what shows up on a remittance advice.
When CMS introduced the code.
Berenson-Eggers Type of Service — CMS's own analytic grouping.
DME supplies. Price subject to floors and ceilings.
Codes adjacent to A4542
HCPCS has no hierarchy — related items simply sit next to each other in the numbering. If A4542 is not quite right, the correct code is very often within a few positions of it.
- A4483Moisture exchanger, disposable, for use with invasive mechanical ventilation
- A4490Surgical stockings above knee length, each
- A4495Surgical stockings thigh length, each
- A4500Surgical stockings below knee length, each
- A4510Surgical stockings full length, each
- A4520Incontinence garment, any type, (e.g., brief, diaper), each
- A4540Distal transcutaneous electrical nerve stimulator, stimulates peripheral nerves of the upper arm
- A4541Monthly supplies for use of device coded at e0733
- A4543Supplies for transcutaneous electrical nerve stimulator, for nerves in the auricular region, per month
- A4544Electrode for external lower extremity nerve stimulator for restless legs syndrome
- A4545Supplies and accessories for external tibial nerve stimulator (e.g., socks, gel pads, electrodes, etc.), needed for one month
- A4550Surgical trays
- A4553Non-disposable underpads, all sizes
- A4554Disposable underpads, all sizes
- A4555Electrode/transducer for use with electrical stimulation device used for cancer treatment, replacement only
- A4556Electrodes, (e.g., apnea monitor), per pair
Questions about A4542
What is HCPCS code A4542?
A4542 is a HCPCS Level II code for supplies and accessories for external upper limb tremor stimulator of the peripheral nerves of the wrist. It sits in the Transportation, Medical & Surgical Supplies, Administrative section.
Does Medicare cover A4542?
The CMS HCPCS file marks A4542 as "Carrier judgment". Coverage is decided by your Medicare contractor, not by national policy. Whether this is paid depends on the LCD for your jurisdiction and on what the documentation supports.
How is A4542 paid under the physician fee schedule?
A4542 carries PFS status code X. Statutory exclusion. The item or service is not within the statutory definition of 'physician services', so the fee schedule never pays it.