A4594 – Neuromodulation stimulator system, adjunct to rehabilitation therapy regime, mouthpiece each

HCPCS Level II code · A codes: Transportation, Medical & Surgical Supplies, Miscellaneous & Experimental

Active code Carrier judgment

HCPCS codeA4594
Long description
Neuromodulation stimulator system, adjunct to rehabilitation therapy regime, mouthpiece each
Short description
Neuromod adj rehab mouthpie
Pricing indicator
32 DME – inexpensive & routinely purchased
Medicare coverage
C Carrier judgment – coverage decided by the Medicare contractor
BETOS category
D1E Other DME
Added
April 1, 2024
Last change
January 1, 2025 – No change

Frequently asked questions

What is HCPCS code A4594?

A4594 is a HCPCS Level II code for neuromodulation stimulator system, adjunct to rehabilitation therapy regime, mouthpiece each.

Does Medicare cover A4594?

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

Source: CMS HCPCS Level II quarterly file, October 2026. Reference only – check payer policy before billing.