A4638 HCPCS Level II code: Replacement battery for patient-owned ear pulse generator, each
A4638 is the HCPCS code for “Replacement battery for patient-owned ear pulse generator, each” in CMS’s October 2026 release, in effect from Oct 1, 2026.
Official description
A4638Replacement battery for patient-owned ear pulse generator, each
Short description: Repl batt pulse gen sys
HCPCS · United States
Medicare details
The indicators CMS publishes with A4638 in its October 2026 file. They describe Medicare’s handling, not another payer’s.
- Medicare coverage
- Carrier judgment
- Medicare pricing
- DMEPOS fee schedule – Inexpensive & routinely purchased DME (price subject to floors and ceilings)
- Type of service
- Lump sum purchase of DME, prosthetics, orthotics
- BETOS category
- Other DME
- Added
- Jan 1, 2004
Where A4638 sits
- 1A codesAmbulance, supplies and miscellaneous
- 2Active code A4638Replacement battery for patient-owned ear pulse generator, each
Source and release
- Data release
- HCPCS Level II · October 2026
- Effective date
- Oct 1, 2026
- Publisher
- CMS
This page is built from the HCPCS Level II catalog that Vero Codes reads when it suggests codes: Centers for Medicare & Medicaid Services’s October 2026 release, imported from the publisher’s file and checked against it. The description, notes and structured data come from the same record.
Frequently asked questions
What does HCPCS code A4638 mean?
A4638 is the HCPCS code for “Replacement battery for patient-owned ear pulse generator, each” in CMS’s HCPCS Level II October 2026 release.
Does Medicare cover A4638?
CMS lists A4638’s Medicare coverage as “Carrier judgment” and its pricing as “DMEPOS fee schedule – Inexpensive & routinely purchased DME (price subject to floors and ceilings)”. Coverage and payment still depend on the patient, the setting, the documentation and the payer.
Which HCPCS Level II release does this page use?
It uses CMS’s October 2026 release, in effect from Oct 1, 2026 to Dec 31, 2026. It is a reference: confirm the code against the current list and the payer’s rules before you submit it.
Codes beside A4638
All A codesA4630Replacement batteries, medically necessary, transcutaneous electrical stimulator, owned by patientA4633Replacement bulb/lamp for ultraviolet light therapy system, eachA4634Replacement bulb for therapeutic light box, tabletop modelA4635Underarm pad, crutch, replacement, eachA4636Replacement, handgrip, cane, crutch, or walker, eachA4637Replacement, tip, cane, crutch, walker, each.A4639Replacement pad for infrared heating pad system, eachA4640Replacement pad for use with medically necessary alternating pressure pad owned by patientA4641Radiopharmaceutical, diagnostic, not otherwise classifiedA4642Indium in-111 satumomab pendetide, diagnostic, per study dose, up to 6 millicuriesA4648Tissue marker, implantable, any type, eachA4649Surgical supply; miscellaneous