HCPCS Code A4638

Replacement battery for patient-owned ear pulse generator, each
Code effective Jan 01, 2004

HCPCS Section
Transportation Services Including Ambulance, Medical & Surgical Supplies

A4638 is a valid 2026 HCPCS code meaning Replacement battery for patient-owned ear pulse generator, each or (Repl batt pulse gen sys) for short. HCPCS A4638 has been effective since 01/01/2004 and applies to Lump sum purchase of DME, prosthetics, orthotics.

HCPCS Code Details - A4638

HCPCS Level II Code
Section A - Transportation Services Including Ambulance, Medical & Surgical Supplies
HCPCS Code A4638
Description

Long description:
Replacement battery for patient-owned ear pulse generator, each

Short description:
Repl batt pulse gen sys

HCPCS Pricing indicator 32 - Inexpensive & routinely purchased DME (price subject to floors and ceilings)
Multiple pricing indicator A - Not applicable as HCPCS priced under one methodology
Coverage code C - Carrier judgment
BETOS2 code D1E - Other DME
HCPCS Action code N - No maintenance for this code
Type of service P - Lump sum purchase of DME, prosthetics, orthotics
Effective date Effective Jan 01, 2004
Date added Added Jan 01, 2004

See also

  • HCPCS A4637 · Replacement, tip, cane, crutch, walker, each.

  • HCPCS A4602 · Replacement battery for external infusion pump owned by patient, lithium, 1.5 volt, each

  • HCPCS K0601 · Replacement battery for external infusion pump owned by patient, silver oxide, 1.5 volt, each

  • HCPCS K0602 · Replacement battery for external infusion pump owned by patient, silver oxide, 3 volt, each

  • HCPCS K0603 · Replacement battery for external infusion pump owned by patient, alkaline, 1.5 volt, each

  • HCPCS K0604 · Replacement battery for external infusion pump owned by patient, lithium, 3.6 volt, each

  • HCPCS K0605 · Replacement battery for external infusion pump owned by patient, lithium, 4.5 volt, each

  • HCPCS K0607 · Replacement battery for automated external defibrillator, garment type only, each

  • HCPCS A4639 · Replacement pad for infrared heating pad system, each

1 Two-digit numeric codes are Level I code modifiers copyrighted© by the American Medical Association's Current Procedural Terminology (CPT).

2 BETOS stands for “Berenson-Eggers Type Of Service”

HCPCS Level II codes and descriptors are approved and maintained jointly by the alpha-numeric editorial panel (consisting of CMS, the Health Insurance Association of America, and the Blue Cross and Blue Shield Association). — Updated 6/23/2026

CPT® is a registered trademark of the American Medical Association (AMA). All rights reserved.