Lithium Batteries - Correct Coding - Revised - JD DME

DME MAC Joint Publication
Posted October 30, 2025

The DME MACs have received questions regarding the proper billing of lithium batteries. There are two types of lithium batteries: lithium batteries (standard) and lithium-ion batteries. Lithium-ion batteries are commonly used in consumer electronic devices and are rechargeable. Standard lithium batteries are disposable, non-rechargeable batteries. Suppliers must take care to properly distinguish between lithium-ion and lithium batteries when billing claims to Medicare.

The following HCPCS codes are used to correctly code lithium batteries:

A4235 - REPLACEMENT BATTERY, LITHIUM, FOR USE WITH MEDICALLY NECESSARY HOME BLOOD GLUCOSE MONITOR OWNED BY PATIENT, EACH

A4601 - LITHIUM ION BATTERY, RECHARGEABLE, FOR NON-PROSTHETIC USE, REPLACEMENT

A4602 - REPLACEMENT BATTERY FOR EXTERNAL INFUSION PUMP OWNED BY PATIENT, LITHIUM, 1.5 VOLT, EACH

E2397 - POWER WHEELCHAIR ACCESSORY, LITHIUM-BASED BATTERY, EACH

K0604 - REPLACEMENT BATTERY FOR EXTERNAL INFUSION PUMP OWNED BY PATIENT, LITHIUM, 3.6 VOLT, EACH

K0605 - REPLACEMENT BATTERY FOR EXTERNAL INFUSION PUMP OWNED BY PATIENT, LITHIUM, 4.5 VOLT, EACH

L7367 - LITHIUM ION BATTERY, RECHARGEABLE, REPLACEMENT

Code A4235 describes a lithium battery, not a lithium-ion battery. This code is used to bill lithium batteries for glucose monitors, regardless of the voltage.

Codes A4602, K0604, and K0605 describe lithium batteries commonly used in external infusion pumps. Note that each code has an associated voltage.

Claims for lithium batteries for external insulin infusion pumps (E0784) that do not use a voltage described by code A4602, K0604, or K0605 must be billed using code A9999 (MISCELLANEOUS DME SUPPLY OR ACCESSORY, NOT OTHERWISE SPECIFIED).

Code A4601 describes any lithium-ion rechargeable battery used with a speech generating device or related accessory.

Code E2397 describes lithium-ion batteries used for a power mobility device (K0800-K0898) or a power assist system (E0986).

Code L7367 describes lithium-ion batteries for prosthetics.

Refer to the contractor Supplier Manual, applicable Local Coverage Determination, LCD-related Policy Article, and Standard Documentation Requirements for All Claims Submitted to DME MACs Article for additional information about applicable coverage, coding, and documentation requirements.

Pricing, Data Analysis and Coding (PDAC) HCPCS Helpline at (877) 735-1326 during the hours of 9:30 a.m. to 5:00 p.m. ET, Monday through Friday. You may also visit the PDAC website to chat with a representative or select the Contact Us button at the top of the PDAC website for email, FAX, or postal mail information.

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