K0605 Replacement Battery HCPCS: Reimbursement & Policy | OpenPayer

Summary & Overview

HCPCS K0605: Replacement Battery for External Infusion Pump, 4.5V

HCPCS Level II code K0605 designates a replacement lithium 4.5-volt battery for a patient-owned external infusion pump. This supply-level HCPCS code matters nationally because it covers a routine but essential component of home and outpatient infusion therapy; proper coding ensures accurate billing and continuity of care for patients reliant on portable infusion devices.

Key payers included in the analysis are Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise overview of the code's clinical context and service setting, typical payer coverage considerations, and the types of benchmarks and policy details commonly reviewed for DME supply codes like K0605.

This publication explains the clinical purpose of the item, the expected site of service (primarily home infusion and outpatient settings), and which payers typically cover such DME supplies. It also outlines the kinds of benchmarks, reimbursement policy updates, and billing nuances that stakeholders track for HCPCS Level II supply codes, and identifies areas where input data was not provided. Data not available in the input: associated taxonomies, ICD-10 diagnoses, related codes, and service-line specifics.

AetnaBlue Cross Blue ShieldCigna HealthUnitedHealthcareMedicareK0605HCPCS Level IIdurable medical equipmentinfusion pump supplyreplacement batteryhome infusionDME billingmedical supplies

Billing Code Overview

HCPCS Level II code K0605 represents a replacement battery for an external infusion pump owned by the patient. The item described is a lithium, 4.5 volt battery, each, intended as a durable medical equipment (DME) supply component used with portable infusion pumps.

Service type: Durable medical equipment supply for infusion pump maintenance and operation.

Typical site of service: Patient-owned device maintenance; supplies are most commonly utilized for home infusion therapy or outpatient settings where patients operate or maintain their own external infusion pumps.

Clinical & Coding Specifications

Clinical Context

A typical patient scenario involves an individual who owns an external ambulatory infusion pump (for example, a portable insulin, pain management, or ambulatory antibiotic infusion pump) presenting for replacement of the pump's primary lithium 4.5-volt battery. The patient reports decreased pump run-time or pump alarms indicating low battery. A trained durable medical equipment (DME) supplier technician or home health nurse confirms the battery type and installs a replacement K0605 battery on-site in the patient’s home or at an outpatient DME clinic. Documentation includes the pump make/model, serial number, battery part number, date of service, and the patient's signature. Typical sites of service are the patient’s residence, a DME supplier location, or an outpatient clinic. The workflow includes verification of medical necessity (ongoing infusion therapy requiring continuous pump operation), confirmation that the battery is patient-owned equipment-compatible, delivery and installation of the replacement battery, and documentation of patient education about battery usage and disposal.

Coding Specifications

The following modifiers are most clinically relevant to billing for a replacement battery (K0605) and are presented with typical use cases.

Modifier	Description	When to Use
`NU`

HCPCS Level II K0855: Power Wheelchair, Extra Heavy Duty, Captain's Chair

HCPCS-K0898-POWER-WHEELCHAIR-NOT-OTHERWISE-CLASSIFIED

HCPCS K0898: Power wheelchair, not otherwise classified

HCPCS-K0801-POWER-OPERATED-VEHICLE-HEAVY-DUTY-301-450-LBS

HCPCS Level II K0801: Power Operated Vehicle, Heavy Duty 301–450 lbs

HCPCS-LEVEL-II-K0608-REPLACEMENT-GARMENT-AED

HCPCS Level II K0608: Replacement Garment for Automated External Defibrillator

HCPCS-K0077-FRONT-CASTER-ASSEMBLY-SOLID-TIRE-REPLACEMENT

HCPCS K0077: Front Caster Assembly with Solid Tire, Replacement

HCPCS-K0860-POWER-WHEELCHAIR-VERY-HEAVY-DUTY-451-600-LB

HCPCS K0860: Power Wheelchair, Very Heavy Duty, 451–600 lb

HCPCS-K0840-POWER-WHEELCHAIR-EXTRA-HEAVY-DUTY-601LBS-PLUS

HCPCS K0840: Power Wheelchair, Extra Heavy Duty (601+ lb)

HCPCS-K0019-ARM-PAD-REPLACEMENT

HCPCS K0019: Arm Pad, Replacement Only, Each

HCPCS-K0822-POWER-WHEELCHAIR-GROUP-2-STANDARD-UP-TO-300LBS

HCPCS K0822: Power Wheelchair Group 2, Sling/Solid Seat, Up to 300 lbs

HCPCS-K0899-POWER-MOBILITY-DEVICE-NOT-CODED-BY-DME-PDAC

HCPCS K0899: Power Mobility Device Not Coded by DME PDAC

Showing 1–10 of 135

Taxonomy Code	Specialty	Notes
`334N00000X`	Medical Equipment Supplier	DME providers who supply and install replacement batteries and document device compatibility.
`251B00000X`	Home Health Agency	Nurses who perform at-home device checks, battery replacement, and patient education.
`363L00000X`	Durable Medical Equipment, Prosthetics, Orthotics & Supplies	Clinical supplier specialty managing ongoing infusion pump supplies and replacements.
`207Q00000X`	Physician Assistant	May document and perform device-related assessments under supervising physician.
`163WP0806X`	Nursing — Wound, Ostomy and Continence/Enterostomal Therapist	In some infusion therapy contexts, nurses who coordinate pumps and supplies.

Related Diagnoses

Common ICD-10 codes associated with external infusion pump use and related battery replacement are listed below.

ICD-10 Code	Description	Clinical Relevance
`E11.9`	Type 2 diabetes mellitus without complications	Patients with insulin pumps may require replacement batteries to maintain continuous subcutaneous insulin infusion.
`E10.9`	Type 1 diabetes mellitus without complications	Insulin pump users with type 1 diabetes commonly require battery replacements to avoid interruptions in insulin delivery.
`G89.3`	Neoplasm related pain (acute)	Patients receiving ambulatory infusion pumps for cancer-related pain management require dependable battery power.
`G89.2`	Chronic pain, not elsewhere classified	Chronic pain managed with infusion pumps (e.g., intrathecal or ambulatory PCA) necessitates timely battery replacement.
`B95.61`	Methicillin susceptible Staphylococcus aureus infection as the cause of diseases classified elsewhere	Infusion therapy complications or infections may require device checks and battery replacement as part of management.

Related CPT Codes

Common CPT codes performed alongside or in support of replacement of an external infusion pump battery include device management, evaluation, and potential pump repair services.

CPT Code	Description	Relationship to This Procedure
`99213`	Office or other outpatient visit for the evaluation and management of an established patient, typically 15 minutes	May be billed when a clinician evaluates pump function and documents the need for battery replacement during an outpatient visit.
`99501`	Home visit for the assessment and management of a patient with a home intravenous therapy/care (example code for home visit; use payer-specific codes where applicable)	May be billed when a nurse visits the patient’s home to replace the battery and manage infusion equipment.
`99070`	Supplies and materials (except spectacles), provided by the physician over and above those usually included with the office visit or other services, each supply	Occasionally used by some payers to bill for supplies; battery supply is typically reported with `K0605` rather than `99070`.
`99091`	Collection and interpretation of physiologic data digitally stored and transmitted by the patient to the physician	Relevant if pump telemetry or remote monitoring data are reviewed in conjunction with device troubleshooting.
`97605`	Negative pressure wound therapy; simple	Not directly related; included only when wound care coincides with infusion therapy management.

OpenPayer