HCPCS Q0502: Mobility Cart for Pneumatic Ventricular Assist Device, Replacement Only - OpenPayer

Summary & Overview

HCPCS Q0502: Mobility Cart for Pneumatic Ventricular Assist Device, Replacement Only

HCPCS Level II code Q0502 covers replacement of a mobility cart designed for pneumatic ventricular assist devices (VADs). Mobility carts are critical accessories that enable safe transport, positioning, and operation of pneumatic VADs used in advanced heart failure management; having a distinct replacement code clarifies billing for component lifecycle events and equipment maintenance. Nationally, clear coding for VAD accessories supports consistent claims processing and device management across hospital and durable medical equipment supply chains.

Key payers covered in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise overview of clinical context for the mobility cart, typical sites of service where replacement occurs, and which payers are commonly involved in coverage decisions. The publication also outlines benchmarks and policy considerations related to billing for replacement durable medical equipment, highlights common modifiers used with related HCPCS Level II codes, and explains implications for claims processing and documentation.

This summary is intended for national audiences involved in hospital billing, durable medical equipment supply, cardiac device programs, and payer policy teams. Data not available in the input will be identified where applicable.

AetnaBlue Cross Blue ShieldCigna HealthUnitedHealthcareMedicareQ0502HCPCS Level IIVentricular Assist DeviceDurable Medical EquipmentMobility CartDevice ReplacementHospital BillingClaims Processing

Billing Code Overview

HCPCS Level II code Q0502 describes a mobility cart for pneumatic ventricular assist device, replacement only. This code represents billing for the replacement component of a mobility cart used specifically with pneumatic ventricular assist devices (VADs).

Service type: Durable medical equipment replacement for a mobility cart supporting a pneumatic VAD
Typical site of service: Hospital inpatient or outpatient settings, durable medical equipment suppliers, or specialized cardiac device repair and maintenance facilities

Data not available in the input.

Clinical & Coding Specifications

Clinical Context

A typical patient is an adult with a pneumatic ventricular assist device (VAD) who requires replacement of the mobility cart that supports the external pneumatic drive console. The patient presents during an outpatient durable medical equipment (DME) visit or during a home health or hospital discharge planning encounter when the existing mobility cart is damaged, lost, or no longer serviceable. The clinical workflow includes verification of the VAD device model and compatibility, assessment by a VAD coordinator or DME specialist, documentation of need for replacement (device failure, safety concerns, or inability to transport the controller), authorization and billing for the replacement mobility cart (Q0502), delivery and setup in the patient’s home or discharge area, and brief training on safe transport and storage of the pneumatic VAD console. Typical sites of service include home health visits, hospital outpatient DME distribution, inpatient discharge coordination, and specialized durable medical equipment suppliers.

Coding Specifications

Modifier	Description	When to Use
`NU`	New equipment	Use when the mobility cart is a first-time or new replacement delivered to the patient.
`RR`

HCPCS Q4303: Complete aa, Per Square Centimeter (Add-On)

HCPCS-Q5105-EPOETIN-ALFA-EPBX-RETACRIT-ESRD-DIALYSIS-INJECTION-100U

HCPCS Q5105: Epoetin alfa-epbx (Retacrit) Injection, 100 Units

HCPCS-Q4389-NEOTHELIUM-PER-SQ-CM-ADD-ON

HCPCS Q4389: Neothelium 4l+ per Square Centimeter (Add-on)

HCPCS-Q5122-PEGFILGRASTIM-APGF-NYVEPRIA-0-5-MG-INJECTION

HCPCS Q5122: Injection, pegfilgrastim-apgf (Nyvepria), 0.5 mg

HCPCS-Q0174-THIETHYLPERAZINE-ORAL-ANTI-EMETIC-CHEMOTHERAPY-SUBSTITUTE

HCPCS Q0174: Thiethylperazine 10 mg Oral Anti-emetic, Chemotherapy Substitute

HCPCS-Q9954-ORAL-MRI-CONTRAST-AGENT-PER-100ML

HCPCS Q9954: Oral Magnetic Resonance Contrast Agent, per 100 ml

HCPCS-Q4048-PEDIATRIC-SHORT-LEG-FIBERGLASS-SPLINT

HCPCS Q4048: Pediatric Short Leg Fiberglass Splint

HCPCS-Q4183-SURGIGRAFT-PER-SQ-CM-ADD-ON

HCPCS Q4183: Surgigraft, per square centimeter (add-on)

HCPCS-Q0478-VEHICLE-POWER-ADAPTER-VENTRICULAR-ASSIST-DEVICE

HCPCS Q0478: Power Adapter for Vehicle Use with Ventricular Assist Device

HCPCS-Q5103-INFLIXIMAB-DYYB-INFLECTRA-10MG-INJECTION

HCPCS Q5103: Injection, infliximab-dyyb (Inflectra), 10 mg

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Taxonomy Code	Specialty	Notes
261QM0800X	Cardiac Electrophysiology	VAD coordinators and cardiac specialists overseeing device therapy.
207RC0000X	Cardiothoracic Surgery	Surgeons who implant and manage VAD recipients; involved in device-related equipment decisions.
334P00000X	Cardiology	Heart failure cardiologists who manage VAD patients and order related durable medical equipment.
332B0000X	Durable Medical Equipment Supplier	Suppliers who dispense and service mobility carts for VAD consoles.
364S00000X	Home Health Care	Clinicians coordinating home delivery and setup for VAD equipment.

Related Diagnoses

ICD-10 Code	Description	Clinical Relevance
`Z99.811`	Dependence on implanted ventricular assist device	Directly indicates VAD dependence and supports medical necessity for mobility cart replacement to maintain device function and patient portability.
`I50.21`	Acute systolic (congestive) heart failure	Heart failure patients with VAD support may present with device-related equipment needs during acute management or transition of care.
`I50.22`	Chronic systolic (congestive) heart failure	Chronic heart failure patients on VAD support require durable equipment for ongoing device management.
`Z45.2`	Encounter for adjustments and management of ventricular assist device	Captures encounters related to device management, including equipment replacement.
`T82.898A`	Other mechanical complication of other cardiac device, initial encounter	Used when the mobility cart replacement is necessitated by mechanical issues affecting the external drive or support equipment.

Related CPT Codes

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	Used when a clinic visit documents need for replacement of the mobility cart and orders the DME item.
`99341`	Home visit for an established patient, low complexity	Used when a home health clinician evaluates the VAD system and arranges delivery and setup of the replacement cart.
`99070`	Supplies and materials (except spectacles), provided by physician over and above those usually included with the office visit or procedure	May be used to bill for additional non-standard supplies or installation materials associated with the mobility cart when payer policy permits.
`94799`	Unlisted pulmonary service or procedure (example for specialized ventilator/VAD-related services)	Rarely used for complex, nonstandard device support services when no specific code exists; documentation must justify billing.
`A9270`	Noncovered item or service (example DME supply code)	Used by some suppliers for reporting non-covered DME items; applicability depends on payer and coverage policy.

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