Summary & Overview
HCPCS K0043: Footrest Lower Extension Tube, Replacement
HCPCS Level II code K0043 designates a replacement component: the footrest lower extension tube for mobility or seating devices. This DME component code matters nationally because replacement parts are integral to maintaining safe, functional assistive equipment and can affect claims processing, coverage determinations, and patient mobility continuity. Payers commonly address coverage, documentation, and allowable billing for individual replacement parts separately from full device purchases.
Key payers discussed include 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 coverage considerations under major commercial and federal payers, and practical billing considerations such as service line classification and coding alignment. The publication summarizes benchmarks where available, highlights policy points that influence reimbursement for replacement DME components, and outlines the operational context billing teams need to submit accurate claims.
This resource is intended for billing professionals, DME suppliers, and policy analysts seeking a national perspective on how a component replacement HCPCS Level II code is used and interpreted across major payers. It does not prescribe clinical action or offer individualized coverage determinations.
Billing Code Overview
HCPCS Level II code K0043 represents a replacement footrest lower extension tube, billed per unit as "Footrest, lower extension tube, replacement only, each." The service is an ancillary durable medical equipment component replacement intended to restore or maintain the function of a mobility or seating device footrest assembly.
Service type: Durable Medical Equipment (DME) component replacement
Typical site of service: DME supplier, outpatient clinic, or other non‑inpatient setting where mobility or seating equipment is serviced or furnished.
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Clinical & Coding Specifications
Clinical Context
A patient who uses a durable medical equipment wheelchair presents to a mobility clinic because the footrest lower extension tube on their wheelchair is worn, bent, or broken and requires replacement. The wheelchair user may be an older adult with mobility impairment, a person with spinal cord injury, or a patient with neuromuscular disease who relies on a powered or manual wheelchair for activities of daily living. A clinician or DME technician evaluates the wheelchair to confirm that the specific component — the footrest lower extension tube — is damaged and that replacement of this single component is sufficient rather than replacement of the entire footrest assembly.
The clinical workflow includes device inspection and documentation of the part requiring replacement, verification of wheelchair make/model and part compatibility, ordering of the replacement part K0043 (Footrest, lower extension tube, replacement only, each), and scheduling for technician installation or patient-directed replacement. The claim for K0043 is submitted by the durable medical equipment supplier or repair vendor with supporting documentation of the component failure and, when required by payer policy, photos or technician notes confirming that only the lower extension tube is being replaced and not the entire footrest or seating subsystem.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
LT |