Summary & Overview
HCPCS L6955: Above-Elbow Externally Powered Myoelectric Prosthesis
HCPCS Level II code L6955 denotes an above-elbow, externally powered myoelectric prosthesis with a molded inner socket, removable humeral shell, internal locking elbow, forearm, electrodes, cables, two batteries, and one charger. This durable medical equipment code is significant nationally as it covers complex upper-extremity prosthetic technology that affects provider billing, payer coverage policies, and patient access to advanced limb replacements.
Key payers typically considered in national analyses include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. This publication summarizes how L6955 is described, the clinical context for its use, and what stakeholders frequently evaluate when covering externally powered upper-extremity prostheses.
Readers will learn: the clinical and device features embodied by the code; typical service setting and who furnishes these devices; common billing and administrative considerations tied to provision of advanced myoelectric prostheses; and where input is not available. Data not available in the input will be noted where applicable. The piece provides a concise reference for payers, prosthetists, and policy analysts seeking a clear, national-level synopsis of HCPCS Level II code L6955.
Billing Code Overview
HCPCS Level II code L6955 describes an above-elbow externally powered prosthesis featuring a molded inner socket, removable humeral shell, internal locking elbow, forearm, and myoelectronic control of the terminal device. The item includes electrodes, cables, two batteries, and one charger, and references manufacturer equivalence such as Otto Bock or equal.
Service type: Prosthetic device provision (upper extremity), externally powered myoelectric prosthesis.
Typical site of service: Outpatient prosthetics clinic or specialty orthotics and prosthetics provider setting.
Clinical & Coding Specifications
Clinical Context
A 42-year-old male with a transhumeral (above-elbow) amputation presents to a prosthetics clinic for provision of an externally powered myoelectric prosthesis. The patient is evaluated by a prosthetist and a physiatrist for socket fit, residual limb condition, and myoelectric control candidacy. Surface electrode sites are mapped on the residual limb to capture viable muscle signals. A molded inner socket and removable humeral shell are fabricated to optimize suspension and comfort. An internal locking elbow and powered forearm/terminal device are integrated, with cables, two rechargeable batteries, and one charger included. The device uses myoelectronic control of the terminal device for grasp and release. The clinical workflow includes initial evaluation, casting or digital scan, socket fitting and alignment, myoelectric control training, delivery of the prosthesis, and follow-up for adjustments and occupational therapy for functional training. Typical site of service is an outpatient prosthetics clinic or specialty orthotics and prosthetics facility; components may require coordination with durable medical equipment suppliers and outpatient therapy services. Typical payer interactions include prior authorization and documentation of functional deficits, trial of alternative devices if required, and detailed notes on electrode mapping and training progress.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
RT | Right side | When the prosthesis is for the right upper extremity |