Summary & Overview
HCPCS L6655: Upper Extremity Addition, Standard Control Cable, Extra
HCPCS Level II code L6655 designates an upper extremity prosthetic add-on: a standard control cable provided as an extra component. This code matters nationally because precise coding for prosthetic components affects coverage determinations, billing accuracy, and claims adjudication across major public and private payers. Proper use of L6655 supports reimbursement for additional mechanical components that may be medically necessary for upper-limb prosthesis function.
Key payers covered in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. The publication summarizes payer coverage patterns and national benchmarks where available, and highlights clinical context for when an extra standard control cable may be supplied as part of prosthetic fitting or follow-up care.
Readers will learn how the code is defined and used in billing workflows, the typical sites of service for supplying this durable medical equipment accessory, and the common modifiers associated with prosthetic component billing. The piece also outlines what information is available and where input is limited: when specific payer policies or fee schedules are not provided in the input, those data points are noted as not available. This summary is intended for billing professionals, prosthetists, and policy analysts seeking a concise national overview of L6655 and its role in prosthetic device billing and coverage.
Billing Code Overview
HCPCS Level II code L6655 describes an upper extremity addition, standard control cable, extra. This item is an add-on component used with an upper-limb prosthetic device to provide an additional standard control cable for prosthesis operation.
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Service type: Durable medical equipment accessory for upper extremity prosthesis
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Typical site of service: Outpatient settings, prosthetics supplier offices, and specialty orthotic/prosthetic clinics
Clinical & Coding Specifications
Clinical Context
A patient with an existing myoelectric or body-powered upper extremity prosthesis presents to a prosthetics clinic requiring an additional standard control cable for the prosthetic socket or terminal device. Typical patients include adults or pediatric patients with a transradial or transhumeral amputation who have experienced wear, breakage, loss, or need for an extra control cable to support alternate devices. The clinical workflow begins with prosthetist evaluation of prosthesis function, inspection of the cable routing and anchor points, verification of component compatibility, and measurement for cable length and attachment hardware. The prosthetist documents the need for an additional cable (L6655), orders the replacement/addition, fits and secures the cable to the appropriate control mechanism (e.g., wrist unit, hook, or hand), tests range of motion and control tension, and provides patient education on care and troubleshooting. Follow-up visits may be scheduled for adjustment or to address complications such as fraying, loss of function, or fit changes related to residual limb volume fluctuations.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
00 | Default/No modifier | When no modifier is applicable and no special circumstances apply. |