Summary & Overview
HCPCS L7170: Electronic Elbow (Hosmer or Equal), Switch Controlled
HCPCS Level II code L7170 denotes an electronic elbow component (Hosmer or equivalent), switch controlled, used as part of an upper-extremity prosthesis. Nationally, this code is relevant for prosthetics reimbursement, device procurement, and clinical device selection for patients requiring powered elbow articulation. It represents a specialized durable medical equipment category that can have material cost, fitting, and follow-up service implications across payers.
Key payers included in the analysis are Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise overview of clinical context for the component, typical settings where the device is provided, and what to expect in billing classification. The publication summarizes standard usage scenarios, identifies common modifiers and administrative considerations (where available), and outlines areas where policy updates or payer-specific coverage rules typically affect claims adjudication. This summary is intended to inform billing staff, prosthetists, and policy stakeholders about the purpose of the code, common operational settings for provision, and the payer landscape relevant to national reimbursement and coverage practices.
Billing Code Overview
HCPCS Level II code L7170 describes an electronic elbow, Hosmer or equal, switch controlled. This device is a myoelectric/active prosthetic elbow component designed to provide powered flexion and extension for an upper-extremity prosthesis.
-
Service type: Durable medical equipment / prosthetic component
-
Typical site of service: Prosthetics clinic or outpatient orthotics and prosthetics facility
Clinical & Coding Specifications
Clinical Context
A 58-year-old patient with a below-elbow amputation presents for fitting of an electronic elbow prosthetic component, described as an electronic elbow, Hosmer or equal, switch controlled (L7170). The workflow begins with a prosthetist evaluation in an outpatient prosthetics clinic or hospital-based orthotics and prosthetics department. The prosthetist documents residual limb status, range of motion of the shoulder and contralateral elbow, skin condition, and functional goals. Tracing and casting or a digital scan of the residual limb are obtained, followed by prescribed ordering of the L7170 component. Once delivered, the prosthetist performs fitting, alignment, switch placement and control training with the patient, including adjustments for socket interface and switch sensitivity. Typical sites of service include an outpatient prosthetics clinic, hospital outpatient department, or a specialized rehabilitation facility where device delivery, adjustments, and patient training occur. Follow-up visits evaluate fit, function, skin integrity, and need for modifiers reflecting bilateral fittings, unusual procedural complexity, or professional/technical components of associated services.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
11 | Office or other outpatient visit for evaluation and management |