Summary & Overview
HCPCS L5812: Endoskeletal Knee-Shin Safety Knee
HCPCS Level II code L5812 denotes an addition to an endoskeletal knee-shin orthosis: a single-axis, friction-controlled safety knee that manages swing and stance phases. This code captures a specific orthotic component used to improve knee stability and gait function for individuals requiring lower-limb support. Nationally, precise coding for orthotic components matters for access to appropriate devices, consistent claims processing, and clinical documentation linking device function to mobility needs.
Key payers addressed include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare and Medicare. The publication outlines what L5812 represents clinically, where and how the device is typically supplied and used, and the administrative considerations impacting coverage and billing.
Readers will learn benchmark elements relevant to this orthotic component, policy and coverage considerations from major payers, clinical context for device selection and documentation expectations, and common billing scenarios. Where input data is missing, such as specific payer policies or associated taxonomies and diagnosis codes, the report states "Data not available in the input."
Billing Code Overview
HCPCS Level II code L5812 describes an addition to an endoskeletal knee-shin orthosis featuring a single-axis, friction swing and stance phase control (safety knee). This device component is designed to provide controlled knee motion and stability for ambulation when attached to an endoskeletal lower-limb orthosis system.
Service Type: Orthotic addition — knee-shin system component
Typical Site of Service: Outpatient orthotics or prosthetics clinic, durable medical equipment supplier setting, or ambulatory rehabilitation facility
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Clinical & Coding Specifications
Clinical Context
A typical patient is an adult with transfemoral or transtibial limb loss who uses an endoskeletal prosthesis and requires a single-axis safety knee to provide controlled swing and stance-phase stability. The patient often presents at a prosthetics clinic for component upgrade, replacement, or initial fitting following amputation rehabilitation. A certified prosthetist assesses gait, residual limb shape and volume, activity level, and fall risk, then documents medical necessity for a L5812 addition to the prosthetic foot/ankle/shaft assembly. The clinical workflow includes evaluation (history, functional mobility assessment, balance testing), selection of the single-axis friction knee component, trial alignment in the fabrication lab, fitting and alignment appointment, gait training with physical therapy, and follow-up visits for adjustments and documentation of functional gains and skin integrity. Typical settings are outpatient prosthetics clinics, rehabilitation hospitals, and home health services for mobility training when indicated.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
LT | Left side | When the addition is for the left lower extremity prosthesis |
RT |