Summary & Overview
HCPCS L5822: Endoskeletal Knee-Shin Addition, Single-Axis Pneumatic Swing
HCPCS Level II code L5822 denotes an addition to an endoskeletal knee-shin orthotic system: a single-axis knee with pneumatic swing phase control and friction stance phase control. This component is used to manage knee dynamics for patients requiring lower-limb orthotic support, improving controlled swing and stability during stance. Nationally, orthotic component codes like L5822 are important for standardizing coverage and payment for advanced knee-shin devices that can affect mobility outcomes and post-acute care costs.
Key payers referenced include Aetna, Blue Cross Blue Shield, Cigna, UnitedHealthcare, and Medicare. Readers will find an overview of clinical context for the device, descriptions of typical service locations, and what to expect in billing practice for orthotic component additions. The publication outlines common modifiers and payer considerations, provides benchmarking guidance where available, and summarizes policy and documentation elements that influence coverage decisions.
This summary is intended for clinicians, orthotists, billing professionals, and policy analysts seeking a concise reference to the clinical role and billing context of HCPCS Level II code L5822, including national payer presence and operational considerations for device provision and claims processing.
Billing Code Overview
HCPCS Level II code L5822 describes an addition to an endoskeletal knee-shin orthotic system featuring a single-axis knee joint with pneumatic swing phase control and friction stance phase control. The entry represents a component added to an existing endoskeletal lower-limb orthosis to modulate knee behavior during gait.
Service type: Orthotic component addition (knee-shin system)
Typical site of service: Outpatient orthotics/prosthetics clinic or durable medical equipment provider setting, where orthotists fit, adjust, and deliver orthotic knee-shin components to patients with lower-limb weakness or gait instability.
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Clinical & Coding Specifications
Clinical Context
A typical patient is a unilateral transtibial (below-knee) amputee who presents for prosthetic component upgrade to an endoskeletal knee-shin assembly with single-axis knee, pneumatic swing control and friction stance-phase control indicated by functional mobility limitations (difficulty controlling swing and stability during stance) with their current prosthesis. The workflow begins with a prosthetist evaluation documenting height, weight, residual limb status, functional K-level, activity goals, and gait deviations. A prescription is written by the treating physician or physiatrist specifying addition of an endoskeletal knee-shin system with the features described (L5822). The patient returns to the prosthetic clinic for ordering, fitting, alignment, and initial gait training. Adjustments and documentation of component serial numbers, alignment changes, and functional outcome measures (e.g., 10-meter walk, Timed Up and Go) are recorded. Typical follow-up visits assess comfort, skin integrity of the residual limb, and component function; maintenance or minor repairs are performed as needed. The typical site of service is an outpatient prosthetics clinic or orthotics and prosthetics facility; fittings and adjustments may also occur in a hospital-based prosthetic service or inpatient rehabilitation unit when provided during a rehabilitation admission.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
11 | Prime surgeon |