In simple words: This code describes a special hydraulic part added to an artificial leg, specifically the knee area. It helps the leg swing forward smoothly when walking but needs stronger muscles to use.

This code represents an addition of a fluid swing phase control unit to a single axis endoskeletal knee-shin system. The fluid control unit utilizes hydraulics to manage the swing (extension) phase of gait, not the stance (weight-bearing) phase. It offers a more natural gait but requires increased muscle strength and is heavier than pneumatic systems. The single axis knee joint functions similarly to a hinge, moving back and forth. This addition is designed for endoskeletal prostheses with internal support structures.

Example 1: A patient with a transfemoral amputation requires a more natural gait and has sufficient muscle strength to control a fluid swing phase controlled prosthetic knee. L5824 is billed in addition to the primary prosthetic code., An active patient with a transfemoral amputation who engages in activities requiring variable cadence benefits from the fluid swing control provided by L5824., A patient with a single axis endoskeletal knee-shin system experiences difficulty with the swing phase of their gait. Their physician recommends the addition of a fluid swing phase control (L5824) to improve their gait.

Documentation should support the medical necessity of this addition. It should clearly specify the patient's functional level, the type of prosthesis used, and the rationale for adding a fluid swing phase control. The expected improvement in gait and function must also be documented.