HCPCS Code L1832: Knee Orthosis, Adjustable Knee Joints (Unicentric or Polycentric), Positional Orthosis, Rigid Support, Prefabricated

L1832 is a prefabricated knee orthosis that requires substantial modification by a clinician or technician (e.g., trimming, bending, molding, or assembling) to properly fit the patient. By contrast, L1833 is off-the-shelf, requiring only minimal self-adjustment (such as tightening straps) and no significant modification by the supplier. Both may be used for conditions such as a right tibia initial encounter or closed fracture nondisplaced, but the choice depends on the patient’s medical needs.

Yes. Medicare generally covers L1832 when medical necessity is documented, such as for instability, ligament injuries, or fractures like a closed fracture displaced of the lower end or a right knee initial encounter. The documentation must demonstrate why a simpler device (e.g., elastic sleeve) is insufficient.

Yes, but correct modifiers are required. Use RT for the right side and LT for the left. If both knees are billed (e.g., when treating sequelae such as a left femur sequela), Medicare usually reimburses the second unit at 50% of the allowable.