HCPCS Code L3924: Hand Finger Orthosis (HFO), Without Joints, May Include Soft Interface, Straps, Prefabricated, Off-the-shelf

Learn how to bill HCPCS Code L3924 for hand finger orthosis (HFO) without joints, prefabricated, off-the-shelf with Medicare guidelines.

Use Code

Frequently asked questions

HCPCS code L3924 describes a hand finger orthosis (HFO) without joints, which is prefabricated and off-the-shelf. It may include a soft interface, straps, and other ready-made components used to support and protect the fingers, thumb, MCP joint, and wrist.

Proper documentation must show medical necessity (e.g., soft tissue injury, fracture, instability), that the orthosis is without joints and prefabricated/off-the-shelf, details on fitting and adjustments (straps, padding), and how the device aids the patient’s functional recovery. Records must comply with Medicare Program Integrity Manual and DME MAC guidelines.

Yes, the CG modifier is required if the orthosis includes rigid plastic or metal components. Also, left (LT) and right (RT) modifiers should be used when applicable. Claims without proper modifiers may be rejected.