CPT® 21100, Under Introduction Procedures on the Head

The Current Procedural Terminology (CPT®) code 21100 as maintained by American Medical Association, is a medical procedural code under the range - Introduction Procedures on the Head.

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A provider applies a halo type appliance to treat maxillofacial defects, which may be congenital in nature or acquired, resulting from trauma, bone growth disturbance, maxillary, or mandibular neoplastic or degenerative processes. The appliance allows for gradual skeletal lengthening and advancement, enabling the skin and soft tissue envelope to adapt to and accommodate the skeletal movement.

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