CPT® Code 21079

An interim obturator prosthesis, designated by CPT® Code 21079, is a specialized dental device created following the surgical resection of a portion or the entirety of one or both maxillae. This prosthesis serves a critical role in the rehabilitation of patients who have undergone such surgical procedures, as it not only replaces the surgical obturator used during the immediate postoperative phase but also addresses functional and aesthetic needs. The interim obturator may include the replacement of teeth in the defect area, thereby restoring the patient's ability to chew and swallow effectively. It is typically worn for several months, allowing for continued wound healing and adaptation to the changes in oral anatomy. The primary function of the interim obturator is to separate the oral and nasal cavities, which is essential for normal speech and swallowing. Additionally, it provides occlusion with the mandible, supports the mandible, and contributes to a cosmetically acceptable appearance. The process of creating this prosthesis involves obtaining an impression of the defect and surrounding oral structures after some healing has occurred post-surgery. This impression is crucial for accurately designing a mold that will be used to construct the custom prosthesis. In contrast, a definitive obturator prosthesis, identified by CPT® Code 21080, is fabricated once the surgical site has completely healed, ensuring a more permanent solution to the patient's needs.