CPT® Code 31320

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A laryngotomy, also known as a thyrotomy or laryngofissure, is a surgical procedure that involves making an incision in the larynx, which is the voice box located in the throat. This procedure is primarily performed to access the larynx for diagnostic or therapeutic purposes. The term 'laryngotomy' refers to the act of cutting into the larynx, while 'thyrotomy' specifically indicates an incision through the thyroid cartilage, which is the prominent cartilage that forms the structure of the larynx. During the procedure, a careful incision is made in the skin over the thyroid cartilage, and the cartilage is then split in the midline using an oscillating saw. This allows for direct exposure of the larynx, enabling the surgeon to identify and excise any tumors, cystic dilations such as laryngoceles, or affected vocal cords. In cases where the vocal cords are involved, a cordectomy may be performed, which entails the complete removal of the vocal cord along with a margin of healthy tissue to ensure complete excision of any disease. The procedure concludes with the closure of the surgical wound in the larynx using sutures. The CPT® Code 31320 is specifically designated for instances where a diagnostic laryngotomy is performed, allowing for inspection of the larynx to identify any diseases or abnormalities present.