CPT® Code 42104

The procedure described by CPT® Code 42104 involves the excision of a lesion located on the palate or uvula, which are critical components of the oral cavity. The palate serves as the roof of the mouth and is divided into two parts: the hard palate, which is bony and forms the anterior section, and the soft palate, which is muscular and forms the posterior section. The uvula, a small conical structure, extends from the soft palate and is made up of connective tissue, racemose glands, and muscular fibers. During this procedure, a thorough examination of the roof of the mouth is conducted to identify the lesion present on the palate or uvula. Once the lesion is located, a margin of healthy tissue surrounding it is determined to ensure complete excision. An incision is then made through the mucosa and submucosa, encircling the lesion to facilitate its removal. After excising the lesion, it is sent to a laboratory for histologic evaluation, which is reported separately. It is important to note that this procedure is coded as 42104 when the surgical wound is intentionally left open to heal by secondary intention, as opposed to other codes that apply when the wound is closed using different techniques.