CPT® Code 69100

A biopsy of the external ear, designated by CPT® Code 69100, involves the surgical removal of a tissue sample from the external ear, which includes the auricle (also known as the pinna). This procedure is typically indicated when there is a lesion present that requires further examination to determine its nature. The process begins with the cleansing of the skin over the biopsy site using a disinfectant to minimize the risk of infection. Following this, a tissue sample is excised, ensuring that both the lesion and a margin of normal tissue are included to provide adequate material for pathological analysis. The biopsy site may either be closed with sutures or left open to granulate, depending on the specific circumstances of the procedure and the preference of the healthcare provider. It is important to note that this code specifically pertains to biopsies of the external ear, distinguishing it from related procedures such as those involving the external auditory canal, which is covered under a different code (CPT® Code 69105). In the latter, an otoscopic examination is performed to identify the lesion, and the procedure may involve additional steps such as packing the ear canal with sterile gauze after obtaining the tissue sample.