CPT® Code 69105

A biopsy of the external auditory canal (EAC) is a medical procedure that involves the removal of a tissue sample from the external ear for diagnostic purposes. The external ear, which includes the auricle (also known as the pinna), is the visible part of the ear that collects sound waves and channels them into the ear canal. During this procedure, the skin over the biopsy site is first cleansed with a disinfectant to minimize the risk of infection. An otoscopic examination is conducted to identify any lesions present in the EAC, which is also referred to as the external acoustic meatus. Once the lesion is located, a specialized operating head is attached to the otoscope, allowing for the introduction of surgical instruments through the speculum. A tissue sample is then carefully excised, which may consist of various types of tissues, including skin, soft tissue, cartilage, and potentially bone. After the biopsy is performed, the site may either be closed with sutures or left open to heal naturally through granulation. Additionally, the ear canal may be packed with sterile gauze to provide support and absorb any drainage. This procedure is essential for diagnosing conditions affecting the external auditory canal and ensuring appropriate treatment is administered based on the pathological findings.