CPT® Code 42806

The procedure described by CPT® Code 42806 involves a biopsy of the nasopharynx, which is the upper section of the pharynx that connects to the nasal passages. This specific biopsy is conducted as a survey for an unknown primary lesion, meaning it is performed when there is an abnormal growth or lesion present in the nasopharynx, but the origin of this lesion is not known. Unlike a simple biopsy, which targets a visible lesion as described in CPT® Code 42804, the biopsy under code 42806 necessitates obtaining a larger tissue sample. This larger sample is crucial for accurately identifying the source of the lesion and for classifying the type of neoplasm present. The procedure typically requires the administration of a general anesthetic to ensure patient comfort and safety during the biopsy process.