CPT® Code 10009

A fine needle aspiration (FNA) biopsy is a minimally invasive procedure used to collect samples from lesions, which may be cysts or solid masses. This technique is particularly beneficial when traditional open biopsy methods pose risks, such as disrupting surgical planes or causing tumor seeding, especially in cases involving previously treated or irradiated lesions. The procedure utilizes imaging guidance, specifically computed tomography (CT) or magnetic resonance imaging (MRI), to accurately locate and target the lesion for sampling. This is crucial for lesions that are difficult to access or localize through standard methods, such as those found in the abdomen, thorax, or deep-seated areas like the neck. During a CT-guided FNA biopsy, a radiopaque marker is placed over the lesion, and the patient undergoes a series of scans to determine the optimal site for the biopsy. In some instances, intravenous (IV) sedation may be administered to enhance patient comfort. The biopsy site is then prepared using local anesthesia and antiseptic solutions to minimize the risk of infection. A coaxial biopsy guide needle is inserted, followed by a confirmation scan to ensure proper placement. Subsequently, a biopsy gun is attached to the guide needle, which is activated to penetrate the mass and aspirate the necessary sample cells or fluid. The collected specimens are prepared by smearing onto microscope slides, air-dried, fixed, and stained for microscopic examination. This immediate analysis helps determine whether the samples are adequate or if additional biopsies are required. The CPT® code 10009 is designated for the first lesion biopsied using FNA with CT guidance, while additional lesions are coded separately with 10010. For MRI guidance, the first lesion is reported with 10011, and subsequent lesions with 10012.