CPT® Code 47001

Add-On Code

Biopsy of liver, needle; when done for indicated purpose at time of other major procedure (List separately in addition to code for primary procedure)

The procedure described by CPT® Code 47001 refers to a biopsy of the liver performed using a needle technique. This procedure is specifically indicated when it is conducted for an appropriate medical purpose concurrently with another major surgical procedure. Prior to the biopsy, the skin over the liver area is thoroughly cleansed to minimize the risk of infection, and a local anesthetic is administered to ensure patient comfort during the procedure. The biopsy involves the use of a percutaneous needle technique, which means that the needle is inserted through the skin directly into the liver to obtain a tissue sample. To enhance the accuracy of the biopsy, imaging guidance may be employed, which can include ultrasound, fluoroscopy, computed tomography (CT), or magnetic resonance imaging (MRI). These imaging techniques assist in precisely locating the abnormal tissue within the liver that requires sampling. It is important to note that this procedure is reported separately from the primary procedure being performed, particularly when it is done through an existing abdominal incision during that primary procedure. The use of a large-bore needle or a spring-loaded biopsy gun is common in this context to facilitate the withdrawal of the liver tissue sample effectively.