Sentinel lymph node biopsy "allows sampling of the lymph node or nodes that receive drainage directly from a tumor or an area of carcinoma," according to Medicare guidelines. In other words, such biopsies allow the surgeon to determine whether a cancer has spread to the most likely lymphatic drainage area or if it is contained at the primary location. If the sentinel lymph node is negative for metastases, the surgeon need not perform a complete axillary lymphadenectomy.
Learn more: For complete information on sentinel node biopsy, see General Surgery Coding Alert June 2003, "Visualize Better Payment for Sentinel Node Biopsy Procedures," and July 2003, "Want to Improve Coding Accuracy for Sentinel Node Biopsies? Count Incisions, Not Excisions."