Note22  Use the following fifth-digit subclassification with category 201:

                        0          unspecified site
                        1          lymph nodes of head, face, and neck
                        2          intrathoracic lymph nodes
                        3          intra-abdominal lymph nodes
                        4          lymph nodes of axilla and upper limb
                        5          lymph nodes of inguinal region and lower limb
                        6          intrapelvic lymph nodes
                        7          spleen
                        8          lymph nodes of multiple sites