2007 ICD-9-CM Procedure 40.41 Radical neck dissection, unilateral 40.41 is a specific code that can be used to specify a procedure 40.41 contains 2 index entries View the full Volume 3 40.* hierarchy Index entries containing 40.41: Dissection -- see also Excision neck, radical 40.40 unilateral 40.41 Excision lymph, lymphatic node (simple) NEC 40.29 cervical (deep) (with excision of scalene fat pad) 40.21 radical (including muscle and deep fascia) 40.40 unilateral 40.41