2007 ICD-9-CM Procedure 34.1 Incision of mediastinum 34.1 is a specific code that can be used to specify a procedure 34.1 contains 5 index entries View the full Volume 3 34.* hierarchy 34.1 excludes: mediastinoscopy (34.22) mediastinotomy associated with pneumonectomy (32.5) Index entries containing 34.1: Exploration -- see also Incision mediastinum 34.1 endoscopic 34.22 Incision (and drainage) hematoma -- see also Incision, by site mediastinum 34.1 mediastinum 34.1 Mediastinotomy 34.1 with pneumonectomy 32.5 Removal -- see also Excision foreign body NEC -- see also Incision, by site 98.20 mediastinum 34.1