2007 ICD-9-CM Procedure 45.21 Transabdominal endoscopy of large intestine 45.21 is a specific code that can be used to specify a procedure 45.21 contains 5 index entries View the full Volume 3 45.* hierarchy 45.21 also known as: Intraoperative endoscopy of large intestine 45.21 excludes: that with biopsy (45.25) Index entries containing 45.21: Colonoscopy 45.23 intraoperative 45.21 transabdominal 45.21 Endoscopy colon 45.23 transabdominal (operative) 45.21 intestine NEC 45.24 large 45.24 transabdominal (intraoperative) 45.21 Sigmoidoscopy (rigid) 48.23 transabdominal 45.21