2007 ICD-9-CM Procedure 45.24 Flexible sigmoidoscopy 45.24 is a specific code that can be used to specify a procedure 45.24 contains 4 index entries View the full Volume 3 45.* hierarchy 45.24 also known as: Endoscopy of descending colon 45.24 excludes: rigid proctosigmoidoscopy (48.23) Index entries containing 45.24: Endoscopy intestine NEC 45.24 large 45.24 fiberoptic (flexible) 45.23 through stoma (artificial) 45.22 transabdominal (intraoperative) 45.21 small 45.13 esophagogastroduodenosopy (EGD) 45.13 with closed biopsy 45.16 through stoma (artificial) 45.12 transabdominal (operative) 45.11 Proctosigmoidoscopy (rigid) 48.23 flexible 45.24 Sigmoidoscopy (rigid) 48.23 flexible 45.24