2007 ICD-9-CM Procedure 42.10 Esophagostomy, not otherwise specified Surgical formation of an external opening (stoma) into the esophagus. 42.10 is a specific code that can be used to specify a procedure 42.10 contains 2 index entries View the full Volume 3 42.* hierarchy Index entries containing 42.10: Esophagostomy 42.10 cervical 42.11 thoracic 42.19 Fistulization esophagus, external 42.10 cervical 42.11 specified technique NEC 42.19