2007 ICD-9-CM Procedure 51 Operations on gallbladder and biliary tract 51 is a non-specific code that should not be used to specify a procedure View the full Volume 3 51.* hierarchy Code also any application or administration of an adhesion barrier substance (99.77) 51 includes: operations on: ampulla of Vater common bile duct cystic duct hepatic duct intrahepatic bile duct sphincter of Oddi