| Inbound Relationships | Type | Active | Source | Characteristic | Refinability | Group | 
| Entire hepatic duct | Is a | True | Structure of hepatic duct | Inferred relationship | Existential restriction modifier |  | 
| Entire common hepatic duct | Is a | False | Structure of hepatic duct | Inferred relationship | Existential restriction modifier |  | 
| Structure of left hepatic duct | Is a | True | Structure of hepatic duct | Inferred relationship | Existential restriction modifier |  | 
| Structure of right hepatic duct | Is a | True | Structure of hepatic duct | Inferred relationship | Existential restriction modifier |  | 
| Congenital absence of hepatic ducts | Finding site | False | Structure of hepatic duct | Inferred relationship | Existential restriction modifier | 1 | 
| Atresia of hepatic ducts | Finding site | True | Structure of hepatic duct | Inferred relationship | Existential restriction modifier | 1 | 
| Calculus of hepatic duct without obstruction | Finding site | False | Structure of hepatic duct | Inferred relationship | Existential restriction modifier | 1 | 
| Closure of hepatic duct anastomosis | Procedure site | False | Structure of hepatic duct | Inferred relationship | Existential restriction modifier | 3 | 
| Closure of hepatico-duodenostomy | Procedure site | False | Structure of hepatic duct | Inferred relationship | Existential restriction modifier | 1 | 
| Closure of hepatico-enterostomy | Procedure site | False | Structure of hepatic duct | Inferred relationship | Existential restriction modifier | 4 | 
| Closure of hepatico-gastrostomy | Procedure site | False | Structure of hepatic duct | Inferred relationship | Existential restriction modifier | 2 | 
| Suture of hepatic duct | Procedure site | False | Structure of hepatic duct | Inferred relationship | Existential restriction modifier | 1 | 
| Percutaneous transhepatic hepatico-dochoscopy | Procedure site | False | Structure of hepatic duct | Inferred relationship | Existential restriction modifier | 1 | 
| Anastomosis of intrahepatic duct to jejunum | Procedure site | False | Structure of hepatic duct | Inferred relationship | Existential restriction modifier | 1 | 
| Portoenterostomy | Procedure site | False | Structure of hepatic duct | Inferred relationship | Existential restriction modifier | 1 | 
| Kasai procedure | Procedure site | False | Structure of hepatic duct | Inferred relationship | Existential restriction modifier | 1 | 
| Roux-en-Y hepaticojejunostomy | Procedure site | False | Structure of hepatic duct | Inferred relationship | Existential restriction modifier | 1 | 
| Stricture of hepatic duct | Finding site | False | Structure of hepatic duct | Inferred relationship | Existential restriction modifier | 1 | 
| Excision of common hepatic duct | Procedure site | False | Structure of hepatic duct | Inferred relationship | Existential restriction modifier | 1 | 
| Closure of hepatic duct fistula | Procedure site | False | Structure of hepatic duct | Inferred relationship | Existential restriction modifier |  | 
| Hepaticolithotomy | Procedure site | False | Structure of hepatic duct | Inferred relationship | Existential restriction modifier | 1 | 
| Hepatic portoenterostomy | Procedure site | False | Structure of hepatic duct | Inferred relationship | Existential restriction modifier | 1 | 
| Hepatocholangiocystoduodenostomy | Procedure site | False | Structure of hepatic duct | Inferred relationship | Existential restriction modifier | 1 | 
| Anastomosis of hepatic ducts | Procedure site | False | Structure of hepatic duct | Inferred relationship | Existential restriction modifier | 2 | 
| Ascending cholangitis | Finding site | False | Structure of hepatic duct | Inferred relationship | Existential restriction modifier | 1 | 
| Insertion of choledochohepatic tube for decompression | Procedure site | False | Structure of hepatic duct | Inferred relationship | Existential restriction modifier | 1 | 
| Hepatojejunostomy | Procedure site | False | Structure of hepatic duct | Inferred relationship | Existential restriction modifier | 1 | 
| Mirizzi's syndrome | Finding site | False | Structure of hepatic duct | Inferred relationship | Existential restriction modifier | 1 | 
| Hepaticocholangiojejunostomy | Procedure site | False | Structure of hepatic duct | Inferred relationship | Existential restriction modifier | 1 | 
| Resection of hepatic ducts | Procedure site | False | Structure of hepatic duct | Inferred relationship | Existential restriction modifier | 1 | 
| Anastomosis of gallbladder to hepatic ducts | Procedure site | False | Structure of hepatic duct | Inferred relationship | Existential restriction modifier |  | 
| Calculus of hepatic duct | Finding site | False | Structure of hepatic duct | Inferred relationship | Existential restriction modifier | 1 | 
| Calculus of hepatic duct with obstruction | Finding site | False | Structure of hepatic duct | Inferred relationship | Existential restriction modifier | 1 | 
| Hepatoduodenostomy | Procedure site | False | Structure of hepatic duct | Inferred relationship | Existential restriction modifier |  | 
| Longmire operation, bile duct anastomosis | Procedure site | False | Structure of hepatic duct | Inferred relationship | Existential restriction modifier | 1 | 
| Direct anastomosis of intrahepatic ducts and gastrointestinal tract | Procedure site | False | Structure of hepatic duct | Inferred relationship | Existential restriction modifier | 1 | 
| Hepaticocystoduodenostomy | Procedure site | False | Structure of hepatic duct | Inferred relationship | Existential restriction modifier | 1 | 
| Accessory hepatic duct | Finding site | False | Structure of hepatic duct | Inferred relationship | Existential restriction modifier | 1 | 
| Hepatogastrostomy | Procedure site | False | Structure of hepatic duct | Inferred relationship | Existential restriction modifier | 1 | 
| Anastomosis of hepatic duct to gastrointestinal tract | Procedure site | False | Structure of hepatic duct | Inferred relationship | Existential restriction modifier | 1 | 
| Revision of anastomosis of hepatic duct | Procedure site | False | Structure of hepatic duct | Inferred relationship | Existential restriction modifier | 1 | 
| Open dilation of anastomosis of hepatic duct | Procedure site | False | Structure of hepatic duct | Inferred relationship | Existential restriction modifier | 1 | 
| Open insertion of tubal prosthesis into both hepatic ducts and common bile duct | Procedure site | False | Structure of hepatic duct | Inferred relationship | Existential restriction modifier | 2 | 
| Open insertion of tubal prosthesis into one hepatic duct and common bile duct | Procedure site | False | Structure of hepatic duct | Inferred relationship | Existential restriction modifier | 2 | 
| Endoscopic retrograde insertion of tubal prosthesis into both hepatic ducts | Procedure site | False | Structure of hepatic duct | Inferred relationship | Existential restriction modifier | 3 | 
| Percutaneous insertion of tubal prosthesis into both hepatic ducts | Procedure site | False | Structure of hepatic duct | Inferred relationship | Existential restriction modifier | 1 | 
| Malignant neoplasm of hepatic duct | Finding site | False | Structure of hepatic duct | Inferred relationship | Existential restriction modifier | 1 | 
| Benign neoplasm of hepatic duct | Finding site | False | Structure of hepatic duct | Inferred relationship | Existential restriction modifier | 1 | 
| Carcinoma in situ of hepatic duct | Finding site | False | Structure of hepatic duct | Inferred relationship | Existential restriction modifier | 1 | 
| Neoplasm of uncertain behavior of hepatic duct | Finding site | False | Structure of hepatic duct | Inferred relationship | Existential restriction modifier | 1 | 
| Anastomosis of hepatic duct to transposed jejunum and insertion of tubal prosthesis | Procedure site | False | Structure of hepatic duct | Inferred relationship | Existential restriction modifier | 1 | 
| Anastomosis of hepatic duct to jejunum NEC | Procedure site | False | Structure of hepatic duct | Inferred relationship | Existential restriction modifier | 1 | 
| Other specified connection of hepatic duct | Procedure site | False | Structure of hepatic duct | Inferred relationship | Existential restriction modifier | 1 | 
| Connection of hepatic duct NOS | Procedure site | False | Structure of hepatic duct | Inferred relationship | Existential restriction modifier | 1 | 
| Longmire operation, bile duct anastomosis | Procedure site | False | Structure of hepatic duct | Inferred relationship | Existential restriction modifier | 1 | 
| Longmire operation, bile duct anastomosis | Procedure site | False | Structure of hepatic duct | Inferred relationship | Existential restriction modifier | 2 | 
| Hepatic duct dysplasia | Finding site | False | Structure of hepatic duct | Inferred relationship | Existential restriction modifier | 1 | 
| Longmire operation, bile duct anastomosis | Procedure site | False | Structure of hepatic duct | Inferred relationship | Existential restriction modifier | 1 | 
| Longmire operation, bile duct anastomosis | Procedure site | False | Structure of hepatic duct | Inferred relationship | Existential restriction modifier | 2 | 
| Closure of hepatic duct fistula | Procedure site - Indirect | False | Structure of hepatic duct | Inferred relationship | Existential restriction modifier | 1 | 
| Longmire operation, bile duct anastomosis | Procedure site | False | Structure of hepatic duct | Inferred relationship | Existential restriction modifier | 2 | 
| Longmire operation, bile duct anastomosis | Procedure site | False | Structure of hepatic duct | Inferred relationship | Existential restriction modifier | 1 | 
| Closure of hepatic duct anastomosis | Procedure site - Indirect | False | Structure of hepatic duct | Inferred relationship | Existential restriction modifier | 1 | 
| Closure of hepatico-duodenostomy | Procedure site - Indirect | False | Structure of hepatic duct | Inferred relationship | Existential restriction modifier | 1 | 
| Closure of hepatico-enterostomy | Procedure site - Indirect | False | Structure of hepatic duct | Inferred relationship | Existential restriction modifier | 1 | 
| Closure of hepatico-gastrostomy | Procedure site - Indirect | False | Structure of hepatic duct | Inferred relationship | Existential restriction modifier | 1 | 
| Repair of hepatic duct | Procedure site - Direct | False | Structure of hepatic duct | Inferred relationship | Existential restriction modifier | 1 | 
| Excision of lesion of hepatic ducts | Procedure site - Direct | False | Structure of hepatic duct | Inferred relationship | Existential restriction modifier | 1 | 
| Hepaticotomy | Procedure site | False | Structure of hepatic duct | Inferred relationship | Existential restriction modifier | 1 | 
| Hepaticotomy with drainage | Procedure site | False | Structure of hepatic duct | Inferred relationship | Existential restriction modifier | 1 | 
| Hepaticotomy with drainage | Procedure site - Indirect | False | Structure of hepatic duct | Inferred relationship | Existential restriction modifier | 2 | 
| Incision of hepatic ducts | Procedure site | False | Structure of hepatic duct | Inferred relationship | Existential restriction modifier | 1 | 
| Longmire operation, bile duct anastomosis | Procedure site | False | Structure of hepatic duct | Inferred relationship | Existential restriction modifier | 1 | 
| Longmire operation, bile duct anastomosis | Procedure site | False | Structure of hepatic duct | Inferred relationship | Existential restriction modifier | 2 | 
| Longmire operation, bile duct anastomosis | Procedure site | False | Structure of hepatic duct | Inferred relationship | Existential restriction modifier | 1 | 
| Longmire operation, bile duct anastomosis | Procedure site | False | Structure of hepatic duct | Inferred relationship | Existential restriction modifier | 2 | 
| Longmire operation, bile duct anastomosis | Procedure site | False | Structure of hepatic duct | Inferred relationship | Existential restriction modifier | 1 | 
| Longmire operation, bile duct anastomosis | Procedure site | False | Structure of hepatic duct | Inferred relationship | Existential restriction modifier | 2 | 
| Hepaticotomy | Procedure site - Direct | False | Structure of hepatic duct | Inferred relationship | Existential restriction modifier | 1 | 
| Closure of hepatic duct anastomosis | Procedure site - Direct | False | Structure of hepatic duct | Inferred relationship | Existential restriction modifier | 1 | 
| Closure of hepatico-duodenostomy | Procedure site - Direct | True | Structure of hepatic duct | Inferred relationship | Existential restriction modifier | 1 | 
| Closure of hepatico-enterostomy | Procedure site - Direct | True | Structure of hepatic duct | Inferred relationship | Existential restriction modifier | 1 | 
| Closure of hepatico-gastrostomy | Procedure site - Direct | True | Structure of hepatic duct | Inferred relationship | Existential restriction modifier | 1 | 
| Suture of hepatic duct | Procedure site - Direct | False | Structure of hepatic duct | Inferred relationship | Existential restriction modifier | 1 | 
| Anastomosis of intrahepatic duct to jejunum | Procedure site - Direct | True | Structure of hepatic duct | Inferred relationship | Existential restriction modifier | 1 | 
| Portoenterostomy | Procedure site - Direct | True | Structure of hepatic duct | Inferred relationship | Existential restriction modifier | 1 | 
| Kasai procedure | Procedure site - Direct | True | Structure of hepatic duct | Inferred relationship | Existential restriction modifier | 1 | 
| Roux-en-Y hepaticojejunostomy | Procedure site - Direct | True | Structure of hepatic duct | Inferred relationship | Existential restriction modifier | 1 | 
| Excision of common hepatic duct | Procedure site - Direct | False | Structure of hepatic duct | Inferred relationship | Existential restriction modifier | 1 | 
| Closure of hepatic duct fistula | Procedure site - Direct | False | Structure of hepatic duct | Inferred relationship | Existential restriction modifier | 1 | 
| Hepaticolithotomy | Procedure site - Indirect | False | Structure of hepatic duct | Inferred relationship | Existential restriction modifier | 1 | 
| Hepatic portoenterostomy | Procedure site - Direct | True | Structure of hepatic duct | Inferred relationship | Existential restriction modifier | 1 | 
| Hepaticotomy with drainage | Procedure site - Direct | False | Structure of hepatic duct | Inferred relationship | Existential restriction modifier | 3 | 
| Hepatocholangiocystoduodenostomy | Procedure site - Direct | True | Structure of hepatic duct | Inferred relationship | Existential restriction modifier | 1 | 
| Anastomosis of hepatic ducts | Procedure site - Direct | True | Structure of hepatic duct | Inferred relationship | Existential restriction modifier | 1 | 
| Incision of hepatic ducts | Procedure site - Direct | False | Structure of hepatic duct | Inferred relationship | Existential restriction modifier | 1 | 
| Hepatojejunostomy | Procedure site - Direct | True | Structure of hepatic duct | Inferred relationship | Existential restriction modifier | 1 | 
| Hepaticocholangiojejunostomy | Procedure site - Direct | False | Structure of hepatic duct | Inferred relationship | Existential restriction modifier | 2 | 
| Resection of hepatic ducts | Procedure site - Direct | False | Structure of hepatic duct | Inferred relationship | Existential restriction modifier | 1 | 
| Anastomosis of gallbladder to hepatic ducts | Procedure site - Direct | True | Structure of hepatic duct | Inferred relationship | Existential restriction modifier | 2 | 
| Hepatoduodenostomy | Procedure site - Direct | True | Structure of hepatic duct | Inferred relationship | Existential restriction modifier | 1 |