All
 C06 Digestive System Diseases D004066 +
 C06.130 Biliary Tract Diseases D001660 +
 C06.130.120 Bile Duct Diseases D001649 +
 C06.130.120.135 Cholestasis D002779 +
 C06.130.120.135.150 Cholestasis, Extrahepatic D001651 
 C06.130.120.135.250 Cholestasis, Intrahepatic D002780 +