| K821 | Hydrops of gallbladder |
| K822 | Perforation of gallbladder |
| K823 | Fistula of gallbladder |
| K824 | Cholesterolosis of gallbladder |
| K828 | Other specified diseases of gallbladder |
| K829 | Disease of gallbladder, unspecified |
| K82A | Disorders of gallbladder in diseases classified elsewhere |
| K82A1 | Gangrene of gallbladder in cholecystitis |
| K82A2 | Perforation of gallbladder in cholecystitis |
| K83 | Other diseases of biliary tract |
| K830 | Cholangitis |
| K8301 | Primary sclerosing cholangitis |
| K8309 | Other cholangitis |
| K831 | Obstruction of bile duct |
| K832 | Perforation of bile duct |
| K833 | Fistula of bile duct |
| K834 | Spasm of sphincter of Oddi |
| K835 | Biliary cyst |
| K838 | Other specified diseases of biliary tract |
| K839 | Disease of biliary tract, unspecified |
| K85 | Acute pancreatitis |
| K850 | Idiopathic acute pancreatitis |
| K8500 | Idiopathic acute pancreatitis without necrosis or infection |
| K8501 | Idiopathic acute pancreatitis with uninfected necrosis |
| K8502 | Idiopathic acute pancreatitis with infected necrosis |
| K851 | Biliary acute pancreatitis |
| K8510 | Biliary acute pancreatitis without necrosis or infection |
| K8511 | Biliary acute pancreatitis with uninfected necrosis |
| K8512 | Biliary acute pancreatitis with infected necrosis |
| K852 | Alcohol induced acute pancreatitis |
| K8520 | Alcohol induced acute pancreatitis without necrosis or infct Alcohol induced acute pancreatitis without necrosis or infection |
| K8521 | Alcohol induced acute pancreatitis with uninfected necrosis |
| K8522 | Alcohol induced acute pancreatitis with infected necrosis |
| K853 | Drug induced acute pancreatitis |
| K8530 | Drug induced acute pancreatitis without necrosis or infection |
| K8531 | Drug induced acute pancreatitis with uninfected necrosis |
| K8532 | Drug induced acute pancreatitis with infected necrosis |
| K858 | Other acute pancreatitis |
| K8580 | Other acute pancreatitis without necrosis or infection |
| K8581 | Other acute pancreatitis with uninfected necrosis |
| K8582 | Other acute pancreatitis with infected necrosis |
| K859 | Acute pancreatitis, unspecified |
| K8590 | Acute pancreatitis without necrosis or infection, unspecified |
| K8591 | Acute pancreatitis with uninfected necrosis, unspecified |
| K8592 | Acute pancreatitis with infected necrosis, unspecified |
| K86 | Other diseases of pancreas |
| K860 | Alcohol-induced chronic pancreatitis |
| K861 | Other chronic pancreatitis |
| K862 | Cyst of pancreas |
| K863 | Pseudocyst of pancreas |