Table 1.

HPB procedures (ICD-9-CM codes) analysed in the current study

Pancreas procedures

Other partial pancreatectomy (52.59)

Total pancreatectomy (52.6)

Proximal pancreatectomy (52.51)

Distal pancreatectomy (52.52)

Radical subtotal pancreatectomy/Whipple (52.53)

Internal drainage of pancreatic cyst (52.4)

Anastomosis of pancreas including intestine (52.96)

Liver procedures

Partial hepatectomy (50.22)

Hepatic lobectomy (50.3)

Other destruction of liver lesion (50.29)

Biliary procedures

Anastomosis of gallbladder or bile duct (51.3)

Local excision/destruction of lesion/tissue of bile ducts and sphincter of Oddi (51.6)

Excision of cystic duct remnant (51.61)

Other excision of common duct (51.63)

Excision of ampulla of Vater (with re-implantation of common duct) (51.62)

Choledochoenterostomy (51.36)

Pancreatic sphincteroplasty (51.83)

Choledochoplasty (51.72)

Revision of anastomosis of biliary tract (51.94)