K85 Acute pancreatitis

Category / Non-billable header 24 subcodes

Block: Disorders of gallbladder, biliary tract and pancreas (K80-K87)

Includes

  • acute (recurrent) pancreatitis
  • subacute pancreatitis

Subcodes

Subcodes are listed below for reference. Detail pages are not available for chapters 11–22.

Code Description Billable
K85..0 Idiopathic acute pancreatitis No
K85..00 Idiopathic acute pancreatitis without necrosis or infection Yes
K85..01 Idiopathic acute pancreatitis with uninfected necrosis Yes
K85..02 Idiopathic acute pancreatitis with infected necrosis Yes
K85..1 Biliary acute pancreatitis No
K85..10 Biliary acute pancreatitis without necrosis or infection Yes
K85..11 Biliary acute pancreatitis with uninfected necrosis Yes
K85..12 Biliary acute pancreatitis with infected necrosis Yes
K85..2 Alcohol induced acute pancreatitis No
K85..20 Alcohol induced acute pancreatitis without necrosis or infection Yes
K85..21 Alcohol induced acute pancreatitis with uninfected necrosis Yes
K85..22 Alcohol induced acute pancreatitis with infected necrosis Yes
K85..3 Drug induced acute pancreatitis No
K85..30 Drug induced acute pancreatitis without necrosis or infection Yes
K85..31 Drug induced acute pancreatitis with uninfected necrosis Yes
K85..32 Drug induced acute pancreatitis with infected necrosis Yes
K85..8 Other acute pancreatitis No
K85..80 Other acute pancreatitis without necrosis or infection Yes
K85..81 Other acute pancreatitis with uninfected necrosis Yes
K85..82 Other acute pancreatitis with infected necrosis Yes
K85..9 Acute pancreatitis, unspecified No
K85..90 Acute pancreatitis without necrosis or infection, unspecified Yes
K85..91 Acute pancreatitis with uninfected necrosis, unspecified Yes
K85..92 Acute pancreatitis with infected necrosis, unspecified Yes

Last reviewed: September 2026