K85.12 Biliary acute pancreatitis with infected necrosis

Billable ICD-10-CM code, FY2026. Acts as a Major Complication or Comorbidity (MCC) as a secondary diagnosis.

Applies from K85 Acute pancreatitis

Includes

• acute (recurrent) pancreatitis
• subacute pancreatitis

Applies from K85.1 Biliary acute pancreatitis

Applicable to

• Gallstone pancreatitis

MS-DRG index

Defines the logic of DRG(s) 438-440 in MDC 07.

Approximate ICD-9-CM (GEMs)

• 577.0 Acute pancreatitis (approximate)

Code annotations containing back-references to K85.12

Back-references to K85

• Code First: E08 Diabetes mellitus due to underlying condition ("pancreatitis and other diseases of the pancreas (K85-K86.-)")

Diagnosis Index entries for K85.12

• Pancreatitis (annular) (apoplectic) (calcareous) (edematous) (hemorrhagic) (malignant) (subacute) (suppurative) › acute (without necrosis or infection) › biliary (without necrosis or infection) › with necrosis (uninfected) › infected
• Pancreatitis (annular) (apoplectic) (calcareous) (edematous) (hemorrhagic) (malignant) (subacute) (suppurative) › acute (without necrosis or infection) › gallstone (without necrosis or infection) › with necrosis (uninfected) › infected
• Pancreatitis (annular) (apoplectic) (calcareous) (edematous) (hemorrhagic) (malignant) (subacute) (suppurative) › gallstone (without necrosis or infection) › with necrosis (uninfected) › infected

Nearby codes

• K85.01 Idiopathic acute pancreatitis with uninfected necrosis
• K85.02 Idiopathic acute pancreatitis with infected necrosis
• K85.1 Biliary acute pancreatitis
• K85.10 Biliary acute pancreatitis without necrosis or infection
• K85.11 Biliary acute pancreatitis with uninfected necrosis
• K85.12 Biliary acute pancreatitis with infected necrosis (this code)
• K85.2 Alcohol induced acute pancreatitis
• K85.20 Alcohol induced acute pancreatitis without necrosis or infection
• K85.21 Alcohol induced acute pancreatitis with uninfected necrosis
• K85.22 Alcohol induced acute pancreatitis with infected necrosis
• K85.3 Drug induced acute pancreatitis