K80.31 Calculus of bile duct with cholangitis, unspecified, with obstruction

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

Applies from K80 Cholelithiasis

Excludes1 (never code together)

• retained cholelithiasis following cholecystectomy (K91.86)

Applies from K80.3 Calculus of bile duct with cholangitis

Applicable to

• Any condition listed in K80.5 with cholangitis

MS-DRG index

Defines the logic of DRG(s) 444-446 in MDC 07.

Approximate ICD-9-CM (GEMs)

• 574.51 Calculus of bile duct without mention of cholecystitis, with obstruction (approximate)
• 576.1 Cholangitis (approximate)

Code annotations containing back-references to K80.31

Back-references to K80.3

• Type 1 Excludes: K83.0 Cholangitis ("cholangitis with choledocholithiasis (K80.3-, K80.4-)")

Back-references to K80

• Use Additional: D57.09 Hb-SS disease with crisis with other specified complication ("cholelithiasis (K80.-)")
• Use Additional: D57.218 Sickle-cell/Hb-C disease with crisis with other specified complication ("cholelithiasis (K80.-)")
• Use Additional: D57.418 Sickle-cell thalassemia, unspecified, with crisis with other specified complication ("cholelithiasis (K80.-)")
• Use Additional: D57.438 Sickle-cell thalassemia beta zero with crisis with other specified complication ("cholelithiasis (K80.-)")
• Use Additional: D57.458 Sickle-cell thalassemia beta plus with crisis with other specified complication ("cholelithiasis (K80.-)")
• Use Additional: D57.818 Other sickle-cell disorders with crisis with other specified complication ("cholelithiasis (K80.-)")
• Type 1 Excludes: K81 Cholecystitis ("cholecystitis with cholelithiasis (K80.-)")
• Type 1 Excludes: K82.0 Obstruction of gallbladder ("obstruction of gallbladder with cholelithiasis (K80.-)")
• Type 1 Excludes: K82.4 Cholesterolosis of gallbladder ("cholesterolosis of gallbladder with cholelithiasis (K80.-)")
• Type 1 Excludes: K83.1 Obstruction of bile duct ("obstruction of bile duct with cholelithiasis (K80.-)")

Diagnosis Index entries for K80.31

• Calculus, calculi, calculous › bile duct (common) (hepatic) › with › cholangitis › with › obstruction

Nearby codes

• K80.2 Calculus of gallbladder without cholecystitis
• K80.20 Calculus of gallbladder without cholecystitis without obstruction
• K80.21 Calculus of gallbladder without cholecystitis with obstruction
• K80.3 Calculus of bile duct with cholangitis
• K80.30 Calculus of bile duct with cholangitis, unspecified, without obstruction
• K80.31 Calculus of bile duct with cholangitis, unspecified, with obstruction (this code)
• K80.32 Calculus of bile duct with acute cholangitis without obstruction
• K80.33 Calculus of bile duct with acute cholangitis with obstruction
• K80.34 Calculus of bile duct with chronic cholangitis without obstruction
• K80.35 Calculus of bile duct with chronic cholangitis with obstruction
• K80.36 Calculus of bile duct with acute and chronic cholangitis without obstruction