ICD-10-CM 2027
ICD-10 code for bile duct calculus
Calculus of bile duct without cholangitis or cholecystitis without obstruction
From the official ICD-10-CM alphabetic index entry “Calculus, calculi, calculous › bile duct (common) (hepatic)”. Page updated September 29, 2026.
About coding bile duct calculus
The ICD-10-CM code for bile duct calculus is K80.50 (Calculus of bile duct without cholangitis or cholecystitis without obstruction). The official index lists 21 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on K80.50.
Within K80.5, choose K80.50 (without obstruction) only when documentation doesn't support a more specific option: with obstruction (K80.51).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
In MS-DRG v44.0, it is part of the grouping logic for DRG 444 (Disorders of the Biliary Tract with MCC, relative weight 1.6665), DRG 445 (Disorders of the Biliary Tract with CC, relative weight 1.0872) and DRG 446 (Disorders of the Biliary Tract without CC/MCC, relative weight 0.8124), in MDC 07 (Diseases and Disorders of the Hepatobiliary System and Pancreas), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
More specific bile duct calculus codes (official index)
- with
- calculus of gallbladder
- cholangitis K80.30 — Calculus of bile duct with cholangitis, unspecified, without obstruction
- with
- cholecystitis
- obstruction K80.31 — Calculus of bile duct with cholangitis, unspecified, with obstruction
- acute K80.32 — Calculus of bile duct with acute cholangitis without obstruction
- with
- chronic cholangitis K80.36 — Calculus of bile duct with acute and chronic cholangitis without obstruction
- with obstruction K80.37 — Calculus of bile duct with acute and chronic cholangitis with obstruction
- obstruction K80.33 — Calculus of bile duct with acute cholangitis with obstruction
- chronic K80.34 — Calculus of bile duct with chronic cholangitis without obstruction
- with
- acute cholangitis K80.36 — Calculus of bile duct with acute and chronic cholangitis without obstruction
- with obstruction K80.37 — Calculus of bile duct with acute and chronic cholangitis with obstruction
- obstruction K80.35 — Calculus of bile duct with chronic cholangitis with obstruction
- cholecystitis (with cholangitis) K80.40 — Calculus of bile duct with cholecystitis, unspecified, without obstruction
- with obstruction K80.41 — Calculus of bile duct with cholecystitis, unspecified, with obstruction
- acute K80.42 — Calculus of bile duct with acute cholecystitis without obstruction
- with
- chronic cholecystitis K80.46 — Calculus of bile duct with acute and chronic cholecystitis without obstruction
- with obstruction K80.47 — Calculus of bile duct with acute and chronic cholecystitis with obstruction
- obstruction K80.43 — Calculus of bile duct with acute cholecystitis with obstruction
- chronic K80.44 — Calculus of bile duct with chronic cholecystitis without obstruction
- with
- acute cholecystitis K80.46 — Calculus of bile duct with acute and chronic cholecystitis without obstruction
- with obstruction K80.47 — Calculus of bile duct with acute and chronic cholecystitis with obstruction
- obstruction K80.45 — Calculus of bile duct with chronic cholecystitis with obstruction
- obstruction K80.51 — Calculus of bile duct without cholangitis or cholecystitis with obstruction
Common questions about bile duct calculus ICD-10 codes
What is the ICD-10 code for bile duct calculus?
- K80.50 — Calculus of bile duct without cholangitis or cholecystitis without obstruction. More specific codes apply when the documentation supports them: K80.30, K80.31, K80.32, K80.36 and others below.
Is K80.50 billable?
- Yes. K80.50 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can K80.50 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict K80.50 as a principal diagnosis.
Is K80.50 a CC or MCC?
- No. K80.50 is neither a CC nor an MCC under MS-DRG v44.0.