ICD-10-CM 2027
ICD-10 code for gallbladder calculus
From the official ICD-10-CM alphabetic index entry “Calculus, calculi, calculous › gallbladder”. Page updated September 29, 2026.
About coding gallbladder calculus
The ICD-10-CM code for gallbladder calculus is K80.20 (Calculus of gallbladder without cholecystitis without obstruction). The official index lists 13 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on K80.20.
Within K80.2, choose K80.20 (without obstruction) only when documentation doesn't support a more specific option: with obstruction (K80.21).
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 gallbladder calculus codes (official index)
- with
- bile duct calculus
- cholecystitis K80.10 — Calculus of gallbladder with chronic cholecystitis without obstruction
- with obstruction K80.11 — Calculus of gallbladder with chronic cholecystitis with obstruction
- acute K80.00 — Calculus of gallbladder with acute cholecystitis without obstruction
- with
- chronic cholecystitis K80.12 — Calculus of gallbladder with acute and chronic cholecystitis without obstruction
- with obstruction K80.13 — Calculus of gallbladder with acute and chronic cholecystitis with obstruction
- obstruction K80.01 — Calculus of gallbladder with acute cholecystitis with obstruction
- chronic K80.10 — Calculus of gallbladder with chronic cholecystitis without obstruction
- with
- acute cholecystitis K80.12 — Calculus of gallbladder with acute and chronic cholecystitis without obstruction
- with obstruction K80.13 — Calculus of gallbladder with acute and chronic cholecystitis with obstruction
- obstruction K80.11 — Calculus of gallbladder with chronic cholecystitis with obstruction
- specified NEC K80.18 — Calculus of gallbladder with other cholecystitis without obstruction
- with obstruction K80.19 — Calculus of gallbladder with other cholecystitis with obstruction
- obstruction K80.21 — Calculus of gallbladder without cholecystitis with obstruction
Common questions about gallbladder calculus ICD-10 codes
What is the ICD-10 code for gallbladder calculus?
- K80.20 — Calculus of gallbladder without cholecystitis without obstruction. More specific codes apply when the documentation supports them: K80.10, K80.11, K80.00, K80.12 and others below.
Is K80.20 billable?
- Yes. K80.20 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can K80.20 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict K80.20 as a principal diagnosis.
Is K80.20 a CC or MCC?
- No. K80.20 is neither a CC nor an MCC under MS-DRG v44.0.