ICD-10-CM 2027
ICD-10 code for Hepatobiliary calculus
From the official ICD-10-CM alphabetic index entry “Calculus, calculi, calculous › hepatobiliary”. Page updated September 29, 2026.
About coding Hepatobiliary calculus
The ICD-10-CM code for Hepatobiliary calculus is K80.80 (Other cholelithiasis without obstruction). The official index lists 1 more specific code, so check the documentation for details such as type, cause, site or severity before settling on K80.80.
Within K80.8, choose K80.80 (without obstruction) only when documentation doesn't support a more specific option: with obstruction (K80.81).
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 Hepatobiliary calculus codes (official index)
- with obstruction K80.81 — Other cholelithiasis with obstruction
Common questions about Hepatobiliary calculus ICD-10 codes
What is the ICD-10 code for Hepatobiliary calculus?
- K80.80 — Other cholelithiasis without obstruction. More specific codes apply when the documentation supports them: K80.81.
Is K80.80 billable?
- Yes. K80.80 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can K80.80 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict K80.80 as a principal diagnosis.
Is K80.80 a CC or MCC?
- No. K80.80 is neither a CC nor an MCC under MS-DRG v44.0.