2026 ICD-10-CM Diagnosis Code K80.80Other cholelithiasis without obstruction

ICD-10-CM Codes›K00–K95›K80-K87›K80

ICD-10-CM K80.80
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

K80.80 is a billable ICD-10-CM diagnosis code for other cholelithiasis without obstruction. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 444 through 446. Coders also document this condition as calculus of intrahepatic bile duct. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Biliary tract disease.

Code Identity

ICD-10-CM Code
K80.80
Billable Status
Yes — Valid for Submission
Code Describes
Other cholelithiasis without obstruction
Short Description
Other cholelithiasis without obstruction
Same as the full description in the CMS dataset.
Parent Code
K80.8
Other cholelithiasis

Code Classification

ChapterK00–K95Diseases of the digestive system
SectionK80-K87Disorders of gallbladder, biliary tract and pancreas
CategoryK80Cholelithiasis
This CodeK80.80Other cholelithiasis without obstruction

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Calculus of intrahepatic bile duct
  • Primary intrahepatic lithiasis

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

External Cause of Injuries IndexGuidance

References for this code in the External Cause of Injuries Index.

    • Calculus, calculi, calculous
      • biliary
        • specified NEC
    • Calculus, calculi, calculous
      • hepatobiliary
    • Cholelithiasis(cystic duct) (gallbladder) (impacted) (multiple)
      • specified NEC
    • Gallstone(colic) (cystic duct) (gallbladder) (impacted) (multiple)
      • specified NEC

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR DIG017
Biliary tract disease
Default principal diagnosis: inpatient Yes · outpatient Yes

Clinical InformationClinical

  • Choledocholithiasis

    presence or formation of gallstones in the common bile duct.

  • Cholelithiasis

    presence or formation of gallstones in the biliary tract, usually in the gallbladder (cholecystolithiasis) or the common bile duct (choledocholithiasis).

Patient EducationClinical

Gallstones

Your gallbladder is a pear-shaped organ under your liver. It stores bile, a fluid made by your liver to digest fat. As your stomach and intestines digest food, your gallbladder releases bile through a tube called the common bile duct. The duct connects your gallbladder and liver to your small intestine.

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Convert K80.80 to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
574.20 Cholelithiasis NOS
Approximate The match is approximate rather than exact.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About K80.80Overview

Is K80.80 (Other cholelithiasis) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report other cholelithiasis without obstruction on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does K80.80 group to?

When other cholelithiasis without obstruction is the principal diagnosis on an inpatient stay, it groups to MS-DRG 444, 445, 446, with relative weights from 0.8273 to 1.6709 depending on complications. Higher weights mean higher Medicare reimbursement.

What is the ICD-9 equivalent of K80.80?

Under the General Equivalence Mappings, other cholelithiasis without obstruction converts to ICD-9-CM 574.20 (cholelithiasis NOS). The mapping is approximate, so confirm the match fits the documentation.

Footnotes

[1] Chronic - a chronic condition code indicates a condition lasting 12 months or longer and its effect on the patient based on one or both of the following criteria:

  • The condition results in the need for ongoing intervention with medical products,treatment, services, and special equipment
  • The condition places limitations on self-care, independent living, and social interactions.