2026 ICD-10-CM Diagnosis Code K83.09Other cholangitis

ICD-10-CM Codes›K00–K95›K80-K87›K83

ICD-10-CM K83.09
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

K83.09 is a billable ICD-10-CM diagnosis code for other cholangitis. 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. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Biliary tract disease.

Code Identity

ICD-10-CM Code
K83.09
Billable Status
Yes — Valid for Submission
Code Describes
Other cholangitis
Short Description
Other cholangitis
Same as the full description in the CMS dataset.
Parent Code
K83.0
Cholangitis

Code Classification

ChapterK00–K95Diseases of the digestive system
SectionK80-K87Disorders of gallbladder, biliary tract and pancreas
CategoryK83Other diseases of biliary tract
This CodeK83.09Other cholangitis

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Acute cholangitis
  • Acute obstructive cholangitis
  • Ascending cholangitis
  • Autoimmune cholangitis
  • Autoimmune hepatitis
  • Autoimmune liver disease
  • Bacterial cholangitis
  • Bleeding esophageal varices
  • Bleeding esophageal varices due to autoimmune hepatitis
  • Bleeding esophageal varices due to hepatic fibrosis
  • Bleeding esophageal varices due to primary biliary cholangitis
  • Cholangiohepatitis
  • Cholangiolitis
  • Cholangitis
  • Cholangitis co-occurrent and due to calculus of gallbladder
  • Cholangitis lenta
  • Cholangitis with AIDS
  • Chronic cholangitis
  • Chronic lymphocytic cholangitis-cholangiohepatitis
  • Congenital hypotrichia
  • Eosinophilic cholangitis
  • Esophageal varices associated with another disorder
  • Esophageal varices due to cirrhosis of liver
  • Follicular cholangitis and pancreatitis
  • HIV-related sclerosing cholangitis
  • IgG4-related sclerosing cholangitis
  • Immunoglobulin G4 related disease
  • Infective cholangitis
  • Neonatal sclerosing cholangitis, ichthyosis, hypotrichosis syndrome
  • Obliterative cholangitis
  • Pericholangitis
  • Primary biliary cholangitis and/or primary sclerosing cholangitis and autoimmune hepatitis overlap syndrome
  • Primary cholangitis
  • Recurrent cholangitis
  • Recurrent pyogenic cholangitis
  • Sclerosing cholangitis
  • Secondary cholangitis
  • Secondary sclerosing cholangitis
  • Stenosing cholangitis
  • Stenosis of bile duct
  • Suppurative cholangitis
  • Tuberculous infection of bile duct

Tabular List NotesGuidance

Coding notes and annotation back-references applicable to this code.

Inclusion Terms

  • Ascending cholangitis
  • Cholangitis NOS
  • Primary cholangitis
  • Recurrent cholangitis
  • Sclerosing cholangitis
  • Secondary cholangitis
  • Stenosing cholangitis
  • Suppurative cholangitis

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.

    • Angiocholitis
    • Cholangiolitis(acute) (chronic) (extrahepatic) (gangrenous) (intrahepatic)
    • Cholangitis(ascending) (recurrent) (secondary) (stenosing) (suppurative)
    • Cholangitis(ascending) (recurrent) (secondary) (stenosing) (suppurative)
      • primary
    • Cholangitis(ascending) (recurrent) (secondary) (stenosing) (suppurative)
      • sclerosing
    • Choledochitis(suppurative)

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

  • Cholangitis

    inflammation of the biliary ductal system (bile ducts); intrahepatic, extrahepatic, or both.

  • Cholangitis, Sclerosing

    chronic inflammatory disease of the biliary tract. it is characterized by fibrosis and hardening of the intrahepatic and extrahepatic biliary ductal systems leading to bile duct strictures, cholestasis, and eventual biliary cirrhosis.

  • Liver Cirrhosis, Biliary

    fibrosis of the hepatic parenchyma due to obstruction of bile flow (cholestasis) in the intrahepatic or extrahepatic bile ducts (bile ducts, intrahepatic; bile ducts, extrahepatic). primary biliary cholangitis involves the destruction of small intra-hepatic bile ducts and decreased bile secretion. secondary biliary cholangitis is produced by prolonged obstruction of large intrahepatic or extrahepatic bile ducts from a variety of causes.

  • Pericholangitis

    inflammation of the tissue surrounding the biliary ducts.

  • Ascending Cholangitis

    acute infection of the bile ducts caused by bacteria ascending from the small intestine.

  • Acute Cholangitis

    cholangitis that is both sudden in onset and of a relatively short duration.

  • Chronic Cholangitis

    cholangitis that is persistent and long-standing.

Patient EducationClinical

Bile Duct Diseases

Your liver makes a digestive juice called bile. Your gallbladder stores it between meals. When you eat, your gallbladder pushes the bile into tubes called bile ducts. They carry the bile to your small intestine. The bile helps break down fat. It also helps the liver get rid of toxins and wastes.

Read the full article at MedlinePlus

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

Code History & ChangesHistory

Replacement K83.09 replaces the following previously assigned code(s):

  • K83.0 - Cholangitis
FY 2019AddedAdded to the ICD-10-CM code setEffective October 1, 2018.
FY 2020–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About K83.09Overview

Is K83.09 (Cholangitis) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report other cholangitis on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does K83.09 group to?

When other cholangitis 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.

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.