2026 ICD-10-CM Diagnosis Code K83.3Fistula of bile duct

ICD-10-CM Codes›K00–K95›K80-K87›K83

ICD-10-CM K83.3
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

K83.3 is a billable ICD-10-CM diagnosis code for fistula of bile duct. 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
K83.3
Billable Status
Yes — Valid for Submission
Code Describes
Fistula of bile duct
Short Description
Fistula of bile duct
Same as the full description in the CMS dataset.
Parent Code
K83
Other diseases of biliary tract

Code Classification

ChapterK00–K95Diseases of the digestive system
SectionK80-K87Disorders of gallbladder, biliary tract and pancreas
CategoryK83Other diseases of biliary tract
This CodeK83.3Fistula of bile duct

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Acquired choledochojejunal fistula
  • Bile duct leakage
  • Bile leakage after removal of T-tube
  • Biliary anastomotic leak
  • Bronchobiliary fistula
  • Choledochoduodenal fistula
  • Disorder of anastomosis of biliary tract
  • Duodenal fistula
  • Fistula of bile duct
  • Internal duodenal fistula
  • Jejunal fistula
  • Leakage of bile
  • Leakage of bile from accessory bile duct
  • Leakage of bile from choledochotomy
  • Post-cholecystectomy bile leakage
  • Postprocedural bile duct leakage
  • Tracheobiliary fistula
  • Vascular-biliary fistula

Tabular List NotesGuidance

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

Inclusion Terms

  • Choledochoduodenal fistula

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.

    • Fistula(cutaneous)
      • bile duct (common) (hepatic)
    • Fistula(cutaneous)
      • bile duct (common) (hepatic)
        • with calculus, stones

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

  • Bile Duct Leakage

    the leakage of bile into the abdominal cavity as a result of injury to the bile duct.

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.

Convert K83.3 to ICD-9-CMHistory

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

ICD-9-CM
576.4 Fistula of bile duct
Exact Match The mapping is direct, with no qualifiers.

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 K83.3Overview

Is K83.3 (Other diseases of biliary tract) a billable code?

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

What MS-DRG does K83.3 group to?

When fistula of bile duct 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 K83.3?

Under the General Equivalence Mappings, fistula of bile duct converts to ICD-9-CM 576.4 (fistula of bile duct). The mapping is a direct match.

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.