2026 ICD-10-CM Diagnosis Code K83.8Other specified diseases of biliary tract

ICD-10-CM Codes›K00–K95›K80-K87›K83

ICD-10-CM K83.8
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

K83.8 is a billable ICD-10-CM diagnosis code for other specified diseases of biliary tract. 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
K83.8
Billable Status
Yes — Valid for Submission
Code Describes
Other specified diseases of biliary tract
Short Description
Other specified diseases of biliary tract
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 CodeK83.8Other specified diseases of biliary tract

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Abnormal biliary-pancreatic junction
  • Acquired dilation of bile duct
  • Acquired paucity of intrahepatic bile ducts
  • Acute cholangiohepatitis
  • Adhesion of bile duct
  • Adhesions of biliary tree
  • Atrophy of bile duct
  • Atrophy of biliary tree
  • Benign intrahepatic cholestasis type 1
  • Benign recurrent intrahepatic cholestasis
  • Bile duct leakage
  • Bile duct proliferation
  • Biliary sludge
  • Biliary tract dysplasia
  • Cholangiectasis
  • Cholangiohepatitis
  • Cystic dilation of intrahepatic duct
  • Diverticulum of peri-ampullary tissue of hepatopancreatic ampulla
  • Dysfunction of sphincter of Oddi
  • Dyskinesia of sphincter of Oddi
  • Dysplasia of extrahepatic bile ducts
  • Familial hypertrophy of sphincter of Oddi
  • Fibrosis of bile duct
  • Functional biliary sphincter of Oddi disorder
  • Fungal infection of bile duct
  • Hemobilia
  • Hemorrhage of bile duct
  • Hepatic duct dysplasia
  • Hypertrophy of bile duct
  • Hypertrophy of biliary tract
  • Idiopathic ductopenia
  • Impaired bile formation
  • Infection of bile duct caused by parasite
  • Infection of biliary tract
  • Ketamine-induced biliary dilatation
  • Leakage of bile
  • Mild biliary tract dysplasia
  • Moderate biliary tract dysplasia
  • Postprocedural bile duct leakage
  • Severe biliary tract dysplasia
  • Ulcer of bile duct
  • Ulceration of biliary tree
  • Verbrycke's syndrome

Tabular List NotesGuidance

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

Inclusion Terms

  • Adhesions of biliary tract
  • Atrophy of biliary tract
  • Hypertrophy of biliary tract
  • Ulcer of biliary tract

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.

    • Adhesions, adhesive(postinfective)
      • bile duct (common) (hepatic)
    • Adhesions, adhesive(postinfective)
      • common duct
    • Atrophy, atrophic(of)
      • bile duct (common) (hepatic)
    • Cholangiectasis
    • Cholangiohepatitis
    • Cicatrix(adherent) (contracted) (painful) (vicious)
      • bile duct (common) (hepatic)
    • Cicatrix(adherent) (contracted) (painful) (vicious)
      • common duct
    • Contraction(s), contracture, contracted
      • bile duct (common) (hepatic)
    • Deformity
      • bile duct (common) (congenital) (hepatic)
        • acquired
    • Deformity
      • biliary duct or passage (congenital)
        • acquired
    • Deformity
      • hepatic duct (congenital)
        • acquired
    • Dilatation
      • common duct (acquired)
    • Disease, diseased
      • bile duct (common) (hepatic)
        • specified NEC
    • Disease, diseased
      • biliary (tract)
        • specified NEC
    • Dyssynergia
      • biliary
    • Hematobilia
    • Hypertrophy, hypertrophic
      • bile duct (common) (hepatic)
    • Insufficiency, insufficient
      • biliary
    • Spasm(s), spastic, spasticity
      • common duct
    • Torsion
      • bile duct (common) (hepatic)
    • Ulcer, ulcerated, ulcerating, ulceration, ulcerative
      • bile duct (common) (hepatic)

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

  • Hemobilia

    hemorrhage in or through the biliary tract due to trauma, inflammation, cholelithiasis, vascular disease, or neoplasms.

  • Choledochal Cyst

    cystic dilatation of the hepatic duct or bile duct.

  • Bile Duct Leakage

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

  • Benign Recurrent Intrahepatic Cholestasis

    reappearance of cholestasis caused by obstruction within the liver by non-cancerous conditions.

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 K83.8 to ICD-9-CMHistory

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

ICD-9-CM
576.8 Dis of biliary tract NEC
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 K83.8Overview

Is K83.8 (Other diseases of biliary tract) a billable code?

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

What MS-DRG does K83.8 group to?

When other specified diseases of biliary tract 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 K83.8?

Under the General Equivalence Mappings, other specified diseases of biliary tract converts to ICD-9-CM 576.8 (dis of biliary tract NEC). 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.