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ICD-10 Code K80.35: Calculus of bile duct with chronic cholangitis with obstruction

K80.35 is a billable ICD-10 diagnosis code used to classify Calculus of bile duct with chronic cholangitis with obstruction in medical records and claims. You may see this code in hospital records, discharge summaries, insurance claims, encounter documentation, referrals, or other healthcare billing and coding records. ICD-10 codes are diagnosis classification codes used in healthcare records, reporting, coding workflows, and billing support. This code sits within the broader ICD-10 area for Diseases of the digestive system (K00-K95).

Reviewed by HealthAssure Clinical TeamUpdated 26 May 2026

What is this code?

ICD-10 codes are diagnosis classification codes used in healthcare records, reporting, coding workflows, and billing support. This code sits within the broader ICD-10 area for Diseases of the digestive system (K00-K95).

When is it used?

  • May be used when a clinician documents calculus of bile duct with chronic cholangitis with obstruction in a patient's medical record.
  • May appear in hospital records, claims, referrals, and clinical documentation.
  • This code can be used as a clinically usable diagnosis entry in standardized coding workflows.

What it does not mean

  • A code alone does not explain severity, treatment plan, or outcome.
  • A medical code should not be treated as a substitute for a doctor's diagnosis or advice.

Code hierarchy

chapter
11Diseases of the digestive system (K00-K95)
block
K80-K87Disorders of gallbladder, biliary tract and pancreas
category
K80Cholelithiasis
category
K80.3Calculus of bile duct with cholangitis
currentK80.3

Where you may see this code

You may see this code in hospital records, discharge summaries, insurance claims, encounter documentation, referrals, or other healthcare billing and coding records.

Related specialists

GastroenterologistGeneral Physician

Coverage-related procedures and services

CPT 43260high
ENDOSCOPIC RETROGRADE CHOLANGIOPANCREATOGRAPHY (ERCP); DIAGNOSTIC, INCLUDING COLLECTION OF SPECIMEN(S) BY BRUSHING OR WASHING, WHEN PERFORMED (SEPARATE PROCEDURE)
Source: CMS coverage guidance
CPT 43278high
ENDOSCOPIC RETROGRADE CHOLANGIOPANCREATOGRAPHY (ERCP); WITH ABLATION OF TUMOR(S), POLYP(S), OR OTHER LESION(S), INCLUDING PRE- AND POST-DILATION AND GUIDE WIRE PASSAGE, WHEN PERFORMED
Source: CMS coverage guidance
CPT 43261high
ENDOSCOPIC RETROGRADE CHOLANGIOPANCREATOGRAPHY (ERCP); WITH BIOPSY, SINGLE OR MULTIPLE
Source: CMS coverage guidance
CPT 43265high
ENDOSCOPIC RETROGRADE CHOLANGIOPANCREATOGRAPHY (ERCP); WITH DESTRUCTION OF CALCULI, ANY METHOD (EG, MECHANICAL, ELECTROHYDRAULIC, LITHOTRIPSY)
Source: CMS coverage guidance
CPT 43274high
ENDOSCOPIC RETROGRADE CHOLANGIOPANCREATOGRAPHY (ERCP); WITH PLACEMENT OF ENDOSCOPIC STENT INTO BILIARY OR PANCREATIC DUCT, INCLUDING PRE- AND POST-DILATION AND GUIDE WIRE PASSAGE, WHEN PERFORMED, INCLUDING SPHINCTEROTOMY, WHEN PERFORMED, EACH STENT
Source: CMS coverage guidance
CPT 43263high
ENDOSCOPIC RETROGRADE CHOLANGIOPANCREATOGRAPHY (ERCP); WITH PRESSURE MEASUREMENT OF SPHINCTER OF ODDI
Source: CMS coverage guidance

Coding guidelines

Common synonyms

Calculus of bile duct with chronic cholangitis with obstruction

Frequently asked questions

Code details

CodeK80.35
SystemICD10
Display nameCalculus of bile duct with chronic cholangitis with obstruction
ChapterDiseases of the digestive system (K00-K95)
BlockDisorders of gallbladder, biliary tract and pancreas

Flags

BillableYes
Valid clinical useYes

Source

SourceICD-10
Version2026-annual
Releaseannual
Year2026

Index terms

Matched terms
Calculus, calculi, calculous

About this content

This page is prepared by HealthAssure's clinical team using official coding standards from ICD-10. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.

ICD-10 Code K80.35 for Calculus of bile duct with chronic cholangitis with obstruction | HealthAssure