Q44.5

Billable
ChapterQ00–Q99
Ranksubcategory
Official Description

Other congenital malformations of bile ducts

Metadata & Insights
  • •2026 ICD-10-CM Edition - Effective October 1, 2025.
  • •Billable/specific code (valid for reimbursement).
  • •Chapter 17: Congenital Malformations, Deformations and Chromosomal Abnormalities (Q00-Q99).

Instructional Notes

Includes
  • Accessory hepatic duct
  • Biliary duct duplication
  • Congenital malformation of bile duct NOS
  • Cystic duct duplication
General instructions are available for the parent sections:
View CH17 Notes

Clinical Hierarchy

CH17Congenital malformations, deformations and chromosomal abnormalities (Q00-QA0)
Q38-Q45Other congenital malformations of the digestive system (Q38-Q45)
Q44Congenital malformations of gallbladder, bile ducts and liver
Q44.5Other congenital malformations of bile ducts

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to Q44.5:

chapterCH17
Congenital malformations, deformations and chromosomal abnormalities (Q00-QA0)
View context instructions

Alphabetic Index Mentions

These are Diagnosis Index lookup paths that route to Q44.5. Use them as entry terms for search, then confirm final coding instructions in the Tabular List and notes above.

25 raw paths
Aberrant (congenital)1 unique routes
hepatic duct→Q44.5
Absence (of) (organ or part) (complete or partial)1 unique routes
bile, biliary duct, congenital→Q44.5
Accessory (congenital)4 unique routes
biliary duct or passage→Q44.5
cystic duct→Q44.5
hepatic ducts→Q44.5
liver
duct→Q44.5
Agenesis1 unique routes
bile duct or passage→Q44.5
Anomaly, anomalous (congenital) (unspecified type)5 unique routes
biliary duct or passage→Q44.5
common duct→Q44.5
cystic duct→Q44.5
hepatic duct→Q44.5
liver
duct→Q44.5
Deformity4 unique routes
bile duct (common) (congenital) (hepatic)→Q44.5
biliary duct or passage (congenital)→Q44.5
cystic duct (congenital)→Q44.5
hepatic duct (congenital)→Q44.5
Dilatation2 unique routes
common duct (acquired)
congenital→Q44.5
cystic duct (acquired)
congenital→Q44.5
Distortion (s) (congenital)4 unique routes
bile duct or passage→Q44.5
common duct→Q44.5
cystic duct→Q44.5
hepatic duct→Q44.5
Duplication, duplex2 unique routes
biliary duct (any)→Q44.5
cystic duct→Q44.5
Elongated, elongation (congenital)1 unique routes
common bile duct→Q44.5

MS-DRG Classification

2026 v43.1

This code is grouped within the following Diagnosis Related Group(s) for clinical reimbursement:

DRG 441
Disorders of Liver Except Malignancy, Cirrhosis or Alcoholic Hepatitis with MCC
DRG 442
Disorders of Liver Except Malignancy, Cirrhosis or Alcoholic Hepatitis with CC
DRG 443
Disorders of Liver Except Malignancy, Cirrhosis or Alcoholic Hepatitis without CC/MCC

Cross Reference

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