Q44.5 Other congenital malformations of bile ducts

The ICD-10-CM code for Other congenital malformations of bile ducts is Q44.5 (FY2026). It is a billable, claim-ready diagnosis code.

Classification

Chapter

17: Congenital malformations, deformations and chromosomal abnormalities (Q00-QA0)

Section

Q38-Q45: Other congenital malformations of the digestive system (Q38-Q45)

Category Q44

12 codes (10 billable)

FY2026 Status

Stable since FY2024

Also Known As

ICD-10-CM Alphabetic Index entries that lead to Q44.5:

• Accessory (congenital) › hepatic ducts
• Anomaly, anomalous (congenital) (unspecified type) › biliary duct or passage
• Accessory (congenital) › biliary duct or passage
• Anomaly, anomalous (congenital) (unspecified type) › common duct
• Agenesis › bile duct or passage
• Aberrant (congenital) › hepatic duct
• Absence (of) (organ or part) (complete or partial) › bile, biliary duct, congenital
• Accessory (congenital) › cystic duct

Inclusion Terms

• Accessory hepatic duct
• Biliary duct duplication
• Congenital malformation of bile duct NOS
• Cystic duct duplication

U.S. Hospital Utilization

• An estimated 785 U.S. inpatient stays in 2023 included Q44.5 among the documented diagnoses.

Source: National Inpatient Sample (NIS), Healthcare Cost and Utilization Project (HCUP), Agency for Healthcare Research and Quality, 2016–2023. National survey-weighted estimates.

Official Coding Guidelines

POA indicator for congenital conditions/anomalies and Q00-Q99 exception

Congenital conditions and anomalies Assign “Y” for congenital conditions and anomalies except for categories Q00- Q99, Congenital anomalies, which are on the exempt list. Congenital conditions are always considered present on admission.

Source: CMS — ICD-10-CM Official Guidelines for Coding and Reporting, FY2026

References

• CMS — ICD-10-CM Official Code Set and Guidelines, FY2026
• CDC/NCHS — ICD-10-CM Files and Browser Tool
• AHRQ — HCUP National Inpatient Sample, Frequencies by Diagnosis Code (2016–2023)

Cite This Page

Reference Q44.5 with the canonical source and edition:

Q44.5 — Other congenital malformations of bile ducts. ICD-10 Coding Pro (ICD-10-CM FY2026). https://icd10codingpro.com/codes/Q44.5

Canonical URL: https://icd10codingpro.com/codes/Q44.5