Q44.5Other congenital malformations of bile ducts

Q44.5 is the ICD-10-CM diagnosis code for other congenital malformations of bile ducts. It belongs to category Q44 (congenital malformations of gallbladder, bile ducts and liver), block Q38-Q45 (other congenital malformations of the digestive system) and chapter 17 (congenital malformations, deformations, chromosomal abnormalities, and genetic disorders). It is billable, so it can be reported on its own for dates of service from October 1, 2026 through September 30, 2027.

Within Q44, choose Q44.5 (Other congenital malformations of bile ducts) only when documentation doesn't support a more specific option: agenesis, aplasia and hypoplasia of gallbladder (Q44.0), other congenital malformations of gallbladder (Q44.1), atresia of bile ducts (Q44.2), congenital stenosis and stricture of bile ducts (Q44.3), Choledochal cyst (Q44.4), cystic disease of liver (Q44.6) and other congenital malformations of liver (Q44.7).

As a secondary diagnosis it is a CC (complication or comorbidity), which can move an inpatient stay into the "with CC" MS-DRG of its family, unless the principal diagnosis excludes it.

In MS-DRG v44.0, it is part of the grouping logic for DRG 441 (Disorders of Liver Except Malignancy, Cirrhosis or Alcoholic Hepatitis with MCC, relative weight 1.8219), DRG 442 (Disorders of Liver Except Malignancy, Cirrhosis or Alcoholic Hepatitis with CC, relative weight 0.9602) and DRG 443 (Disorders of Liver Except Malignancy, Cirrhosis or Alcoholic Hepatitis without CC/MCC, relative weight 0.6885), in MDC 07 (Diseases and Disorders of the Hepatobiliary System and Pancreas), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.

It is exempt from present-on-admission (POA) reporting, so no POA indicator is required.

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Before ICD-10, this condition was coded in ICD-9-CM as 751.60 (unspecified anomaly of gallbladder, bile ducts, and liver) and 751.69 (other anomalies of gallbladder, bile ducts, and liver).