Q44.2 Atresia of bile ducts

Billable ICD-10-CM code, FY2026. Acts as a Major Complication or Comorbidity (MCC) as a secondary diagnosis. Exempt from present-on-admission (POA) reporting.

Risk adjustment (HCC)

• CMS-HCC V28: HCC 68 — Cholangitis and Obstruction of Bile Duct Without Gallstones

MS-DRG index

Defines the logic of DRG(s) 444-446 in MDC 07.

Approximate ICD-9-CM (GEMs)

• 751.61 Biliary atresia (approximate)

Diagnosis Index entries for Q44.2

• Atresia, atretic › bile duct (common) (congenital) (hepatic)
• Atresia, atretic › common duct
• Atresia, atretic › cystic duct
• Impervious (congenital) › bile duct

Nearby codes

• Q44 Congenital malformations of gallbladder, bile ducts and liver
• Q44.0 Agenesis, aplasia and hypoplasia of gallbladder
• Q44.1 Other congenital malformations of gallbladder
• Q44.2 Atresia of bile ducts (this code)
• Q44.3 Congenital stenosis and stricture of bile ducts
• Q44.4 Choledochal cyst
• Q44.5 Other congenital malformations of bile ducts
• Q44.6 Cystic disease of liver
• Q44.7 Other congenital malformations of liver