Q44.5 — Other congenital malformations of bile ducts
Is Q44.5 billable?
Yes — Q44.5 is billable for FY2027. Q44.5 is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. Q44.5 may be submitted for encounters from October 1, 2026 through September 30, 2027.
Q44.5 at a glance
| Code | Q44.5 |
|---|---|
| Description | Other congenital malformations of bile ducts |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Which MS-DRGs does Q44.5 group to?
Q44.5 sits in MDC 07 and helps define the logic of 3 MS-DRGs (version 44, FY2027). Which one a stay actually groups to also depends on procedures and secondary diagnoses.
- 441Disorders of Liver Except Malignancy, Cirrhosis or Alcoholic Hepatitis with MCCmedical
- 442Disorders of Liver Except Malignancy, Cirrhosis or Alcoholic Hepatitis with CCmedical
- 443Disorders of Liver Except Malignancy, Cirrhosis or Alcoholic Hepatitis without CC/MCCmedical
As a secondary diagnosis, Q44.5 is a complication or comorbidity (CC), which can move a stay into a higher-paying DRG.
How is Q44.5 listed in the Alphabetic Index?
These are the routes through the Alphabetic Index that lead to Q44.5. They show the wording a clinician may have documented, which often differs from the Tabular description.
- Aberrant › hepatic duct (congenital)
- Absence › bile, biliary duct, congenital (of) (organ or part) (complete or partial)
- Accessory › biliary duct or passage (congenital)
- Accessory › cystic duct (congenital)
- Accessory › hepatic ducts (congenital)
- Agenesis › bile duct or passage
- Anomaly, anomalous › biliary duct or passage (congenital) (unspecified type)
- Anomaly, anomalous › common duct (congenital) (unspecified type)
- Anomaly, anomalous › cystic duct (congenital) (unspecified type)
- Anomaly, anomalous › hepatic duct (congenital) (unspecified type)
- Deformity › bile duct
- Deformity › biliary duct or passage
Inclusion terms
Alternative wording in documentation that is classified to Q44.5.
- Accessory hepatic duct
- Biliary duct duplication
- Congenital malformation of bile duct NOS
- Cystic duct duplication
Excludes2 — not included here — inherited from Chapter 17
The conditions below are not part of Q44.5, but a patient may have both at the same time. When documentation supports it, Q44.5 and the excluded code may both be reported.
- inborn errors of metabolism (E70-E88)
How long has Q44.5 existed?
Q44.5 has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.
Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.