Q45.9

Congenital malformation of digestive system, unspecified

Billable FY2026 2025-10-01 → 2026-09-30

This is the unspecified option. 5 more specific codes sit alongside it. Worth checking whether the documentation supports one of them.

Exclusions 2 never code together

Q45code

Excludes2

congenital diaphragmatic hernia (Q79.0)Q79.0
congenital hiatus hernia (Q40.1)Q40.1

Excludes2 — not included here, but the patient may have both. Code both when documented.

Instructional notes 2

Q45.9code

Inclusion terms

Congenital anomaly of digestive system
Congenital deformity of digestive system

Index entries leading here 3

Anomaly, anomalous (congenital) (unspecified type) Q89.9
- alimentary tract Q45.9
- gastrointestinal tract Q45.9
- mesentery Q45.9
- digestive organ (s) or tract Q45.9
Malformation (congenital) — see also Anomaly
- alimentary tract Q45.9
Deformity Q89.9
- alimentary tract, congenital Q45.9
- digestive organ NOS Q45.9
- gastrointestinal tract (congenital) NOS Q45.9

Alongside this code 5 same parent — Q45

Q45.0 Agenesis, aplasia and hypoplasia of pancreas Q45.1 Annular pancreas Q45.2 Congenital pancreatic cyst Q45.3 Oth congenital malformations of pancreas and pancreatic duct Q45.8 Other specified congenital malformations of digestive system

Medications 4

1266 Digestive System Diseases drugs 147 Digestive System Neoplasms drugs 5 Digestive System Abnormalities drugs 2 Digestive System Fistula drugs

MED-RT files conditions by MeSH, which carves the world differently from ICD-10. These are name matches on this code's description, offered as candidates — not as an assertion that they are this code.

Additional references

AHA Coding Clinic® Licence required

Official coding advice for this code. Published by the American Hospital Association. Not included in this installation.

Risk adjustment

Maps to no condition category in any loaded model.

Presence is a property of the code. Untick a model to hide it everywhere.

This code

Billable: yes
Code set: FY2026
Parent: Q45
Block: Q38-Q45
Siblings: 5

Present FY2024–FY2027.