Q45.8

Other specified congenital malformations of digestive system

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

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 3

Q45.8code

Inclusion terms

Absence (complete) (partial) of alimentary tract NOS
Duplication of digestive system
Malposition, congenital of digestive system

Index entries leading here 14

Exstrophy
- abdominal contents Q45.8
Ectopic, ectopia (congenital)
- abdominal viscera Q45.8
Absence (of) (organ or part) (complete or partial)
- alimentary tract (congenital) Q45.8
- digestive organ (s) or tract, congenital Q45.8
Agenesis
- digestive organ (s) or tract (complete) (partial) NEC Q45.8
- alimentary tract (complete) (partial) NEC Q45.8
Atresia, atretic
- alimentary organ or tract NEC Q45.8
- digestive organs NEC Q45.8
Malposition
- congenital
  - alimentary tract Q45.8
  - gastrointestinal tract Q45.8
  - digestive organ or tract NEC Q45.8
- gastrointestinal tract, congenital Q45.8
Duplication, duplex — see also Accessory
- alimentary tract Q45.8
- digestive organs Q45.8
Patulous — see also Imperfect, closure (congenital)
- alimentary tract Q45.8
Malformation (congenital) — see also Anomaly
- alimentary tract Q45.9
  - specified type NEC Q45.8
- digestive system NEC, specified type NEC Q45.8
Hypoplasia, hypoplastic
- alimentary tract, congenital Q45.8
- digestive organ (s) or tract NEC Q45.8
Imperfect
- closure (congenital)
  - alimentary tract NEC Q45.8
Cyst (colloid) (mucous) (simple) (retention)
- omentum (lesser) K66.8
  - congenital Q45.8
Stricture — see also Stenosis
- digestive organs NEC, congenital Q45.8
Hydromphalos (since birth) Q45.8

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 Q45.9 Congenital malformation of digestive system, unspecified

Medications 5

1266 Digestive System Diseases drugs 147 Digestive System Neoplasms drugs 12 Nervous System Malformations 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.