Q45.9 ICD-10-CA code: Congenital malformation of digestive system, unspecified
Q45.9 is the ICD-10-CA code for “Congenital malformation of digestive system, unspecified” in CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026.
Official description
Q45.9Congenital malformation of digestive system, unspecified
Short description: Congen malformation digestive system NOS
ICD-10-CA · Canada · Also written Q459
Index terms
Entries in CIHI’s alphabetical index that lead to Q45.9. Searching the index by the condition the note names is how coders reach this code.
- Deformity, alimentary tract, congenital
- Deformity, gastrointestinal tract (congenital)
- Anomaly, anomalous (congenital) (unspecified type), mesentery
- Anomaly, anomalous (congenital) (unspecified type), alimentary tract
- Anomaly, anomalous (congenital) (unspecified type), gastrointestinal tract NEC
- Anomaly, anomalous (congenital) (unspecified type), digestive organ(s) or tract NEC
Notes for Q45.9
As CIHI prints them, with any note Q45.9 takes from the headings above it.
Includes
- Congenital: anomaly, deformity — NOS of digestive system
Excludes
Conditions classified elsewhere.
- Congenital:• diaphragmatic hernia (Q79.0)• hiatus hernia (Q40.1)From Q45 Other congenital malformations of digestive system
- Inborn errors of metabolism (E70-E90)From Chapter 17: Congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
Where Q45.9 sits
- 1ChapterChapter 17: Congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
- 2Block Q38-Q45Other congenital malformations of the digestive system
- 3Category Q45Other congenital malformations of digestive system
- 4Valid code Q45.9Congenital malformation of digestive system, unspecified
Source and release
- Data release
- ICD-10-CA · FY 2026–2027
- Effective date
- Apr 1, 2026
- Publisher
- CIHI
This page is built from the ICD-10-CA catalog that Vero Codes reads when it suggests codes: Canadian Institute for Health Information’s FY 2026–2027 release, imported from the publisher’s file and checked against it. The description, notes and structured data come from the same record.
Frequently asked questions
What does ICD-10-CA code Q45.9 mean?
Q45.9 is the ICD-10-CA code for “Congenital malformation of digestive system, unspecified” in CIHI’s ICD-10-CA FY 2026–2027 release.
Where is Q45.9 in ICD-10-CA?
Q45.9 sits under Q45 Other congenital malformations of digestive system, within Q38-Q45 Other congenital malformations of the digestive system, within Chapter 17: Congenital malformations, deformations and chromosomal abnormalities (Q00-Q99).
What coding notes apply to Q45.9?
ICD-10-CA lists Includes, Excludes notes for Q45.9, including those from the headings it sits under. They are listed on this page with where each one comes from.
Which ICD-10-CA release does this page use?
It uses CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026 to Mar 31, 2027. It is a reference: confirm the code against the current list and the payer’s rules before you submit it.