Q40.1 ICD-10-CA code: Congenital hiatus hernia
Q40.1 is the ICD-10-CA code for “Congenital hiatus hernia” in CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026.
Official description
Q40.1Congenital hiatus hernia
ICD-10-CA · Canada · Also written Q401
Index terms
Entries in CIHI’s alphabetical index that lead to Q40.1. Searching the index by the condition the note names is how coders reach this code.
- Hernia, hernial (acquired) (recurrent), paraesophageal, congenital
- Hernia, hernial (acquired) (recurrent), esophageal hiatus, congenital
- Displacement, displaced, cardia through esophageal hiatus (congenital)
- Hernia, hernial (acquired) (recurrent), hiatal (esophageal) (sliding), congenital
Notes for Q40.1
As CIHI prints them, with any note Q40.1 takes from the headings above it.
Includes
- Displacement of cardia through oesophageal hiatus
Excludes
Conditions classified elsewhere.
- Congenital diaphragmatic hernia (Q79.0)
- Inborn errors of metabolism (E70-E90)From Chapter 17: Congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
Where Q40.1 sits
- 1ChapterChapter 17: Congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
- 2Block Q38-Q45Other congenital malformations of the digestive system
- 3Category Q40Other congenital malformations of upper alimentary tract
- 4Valid code Q40.1Congenital hiatus hernia
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 Q40.1 mean?
Q40.1 is the ICD-10-CA code for “Congenital hiatus hernia” in CIHI’s ICD-10-CA FY 2026–2027 release.
Where is Q40.1 in ICD-10-CA?
Q40.1 sits under Q40 Other congenital malformations of upper alimentary tract, 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 Q40.1?
ICD-10-CA lists Includes, Excludes notes for Q40.1, 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.