Q26.8 ICD-10-CA code: Other congenital malformations of great veins
Q26.8 is the ICD-10-CA code for “Other congenital malformations of great veins” in CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026.
Official description
Q26.8Other congenital malformations of great veins
Short description: Oth congenital malformations great veins
ICD-10-CA · Canada · Also written Q268
Index terms
Entries in CIHI’s alphabetical index that lead to Q26.8. Searching the index by the condition the note names is how coders reach this code.
- Scimitar syndrome
- Syndrome, scimitar
- Atresia, atretic, vein NEC, great
- Azygos, continuation inferior vena cava
- Agenesis, vein(s) (peripheral), great NEC
- Agenesis, vena cava (inferior) (superior)
- Atresia, atretic, vena cava (inferior) (superior)
- Hypoplasia, hypoplastic, vein(s) (peripheral), great
- Malposition, congenital, vein(s) (peripheral), great
- Hypoplasia, hypoplastic, vena cava (inferior) (superior)
- Malposition, congenital, vena cava (inferior) (superior)
- Anomaly, anomalous (congenital) (unspecified type), venous return
- Persistence, persistent (congenital), left, posterior cardinal vein
- Absence (organ or part) (complete or partial), superior vena cava, congenital
- Absence (organ or part) (complete or partial), vein (peripheral), congenital, great
- Absence (organ or part) (complete or partial), vena cava (inferior) (superior), congenital
- Anomaly, anomalous (congenital) (unspecified type), vein(s) (peripheral), great, specified NEC
- Persistence, persistent (congenital), sinus, venosus with imperfect incorporation in right auricle
Notes for Q26.8
As CIHI prints them, with any note Q26.8 takes from the headings above it.
Includes
- Absence of vena cava (inferior)(superior)Azygos continuation of inferior vena cavaPersistent left posterior cardinal veinScimitar syndrome
Excludes
Conditions classified elsewhere.
- Inborn errors of metabolism (E70-E90)From Chapter 17: Congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
Where Q26.8 sits
- 1ChapterChapter 17: Congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
- 2Block Q20-Q28Congenital malformations of the circulatory system
- 3Category Q26Congenital malformations of great veins
- 4Valid code Q26.8Other congenital malformations of great veins
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 Q26.8 mean?
Q26.8 is the ICD-10-CA code for “Other congenital malformations of great veins” in CIHI’s ICD-10-CA FY 2026–2027 release.
Where is Q26.8 in ICD-10-CA?
Q26.8 sits under Q26 Congenital malformations of great veins, within Q20-Q28 Congenital malformations of the circulatory system, within Chapter 17: Congenital malformations, deformations and chromosomal abnormalities (Q00-Q99).
What coding notes apply to Q26.8?
ICD-10-CA lists Includes, Excludes notes for Q26.8, 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.
Codes beside Q26.8
View Q26Q26.0Congenital stenosis of vena cavaQ26.1Persistent left superior vena cavaQ26.2Total anomalous pulmonary venous connectionQ26.3Partial anomalous pulmonary venous connectionQ26.4Anomalous pulmonary venous connection, unspecifiedQ26.5Anomalous portal venous connectionQ26.6Portal vein-hepatic artery fistulaQ26.9Congenital malformation of great vein, unspecified