Q20-Q28 ICD-10-CA block: Congenital malformations of the circulatory system
Q20-Q28 isn’t a code on its own. Choose one of the 81 codes beneath it, the one the documentation supports.
Official description
Q20-Q28Congenital malformations of the circulatory system (Q20-Q28)
ICD-10-CA · Canada
Codes in Q20-Q28
Q20-Q28 isn’t a code on its own. Open the group that matches what the note documents.
Q20Congenital malformations of cardiac chambers and connections (13 codes)Q21Congenital malformations of cardiac septa (7 codes)Q22Congenital malformations of pulmonary and tricuspid valves (9 codes)Q23Congenital malformations of aortic and mitral valves (7 codes)Q24Other congenital malformations of heart (9 codes)Q25Congenital malformations of great arteries (10 codes)Q26Congenital malformations of great veins (9 codes)Q27Other congenital malformations of peripheral vascular system (11 codes)Q28Other congenital malformations of circulatory system (6 codes)Notes for Q20-Q28
As CIHI prints them, with any note Q20-Q28 takes from the headings above it.
Excludes
Conditions classified elsewhere.
- Inborn errors of metabolism (E70-E90)From Chapter 17: Congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
Where Q20-Q28 sits
- 1ChapterChapter 17: Congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
- 2Block Q20-Q28Congenital malformations of the circulatory system
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
Is Q20-Q28 a valid ICD-10-CA code?
No. Q20-Q28 (Congenital malformations of the circulatory system) is a block heading in CIHI’s ICD-10-CA FY 2026–2027 release. It holds 81 codes; record the one the documentation supports.
Where is Q20-Q28 in ICD-10-CA?
Q20-Q28 sits under Chapter 17: Congenital malformations, deformations and chromosomal abnormalities (Q00-Q99).
What coding notes apply to Q20-Q28?
ICD-10-CA lists Excludes notes for Q20-Q28, 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 Q20-Q28
Q00-Q07Congenital malformations of the nervous systemQ10-Q18Congenital malformations of eye, ear, face and neckQ30-Q34Congenital malformations of the respiratory systemQ35-Q37Cleft lip and cleft palateQ38-Q45Other congenital malformations of the digestive systemQ50-Q56Congenital malformations of genital organsQ60-Q64Congenital malformations of the urinary systemQ65-Q79Congenital malformations and deformations of the musculoskeletal systemQ80-Q89Other congenital malformationsQ90-Q99Chromosomal abnormalities, not elsewhere classified