Current
Q21 — Congenital malformations of cardiac septa
Part of Chapter 17: Congenital malformations, deformations, chromosomal abnormalities, and genetic disorders , block Congenital malformations of the circulatory system (Q20-Q28) .
Official Notes
Excludes1
acquired cardiac septal defect ( I51.0 )
Child Codes
- Q21.0 Ventricular septal defect Billable
- Q21.1 Atrial septal defect Has subcodes
- Q21.2 Atrioventricular septal defect Has subcodes
- Q21.3 Tetralogy of Fallot Billable
- Q21.4 Aortopulmonary septal defect Billable
- Q21.8 Other congenital malformations of cardiac septa Billable
- Q21.9 Congenital malformation of cardiac septum, unspecified Billable
Referenced By
Official notes on these codes cite Q21.
FY 2027 effective October 1, 2026 · CDC NCHS and CMS