1. Q21 Congenital malformations of cardiac septa

    Excludes1

    • acquired cardiac septal defect (I51.0)
    1. Q21.0 Ventricular septal defect

      Inclusion term(s):

      • Roger's disease
    2. Q21.1 Atrial septal defect

      Inclusion term(s):

      • Coronary sinus defect
      • Patent or persistent foramen ovale
      • Patent or persistent ostium secundum defect (type II)
      • Patent or persistent sinus venosus defect
    3. Q21.2 Atrioventricular septal defect

      Inclusion term(s):

      • Common atrioventricular canal
      • Endocardial cushion defect
      • Ostium primum atrial septal defect (type I)
    4. Q21.3 Tetralogy of Fallot

      Inclusion term(s):

      • Ventricular septal defect with pulmonary stenosis or atresia, dextroposition of aorta and hypertrophy of right ventricle.
    5. Q21.4 Aortopulmonary septal defect

      Inclusion term(s):

      • Aortic septal defect
      • Aortopulmonary window
    6. Q21.8 Other congenital malformations of cardiac septa

      Inclusion term(s):

      • Eisenmenger's defect
      • Pentalogy of Fallot
    7. Q21.9 Congenital malformation of cardiac septum, unspecified

      Inclusion term(s):

      • Septal (heart) defect NOS
Abbreviations used here:

NEC Not elsewhere classifiable
This abbreviation in the Tabular List represents “other specified”. When a specific code is not available for a condition, the Tabular List includes an NEC entry under a code to identify the code as the “other specified” code.

NOS Not otherwise specified
This abbreviation is the equivalent of unspecified.