Congenital malformations of cardiac septa Q21-

Type 1 Excludes
Type 1 Excludes Help
A type 1 excludes note is a pure excludes. It means "not coded here". A type 1 excludes note indicates that the code excluded should never be used at the same time as Q21. A type 1 excludes note is for used for when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
  • acquired cardiac septal defect (
    ICD-10-CM Diagnosis Code I51.0

    Cardiac septal defect, acquired

      2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code Adult Dx (15-124 years)
    Applicable To
    • Acquired septal atrial defect (old)
    • Acquired septal auricular defect (old)
    • Acquired septal ventricular defect (old)
    Type 1 Excludes
    • cardiac septal defect as current complication following acute myocardial infarction (I23.1, I23.2)
Clinical Information
  • A congenital disorder characterized by the presence of an abnormal communication between the atria or the ventricles of the heart due to defects in the cardiac septum.
  • Abnormalities in any part of the heart septum resulting in abnormal communication between the left and the right chambers of the heart. The abnormal blood flow inside the heart may be caused by defects in the atrial septum, the ventricular septum, or both.
  • Defects in the cardiac septa, resulting in abnormal communications between the opposite chambers of the heart that exist at, and usually before, birth regardless of their causation.
  • Q21 Congenital malformations of cardiac septa
    • Q21.0 Ventricular septal defect
    • Q21.1 Atrial septal defect
      • Q21.10 …… unspecified
      • Q21.11 Secundum atrial septal defect
      • Q21.12 Patent foramen ovale
      • Q21.13 Coronary sinus atrial septal defect
      • Q21.14 Superior sinus venosus atrial septal defect
      • Q21.15 Inferior sinus venosus atrial septal defect
      • Q21.16 Sinus venosus atrial septal defect, unspecified
      • Q21.19 Other specified atrial septal defect
    • Q21.2 Atrioventricular septal defect
      • Q21.20 …… unspecified as to partial or complete
      • Q21.21 Partial atrioventricular septal defect
      • Q21.22 Transitional atrioventricular septal defect
      • Q21.23 Complete atrioventricular septal defect
    • Q21.3 Tetralogy of Fallot
    • Q21.4 Aortopulmonary septal defect
    • Q21.8 Other congenital malformations of cardiac septa
    • Q21.9 Congenital malformation of cardiac septum, unspecified