Congenital malformations of cardiac septa (Q21)

• ICD-10 Index

  • Congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)

    • Congenital malformations of the circulatory system (Q20-Q28)

      • Congenital malformations of cardiac septa (Q21)

        • Q21 - Congenital malformations of cardiac septa NON-BILLABLE CODE
        • Q21.0 - Ventricular septal defect BILLABLE CODE
        • Q21.1 - Atrial septal defect NON-BILLABLE CODE NEW CODE
        • Q21.10 - Atrial septal defect, unspecified BILLABLE CODE NEW CODE
        • Q21.11 - Secundum atrial septal defect BILLABLE CODE NEW CODE
        • Q21.12 - Patent foramen ovale BILLABLE CODE NEW CODE
        • Q21.13 - Coronary sinus atrial septal defect BILLABLE CODE NEW CODE
        • Q21.14 - Superior sinus venosus atrial septal defect BILLABLE CODE NEW CODE
        • Q21.15 - Inferior sinus venosus atrial septal defect BILLABLE CODE NEW CODE
        • Q21.16 - Sinus venosus atrial septal defect, unspecified BILLABLE CODE NEW CODE
        • Q21.19 - Other specified atrial septal defect BILLABLE CODE NEW CODE
        • Q21.2 - Atrioventricular septal defect NON-BILLABLE CODE NEW CODE
        • Q21.20 - Atrioventricular septal defect, unsp as to part or complete BILLABLE CODE NEW CODE
        • Q21.21 - Partial atrioventricular septal defect BILLABLE CODE NEW CODE
        • Q21.22 - Transitional atrioventricular septal defect BILLABLE CODE NEW CODE
        • Q21.23 - Complete atrioventricular septal defect BILLABLE CODE NEW CODE
        • Q21.3 - Tetralogy of Fallot BILLABLE CODE
        • Q21.4 - Aortopulmonary septal defect BILLABLE CODE
        • Q21.8 - Other congenital malformations of cardiac septa BILLABLE CODE
        • Q21.9 - Congenital malformation of cardiac septum, unspecified BILLABLE CODE

Clinical Information for Congenital malformations of cardiac septa (Q21)

Aortopulmonary Septal Defect - A developmental abnormality in which the spiral (aortopulmonary) septum failed to completely divide the TRUNCUS ARTERIOSUS into ASCENDING AORTA and PULMONARY ARTERY. This abnormal communication between the two major vessels usually lies above their respective valves (AORTIC VALVE; PULMONARY VALVE).

Tetralogy of Fallot - A combination of congenital heart defects consisting of four key features including VENTRICULAR SEPTAL DEFECTS; PULMONARY STENOSIS; RIGHT VENTRICULAR HYPERTROPHY; and a dextro-positioned AORTA. In this condition, blood from both ventricles (oxygen-rich and oxygen-poor) is pumped into the body often causing CYANOSIS.

Tetralogy of Fallot - A combination of congenital heart defects consisting of four key features including VENTRICULAR SEPTAL DEFECTS; PULMONARY STENOSIS; RIGHT VENTRICULAR HYPERTROPHY; and a dextro-positioned AORTA. In this condition, blood from both ventricles (oxygen-rich and oxygen-poor) is pumped into the body often causing CYANOSIS.

Endarteritis - Inflammation of the inner endothelial lining (TUNICA INTIMA) of an artery.

Tunica Intima - The innermost layer of an artery or vein, made up of one layer of endothelial cells and supported by an internal elastic lamina.

Instructional Notations

Type 1 Excludes Type 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.

• acquired cardiac septal defect I51.0