`Q21.2` Atrioventricular septal defect

Non-billable header with 4 child codes.

Applicable to

Atrioventricular canal defect
Endocardial cushion defect
Ostium primum atrial septal defect (type I)

Applies from Q21 Congenital malformations of cardiac septa

Excludes1 (never code together)

acquired cardiac septal defect (I51.0)

Codes under Q21.2

Q21.20 Atrioventricular septal defect, unspecified as to partial or complete
Q21.21 Partial atrioventricular septal defect
Q21.22 Transitional atrioventricular septal defect
Q21.23 Complete atrioventricular septal defect

Approximate ICD-9-CM (GEMs)

745.60 Endocardial cushion defect, unspecified type (approximate)
745.61 Ostium primum defect (approximate)
745.69 Other endocardial cushion defects (approximate)

Code annotations containing back-references to Q21.2

Back-references to Q21.2

Code Also: Q90 Down syndrome ("associated physical condition(s), such as atrioventricular septal defect (Q21.2-)")

Back-references to Q21

Code Also: I27.21 Secondary pulmonary arterial hypertension ("congenital heart disease (Q20-Q28)")
Type 2 Excludes: P29 Cardiovascular disorders originating in the perinatal period ("congenital malformations of the circulatory system (Q20-Q28)")
Code Also: Q87.85 MED13L syndrome ("congenital malformations of cardiac septa (Q21.-)")
Code Also: Z71.87 Encounter for pediatric-to-adult transition counseling ("congenital malformations of the circulatory system (Q20-Q28)")

Nearby codes

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 (this code)
Q21.20 Atrioventricular septal defect, 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