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ALL MEDICAL CODES IN CATEGORY Congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)Congenital malformations of the circulatory system (Q20-Q28) Congenital malformations of cardiac septa (Q21)Complete atrioventricular septal defect (Q21.23)

2025 ICD-10-CM code Q21.23

Complete atrioventricular septal defect. This is a heart defect present at birth involving a hole in the wall separating all four chambers of the heart.