ICD-10 Code: Q21.1 – Atrial septal defect

ICD-10 code Q21.1 corresponds to Atrial septal defect. This code is classified under the chapter Q21 Congenital malformations of cardiac septa, which is part of the Q20-Q28: Congenital malformations of the circulatory system category.

The parent chapter is Congenital malformations, deformations and chromosomal abnormalities.