Free Medical Coding > ICD10 CM > 2024 ICD-10-CM Codes > 2024 ICD-10-CM Codes Q00-Q99 – Congenital malformations, deformations and chromosomal abnormalities (Q00-Q99) > 2024 ICD-10-CM Codes Q20-Q28 – Congenital malformations of the circulatory system (Q20-Q28) > 2024 ICD-10-CM Codes Q25 – Congenital malformations of great arteries (Q25) > 2024 ICD-10-CM Codes Q25.2 – Atresia of aorta (Q25.2)