ICD-10-CM Book 2025 Edition
Chapters ICD-10-CM Book Table of Content /
Q20-Q28 Congenital malformations of the circulatory system /
Q21 Congenital malformations of cardiac septa
Billable ICD-10-CM Code Q21.19
Q21.19
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Other specified atrial septal defect 
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Common atrium
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Other specified atrial septal abnormality
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