Atrial Septal Defect 4 C1969657
A congenital heart abnormality featuring a hole in the dividing wall of the atria. Can lead to increased blood flow to the lungs and strain on the heart. Outlook is generally positive with appropriate intervention when needed.
Key facts at a glance
- ICD-10
- I78.0
- ICD-11
- BA00.0
- Body system
- cardiovascular
- Severity
- moderate
- Chronic
- true
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Medically reviewed by WellAlly Editorial Team Last reviewed August 25, 2026. · Read our editorial policy