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Start free with EleplanAtrial septal aneurysm
ORPHA:99107Morphological anomaly
What it is
A rare congenital non-syndromic heart malformation characterized by an abnormal protrusion of the interatrial septum into the right or left atrium, or both, during the cardiorespiratory cycle. The defect may be limited to the fossa ovalis or involve the entire septum. It can present as an isolated finding but is more often associated with interatrial shunts, in particular patent foramen ovale. Clinically it increases the risk of peripheral arterial embolism and stroke.
Key facts
- Classified as
- Morphological anomaly
ICD-10 codes
ICD-10 has no distinct code for most rare diseases, so many are filed under the nearest available one. A shared code identifies the group, not this disease — the ORPHAcode above is what identifies it.
Related health topics
Reached through the ICD-10 categories this disease is filed under, so these describe the broader group rather than this disease specifically.
Cross-references
Orphadata Science: Free access data from Orphanet. © INSERM 1999. Data version 2026-06-23. Available under CC BY 4.0. This is a reference, not medical advice.
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