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IPCCC ICD-11 Congenital Heart Atlas

You are here: Aneurysm of the atrial septum Congenital anomaly of atrial septum Congenital anomaly of an atrium or atrial septum Structural developmental anomaly of heart or great vessels

IPCCC Term Aneurysm of the atrial septum
IPCCC Code 05.03.03
ICD-11 Code 100700036


A congenital cardiac finding in which the septum primum is abnormally large (redundant) and results in aneurysmal protrusion into one or both atria.


Atrial septal aneurysm

STS-EACTS-derived IPCCC term

Atrial septal abnormality, Aneurysm of atrial septum

EPCC-derived IPCCC term

Aneurysm of the atrial septum

ICD-11 MMS code or crossmap

LA8E.Y*: This ICD-11 Foundation term appears in ICD-11 MMS only as an index term under “Other specified congenital anomaly of atrial septum". If using MMS to code, the Foundation term can be crossmapped to LA8E.Y

ICD-10 MMS code or crossmap

Q21.8**: This Foundation term is not in ICD-10. If using ICD-10 to code, crossmap to higher order term "Other congenital malformations of cardiac septa" with code Q21.8


Congenital anomaly of atrial septum


Coding Notes


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