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IPCCC ICD-11 Congenital Heart Atlas

You are here: Interatrial communication through coronary sinus orifice Interatrial communication Congenital anomaly of atrial septum Congenital anomaly of an atrium or atrial septum Structural developmental anomaly of heart or great vessels

IPCCC Term Interatrial communication through coronary sinus orifice
IPCCC Code 05.05.03
ICD-11 Code 664625334


A congenital cardiovascular malformation in which there is a communication between the left atrium and the coronary sinus allowing interatrial communication through the coronary sinus ostium.


Coronary sinus atrial septal defect

STS-EACTS-derived IPCCC term

ASD, Coronary sinus (Interatrial communication [ASD] through coronary sinus orifice)

EPCC-derived IPCCC term

Interatrial communication (ASD) through coronary sinus orifice

ICD-11 MMS code or crossmap


ICD-10 MMS code or crossmap

Q21.1: Atrial septal defect (includes "Coronary sinus defect")


Interatrial communication


Coding Notes

"Interatrial communication through coronary sinus orifice" may or may not be associated with a persistent left superior caval vein (superior vena cava). This occurs in the absence of the coronary sinus (total unroofing of the coronary sinus) or partial unroofing of the coronary sinus.