Isomerism of atrial appendages

ValidICD-10-CM diagnosis code.

Valid for claims with a date of service in the current code year.

Valid FY2016 onwards.

What has happened to this code

Every change the publisher made, from 2007 to now. Entries marked draft are from the pre-implementation releases: ICD-10 took effect on 1 October 2015, so nothing before FY2016 was ever valid on a claim.

FY2007 Added to the draft code set draft Isomerism of atrial appendages

Official coding rules

Published by CDC for FY2027. A rule attached to a category binds every code beneath it, so the rules inherited from this code's ancestors are shown with the code they come from.

Inherited from Q20 Congenital malformations of cardiac chambers and connections

Excludes1 - never coded here

dextrocardia with situs inversus (Q89.3)
mirror-image atrial arrangement with situs inversus (Q89.3)

How CDC's index refers to this code

Wording from the official alphabetic index. Much of it appears nowhere in the code description, which is why a search for the everyday phrase so often finds nothing.

Isomerism atrial appendages

Codes in the same group

Code	Description	Status
Q20.0	Common arterial trunk	Valid
Q20.1	Double outlet right ventricle	Valid
Q20.2	Double outlet left ventricle	Valid
Q20.3	Discordant ventriculoarterial connection	Valid
Q20.4	Double inlet ventricle	Valid
Q20.5	Discordant atrioventricular connection	Valid
Q20.8	Other congenital malformations of cardiac chambers and connections	Valid
Q20.9	Congenital malformation of cardiac chambers and connections, unspecified	Valid