Secundum atrial septal defect

ValidICD-10-CM diagnosis code.

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

Valid FY2023 onwards.

What has happened to this code

Every change the publisher made, from 2023 to now.

FY2023 Added to the code set Secundum atrial septal defect

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 Q21 Congenital malformations of cardiac septa

Excludes1 - never coded here

acquired cardiac septal defect (I51.0)

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.

Cleft
Patent
Window
Missing
Patulous
Amputation
Nonclosure
Imperfect > fusion
Vestige, vestigial
Loss > organ or part
Pervious, congenital
Open, opening > false
Absence > toe > with foot
Deformity > atrial septal
Fenestration, fenestrated
Absence > congenital > septum
Closure > defective or imperfect NEC
Deformity > heart > septum > auricular
Defect, defective > septal NOS > atrial
Nonunion > organ or site, congenital NEC
Open, opening > abnormal, organ or site, congenital
Ostium > secundum
Patent > ostium secundum
Imperfect > closure > atrium
Defect, defective > ostium > secundum
Fenestration, fenestrated > atrial septum
Persistence, persistent > ostium > secundum
Defect, defective > atrial septal > ostium secundum type

Codes in the same group

Code	Description	Status
Q21.10	Atrial septal defect, unspecified	Valid
Q21.12	Patent foramen ovale	Valid
Q21.13	Coronary sinus atrial septal defect	Valid
Q21.14	Superior sinus venosus atrial septal defect	Valid
Q21.15	Inferior sinus venosus atrial septal defect	Valid
Q21.16	Sinus venosus atrial septal defect, unspecified	Valid
Q21.19	Other specified atrial septal defect	Valid