ICD-10-CM › Q00-QA1 › Q20-Q28 › Q21 Congenital malformations of cardiac septa › Q21.4
Aortopulmonary septal defect
ValidICD-10-CM diagnosis code.
Valid for claims with a date of service in the current code year.
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 Aortopulmonary 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
- Stump
- Patent
- Window
- Aplasia
- Missing
- Patulous
- Amputation
- Nonclosure
- Rudimentary
- Disarticulation
- Imperfect > fusion
- Loss > organ or part
- Pervious, congenital
- Open, opening > false
- Absence > toe > with foot
- Fenestration, fenestrated
- Absence > congenital > septum
- Closure > defective or imperfect NEC
- Absence > congenital > organ or site NEC
- Nonunion > organ or site, congenital NEC
- Unilateral > organ or site, congenital NEC
- Open, opening > abnormal, organ or site, congenital
- Window > aorticopulmonary
- Defect, defective > aorticopulmonary septum
- Fenestration, fenestrated > aortico-pulmonary
- Imperfect > closure > septum > aorticopulmonary
- Absence > septum > between aorta and pulmonary artery
- Agenesis > septum > between aorta and pulmonary artery
- Communication > between > base of aorta and pulmonary artery
- Imperfect > closure > septum > between aorta and pulmonary artery
Codes in the same group
| Code | Description | Status |
|---|---|---|
| Q21.0 | Ventricular septal defect | Valid |
| Q21.1 | Atrial septal defect | Not billable |
| Q21.2 | Atrioventricular septal defect | Not billable |
| Q21.3 | Tetralogy of Fallot | Valid |
| Q21.8 | Other congenital malformations of cardiac septa | Valid |
| Q21.9 | Congenital malformation of cardiac septum, unspecified | Valid |