Q21.19
Other specified atrial septal defect
Billable FY2026 2025-10-01 → 2026-09-30
Exclusions 2 never code together
Excludes1 — never code together. The excluded condition and this one are mutually exclusive.
Excludes2 — not included here, but the patient may have both. Code both when documented.
Instructional notes 2
Q21.19code
Inclusion terms
- Common atrium
- Other specified atrial septal abnormality
Index entries leading here 16
- Abnormal, abnormality, abnormalities — see also Anomaly
- atrial septal, specified NEC Q21.19
- Absence (of) (organ or part) (complete or partial)
- Acleistocardia Q21.19
- Agenesis
- septum
- atrial Q21.19
- septum
- Anomaly, anomalous (congenital) (unspecified type) Q89.9
- Fusion, fused (congenital)
- Imperfect
- Defect, defective Q89.9
- Perforation, perforated (nontraumatic) (of)
- atrial septum, multiple Q21.19
- Common
- atrium Q21.19
- Cor
- Closure
- interauricular septum, defective Q21.19
- Disease, diseased — see also Syndrome
- Lutembacher's (atrial septal defect with mitral stenosis) Q21.19
- Patent — see also Imperfect, closure
- interauricular septum Q21.19
- Syndrome — see also Disease
- Lutembacher's Q21.19
- Lutembacher's disease or syndrome (atrial septal defect with mitral stenosis) Q21.19
Alongside this code 7 same parent — Q21.1
Q21.10 Atrial septal defect, unspecified Q21.11 Secundum atrial septal defect Q21.12 Patent foramen ovale Q21.13 Coronary sinus atrial septal defect Q21.14 Superior sinus venosus atrial septal defect Q21.15 Inferior sinus venosus atrial septal defect Q21.16 Sinus venosus atrial septal defect, unspecified
Additional references
AHA Coding Clinic® Licence required
Official coding advice for this code. Published by the American Hospital Association. Not included in this installation.