ICD-10-CM
Q21.10 - Atrial septal defect, unspecified
Code
Q21.10 - Atrial septal defect, unspecified
[Billable] [POA Exempt]
[Billable] [POA Exempt]
Code Tree
Q00-QA0 - Congenital malformations, deformations, chromosomal abnormalities, and genetic disorders
- Q20-Q28 - Congenital malformations of the circulatory system
- Q21 - Congenital malformations of cardiac septa
- Q21.1 - Atrial septal defect
- 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
- Q21.19 - Other specified atrial septal defect
- Q21.1 - Atrial septal defect
- Q21 - Congenital malformations of cardiac septa
Citation
"Q21.10 - Atrial Septal Defect, Unspecified." ICD-10-CM, 10th ed., Centers for Medicare and Medicaid Services and the National Center for Health Statistics, 2026. www.unboundmedicine.com/icd/view/ICD-10-CM/1430962/all/Q21_10___Atrial_septal_defect__unspecified.
Q21.10 - Atrial septal defect, unspecified. ICD-10-CM. Centers for Medicare and Medicaid Services and the National Center for Health Statistics; 2026. https://www.unboundmedicine.com/icd/view/ICD-10-CM/1430962/all/Q21_10___Atrial_septal_defect__unspecified. Accessed August 6, 2026.
Q21.10 - Atrial septal defect, unspecified. (2026). In ICD-10-CM (10th ed.). Centers for Medicare and Medicaid Services and the National Center for Health Statistics. https://www.unboundmedicine.com/icd/view/ICD-10-CM/1430962/all/Q21_10___Atrial_septal_defect__unspecified
Q21.10 - Atrial Septal Defect, Unspecified [Internet]. In: ICD-10-CM. Centers for Medicare and Medicaid Services and the National Center for Health Statistics; 2026. [cited 2026 August 06]. Available from: https://www.unboundmedicine.com/icd/view/ICD-10-CM/1430962/all/Q21_10___Atrial_septal_defect__unspecified.
* Article titles in AMA citation format should be in sentence-case
TY - ELEC
T1 - Q21.10 - Atrial septal defect, unspecified
ID - 1430962
BT - ICD-10-CM
UR - https://www.unboundmedicine.com/icd/view/ICD-10-CM/1430962/all/Q21_10___Atrial_septal_defect__unspecified
PB - Centers for Medicare and Medicaid Services and the National Center for Health Statistics
ET - 10
DB - ICD-10-CM
DP - Unbound Medicine
ER -
