Q21.1
Non-billableAtrial septal defect
Atrial septal defect
This is a header/category code. For billing purposes, use a more specific child code from the list below.
Coding Notes
Excludes 1
Codes that cannot be used together with this code (mutual exclusion)
Excludes 2
Conditions not included here, but the patient may have both
Child Codes (8)
Q21.10Atrial septal defect, unspecified
Q21.11Secundum atrial septal defect
Q21.12Patent foramen ovale
Q21.13Coronary sinus atrial septal defect
Q21.14Superior sinus venosus atrial septal defect
Q21.15Inferior sinus venosus atrial septal defect
Q21.16Sinus venosus atrial septal defect, unspecified
Q21.19Other specified atrial septal defect
Related Codes(6)
ICD-11 Equivalents(1)
ICD-11 Equivalents
View full mappingCorresponding ICD-11 codes from the WHO crosswalk mapping
Also Known As / Clinical Terms(35)
UMLS
- ASDC0018817
- ASD - Atrial septal defectC0018817
- An opening in the wall separating the top two chambers of the heartC0018817
- Atria septal defectC0018817
- Atria septal defect (ASD)C0018817
- Atrial Septal DefectC0018817
- Atrial Septal DefectsC0018817
- Atrial septal defectC0018817
- Atrial septal defect (ASD)C0018817
- Atrial septal defect (disorder)C0018817
- Atrial septal defect NOSC0018817
- Atrial septal defect, unspecifiedC0018817
- Atrial septal defectsC0018817
- Atrial septum defectC0018817
- Atrioseptal defectC0018817
- Congenital atrial septal defectC0018817
- Congenital atrial septal defect (disorder)C0018817
- Defect in the atrial septumC0018817
- Defect, Atrial SeptalC0018817
- Heart Septal Defects, AtrialC0018817
- Heart septal defect atrialC0018817
- Hole in heart wall separating two upper heart chambersC0018817
- Interatrial septal defectC0018817
- Interauricular septal defectC0018817
- Interauricular septal defect (disorder)C0018817
- Septal Defect, AtrialC0018817
- Septal defect interatrialC0018817
- asdC0018817
- atrial septal defectC0018817
- atrial septal defect (ASD)C0018817
- atrial septal defectsC0018817
- atrial septal heart defectC0018817
- atrial septal heart defectsC0018817
- atrioseptal defectC0018817
- interatrial septal defectC0018817
Frequently Asked Questions
What is the ICD-10 code for atrial septal defect?
The ICD-10-CM code for atrial septal defect is Q21.1. The full clinical description is "Atrial septal defect". Q21.1 is a non-billable header code. Use a more specific child code for billing purposes.
What does ICD-10 code Q21.1 mean?
ICD-10-CM code Q21.1 represents “Atrial septal defect”. It is classified under Chapter 17: Congenital Malformations, Deformations and Chromosomal Abnormalities and is a non-billable header code. Use a more specific child code for billing purposes.
Is Q21.1 a billable code?
No, Q21.1 is a non-billable header code. You need to use one of its more specific child codes for billing. There are 8 child codes under Q21.1.
What chapter is Q21.1 in?
Q21.1 is in Chapter 17: Congenital Malformations, Deformations and Chromosomal Abnormalities (codes Q00-Q99).
What codes cannot be used with Q21.1?
Q21.1 has Excludes1 notes indicating codes that cannot be used together with it, including: acquired cardiac septal defect (I51.0).
What are the subcategories under Q21.1?
Q21.1 has 8 child codes, including: Q21.10 (Atrial septal defect, unspecified), Q21.11 (Secundum atrial septal defect), Q21.12 (Patent foramen ovale), Q21.13 (Coronary sinus atrial septal defect), and 4 more.
What are the UMLS CUIs for Q21.1?
Q21.1 is linked to 1 UMLS Concept Unique Identifier: C0018817. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.
How does Q21.1 relate to ICF functioning codes?
ICF (International Classification of Functioning, Disability and Health) codes describe how conditions like atrial septal defect affect a person's functioning: body functions, activities, participation, and environmental factors. AutoICD provides ICF Core Sets for 12+ conditions and can map clinical text to ICF categories automatically. Browse the ICF directory to explore functioning codes.
What is the ICD-11 equivalent of Q21.1?
Q21.1 maps to the ICD-11 code: LA8E.Z (Congenital anomaly of atrial septum, unspecified).
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Includes SNOMED Clinical Terms® (SNOMED CT®) used by permission of SNOMED International. Includes content from the UMLS Metathesaurus, courtesy of the U.S. National Library of Medicine.