Q21.10

Billable

Atrial septal defect, unspecified

Atrial septal defect, unspecified

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

Related Codes(7)
Also Known As / Clinical Terms(120)

SNOMED CT

Clinical Terms

  • Atrial septum defect
  • Atria septal defect
  • Ebstein's anomaly of tricuspid valve
  • Hole in heart wall separating two upper heart chambers
  • Atrial septal defect murmur
  • Congenital atrial septal defect (disorder)
  • Atrioseptal defect
  • Malattachment of atrial septum with posterior aspect of septum primum to left
  • atrial septal defect (ASD)
  • Malattachment of atrial septum with superior aspect of septum primum to left and posterior
  • Endocardial cushion defect
  • Atrial Septal Defects
  • Atria septal defect (ASD)
  • asd
  • Interauricular septal defect (disorder)
  • Lymphoedema, atrial septal defect, facial changes syndrome
  • Ebstein anomaly of tricuspid valve
  • Nonrestrictive interatrial communication
  • Ebstein anomaly with atrial septal defect
  • Malattachment of atrial septum
  • Heart septal defect atrial
  • Interauricular septal defect
  • ASD - Atrial septal defect
  • Interatrial septal defect
  • Ebstein's malformation of tricuspid valve
  • Pericarditis associated with atrial septal defect
  • Atrial septal defect NOS
  • Atrial septal defect with endocardial cushion defect, partial type
  • atrial septal heart defects
  • Lymphedema, atrial septal defect, facial changes syndrome
  • Lymphoedema of lower extremity
  • Pericarditis co-occurrent with atrial septal defect
  • Defect in the atrial septum
  • Septal Defect, Atrial
  • An opening in the wall separating the top two chambers of the heart
  • Ebstein's anomaly with atrial septal defect
  • Irons Bianchi syndrome
  • Congenital abnormality of tricuspid leaflet
  • Ebsteins anomaly
  • Heart Septal Defects, Atrial
  • atrial septal heart defect
  • Septal defect interatrial
  • Lymphoedema of leg
  • Congenital abnormality of atrial septum
  • Lymphedema of lower extremity
  • Congenital atrial septal defect
  • Ebstein's anomaly
  • Lymphedema of leg
  • Restrictive interatrial communication
  • Defect, Atrial Septal
  • Restrictive interatrial communication with obligatory shunt
  • Atrial septal defect (disorder)
  • Atrial septal defect, atrioventricular conduction defect syndrome
Frequently Asked Questions
What is the ICD-10 code for atrial septal defect, unspecified?

The ICD-10-CM code for atrial septal defect, unspecified is Q21.10. The full clinical description is "Atrial septal defect, unspecified". Q21.10 is a billable/specific code that can be used on insurance claims and medical billing.

What does ICD-10 code Q21.10 mean?

ICD-10-CM code Q21.10 represents “Atrial septal defect, unspecified”. It is classified under Chapter 17: Congenital Malformations, Deformations and Chromosomal Abnormalities and is a billable/specific code that can be used on a claim.

Is Q21.10 a billable code?

Yes, Q21.10 is a billable/specific ICD-10-CM code and can be used to indicate a diagnosis on a medical claim.

What chapter is Q21.10 in?

Q21.10 is in Chapter 17: Congenital Malformations, Deformations and Chromosomal Abnormalities (codes Q00-Q99).

What codes cannot be used with Q21.10?

Q21.10 has Excludes1 notes indicating codes that cannot be used together with it, including: acquired cardiac septal defect (I51.0).

What SNOMED CT codes does Q21.10 map to?

Q21.10 maps to 19 SNOMED CT concepts: 70142008, 301130004, 60732002, 725145002, 447874007, and 14 more. SNOMED CT is a clinical terminology used in electronic health records.

What are the UMLS CUIs for Q21.10?

Q21.10 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 Q21.10 relate to ICF functioning codes?

ICF (International Classification of Functioning, Disability and Health) codes describe how conditions like atrial septal defect, unspecified 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 Q21.10?

There is no direct ICD-11 mapping available for Q21.10 in the WHO crosswalk tables. This may mean the concept is classified differently in ICD-11. Use the ICD-10 to ICD-11 converter to search for related codes.

Automate ICD-10 Coding With AI

Send clinical text to the AutoICD API and get back structured ICD-10 codes with confidence scores. Integrates into any EHR or billing system in minutes.

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.