Q21.4
BillableAortopulmonary septal defect
Aortopulmonary septal defect
Coding Notes
Inclusion Terms
Alternative clinical terms for this condition
- Aortic septal defect
- Aortopulmonary window
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(6)
ICD-11 Equivalents(1)
ICD-11 Equivalents
View full mappingCorresponding ICD-11 codes from the WHO crosswalk mapping
Also Known As / Clinical Terms(80)
SNOMED CT
- AP - Aortopulmonary window17024001
- APW - Aortopulmonary window17024001
- Aortic septal defect17024001
- Aorticopulmonary septal defect17024001
- Aorticopulmonary window17024001
- Aortopulmonary septal defect17024001
- Aortopulmonary window17024001
- Endarteritis33806008
- Infective aortitis312383007
- Distal aortopulmonary window with minimal superior rim447700007
- Intermediate aortopulmonary window with adequate superior and inferior rim447701006
- Confluent aortopulmonary window with minimal superior and inferior rim447702004
- Proximal aortopulmonary window with minimal inferior rim447773008
- Aortopulmonary window with tubular connection447901004
- Infectious endarteritis at site of aortopulmonary window459173004
- Infective endarteritis at site of aortopulmonary window459173004
UMLS
- AORTICOPULM SEPTAL DEFECTC0003516
- AORTICOPULM SEPTAL DEFECTSC0003516
- AORTOPULM SEPTAL DEFECTC0003516
- AORTOPULM SEPTAL DEFECTSC0003516
- AP - Aortopulmonary windowC0003516
- AP WindowC0003516
- APSDC0003516
- APWC0003516
- APW - Aortopulmonary windowC0003516
- Aortic septal defectC0003516
- Aorticopulmonary Septal DefectC0003516
- Aorticopulmonary Septal DefectsC0003516
- Aorticopulmonary septal defectC0003516
- Aorticopulmonary windowC0003516
- Aortopulmonary Septal DefectC0003516
- Aortopulmonary Septal DefectsC0003516
- Aortopulmonary WindowC0003516
- Aortopulmonary septal defectC0003516
- Aortopulmonary windowC0003516
- Aortopulmonary window (disorder)C0003516
- SEPTAL DEFECT AORTICOPULMC0003516
- SEPTAL DEFECT AORTOPULMC0003516
- SEPTAL DEFECTS AORTICOPULMC0003516
- SEPTAL DEFECTS AORTOPULMC0003516
- Septal Defect, AorticopulmonaryC0003516
- Septal Defect, AortopulmonaryC0003516
- Septal Defects, AorticopulmonaryC0003516
- Septal Defects, AortopulmonaryC0003516
- aortic septal defectC0003516
- aorticopulmonary windowC0003516
- aortopulmonary windowC0003516
Clinical Terms
- SEPTAL DEFECTS AORTICOPULM
- AORTOPULM SEPTAL DEFECT
- aortopulmonary window
- SEPTAL DEFECTS AORTOPULM
- Intermediate aortopulmonary window with adequate superior and inferior rim
- APSD
- aorticopulmonary window
- Confluent aortopulmonary window with minimal superior and inferior rim
- Infectious endarteritis at site of aortopulmonary window
- AORTOPULM SEPTAL DEFECTS
- Distal aortopulmonary window with minimal superior rim
- Aorticopulmonary septal defect
- Aortic septal defect
- Infective aortitis
- Aortopulmonary Septal Defects
- AORTICOPULM SEPTAL DEFECT
- Aorticopulmonary Septal Defects
- Infective endarteritis at site of aortopulmonary window
- AP - Aortopulmonary window
- Septal Defect, Aorticopulmonary
- SEPTAL DEFECT AORTOPULM
- APW - Aortopulmonary window
- AP Window
- SEPTAL DEFECT AORTICOPULM
- Septal Defects, Aorticopulmonary
- APW
- Septal Defect, Aortopulmonary
- Aortopulmonary window with tubular connection
- AORTICOPULM SEPTAL DEFECTS
- Proximal aortopulmonary window with minimal inferior rim
- Septal Defects, Aortopulmonary
- Aortopulmonary window (disorder)
- Endarteritis
Frequently Asked Questions
What is the ICD-10 code for aortopulmonary septal defect?
The ICD-10-CM code for aortopulmonary septal defect is Q21.4. The full clinical description is "Aortopulmonary septal defect". Q21.4 is a billable/specific code that can be used on insurance claims and medical billing.
What does ICD-10 code Q21.4 mean?
ICD-10-CM code Q21.4 represents “Aortopulmonary septal defect”. 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 Q21.4 a billable code?
Yes, Q21.4 is a billable/specific ICD-10-CM code and can be used to indicate a diagnosis on a medical claim.
What chapter is Q21.4 in?
Q21.4 is in Chapter 17: Congenital Malformations, Deformations and Chromosomal Abnormalities (codes Q00-Q99).
What codes cannot be used with Q21.4?
Q21.4 has Excludes1 notes indicating codes that cannot be used together with it, including: acquired cardiac septal defect (I51.0).
What SNOMED CT codes does Q21.4 map to?
Q21.4 maps to 9 SNOMED CT concepts: 17024001, 447901004, 447702004, 447700007, 33806008, and 4 more. SNOMED CT is a clinical terminology used in electronic health records.
What are the UMLS CUIs for Q21.4?
Q21.4 is linked to 1 UMLS Concept Unique Identifier: C0003516. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.
How does Q21.4 relate to ICF functioning codes?
ICF (International Classification of Functioning, Disability and Health) codes describe how conditions like aortopulmonary 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 Q21.4?
Q21.4 maps to the ICD-11 code: LA8B.0 (Congenital aortopulmonary window).
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.