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Diagnosis Code

Q21.4 AORTOPULMONARY SEPTAL DEFECT


Code Information

Diagnosis Code: Q21.4

Short Description: Aortopulmonary septal defect

Long Description: Aortopulmonary septal defect

The code Q21.4 is VALID for claim submission

Code Classification:

  • Congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
    • Congenital malformations of the circulatory system (Q20-Q28)
      • Congenital malformations of cardiac septa (Q21)
        • Q21.4 Aortopulmonary septal defect

Code Version: 2022 ICD-10-CM


Synonyms

  • Aortopulmonary window
  • Aortopulmonary window
  • Aortopulmonary window with tubular connection
  • Confluent aortopulmonary window with minimal superior and inferior rim
  • Distal aortopulmonary window with minimal superior rim
  • Endarteritis
  • Infective aortitis
  • Infective endarteritis at site of aortopulmonary window
  • Intermediate aortopulmonary window with adequate superior and inferior rim
  • Proximal aortopulmonary window with minimal inferior rim

Diagnostic Related Group(s)

The code Q21.4 is grouped in the following Diagnostic Related Group(s) (MS-DRG v39.0)
  • Cardiac Congenital And Valvular Disorders With Mcc (306)
  • Cardiac Congenital And Valvular Disorders Without Mcc (307)

References to Index of Diseases and Injuries

The code Q21.4 has the following ICD-10-CM references to the Index of Diseases and Injuries
  • Inclusion Terms:
    • Aortic septal defect
    • Aortopulmonary window

Crosswalk Information

ICD-10 Code ICD-9 Code ICD-9 Description
Q21.4 Right Arrow 745.8 Septal closure anom NEC

This ICD-10 to ICD-9 data is based on the 2018 General Equivalency Mapping (GEM) files published by the Centers for Medicare & Medicaid Services (CMS) for informational purposes only. The data is not an ICD-10 conversion tool and doesn’t guarantee clinical accuracy.

Similar Codes

ICD-10 Code ICD-10 Description
Q21 Congenital malformations of cardiac septa
Q21.0 Ventricular septal defect
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
Q21.2 Atrioventricular septal defect
Q21.20 Atrioventricular septal defect, unspecified as to partial or complete
Q21.21 Partial atrioventricular septal defect
Q21.22 Transitional atrioventricular septal defect
Q21.23 Complete atrioventricular septal defect
Q21.3 Tetralogy of Fallot
Q21.8 Other congenital malformations of cardiac septa
Q21.9 Congenital malformation of cardiac septum, unspecified

This page was last updated on: 10/1/2023

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