Q21.4

Aortopulmonary septal defect

Billable / specificPOA exempt

Q21.4 is a billable, specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes in FY2027.

Inclusion terms

Applicable to

  • Aortic septal defect
  • Aortopulmonary window

Includes (from Q21)

  • Note: Codes from this chapter are not for use on maternal records

Excludes1

Not coded here — never report together with this code.

  • acquired cardiac septal defect (I51.0) (from Q21)

Excludes2

Not included here — may be reported together when both conditions exist.

  • inborn errors of metabolism (E70-E88) (from Q21)

Also known as

  • Aortic septal defect
  • Aortopulmonary window
  • Absence, septum, between aorta and pulmonary artery
  • Agenesis, septum, between aorta and pulmonary artery
  • Communication, between, base of aorta and pulmonary artery
  • Defect, defective, aorticopulmonary septum
  • Fenestration, fenestrated, aortico-pulmonary
  • Imperfect, closure, septum, aorticopulmonary
  • Imperfect, closure, septum, between aorta and pulmonary artery
  • Window, aorticopulmonary

Parent code

  • Q21Congenital malformations of cardiac septaHeader

Related codes

  • Q21.0Ventricular septal defectBillable
  • Q21.1Atrial septal defectHeader
  • Q21.2Atrioventricular septal defectHeader
  • Q21.3Tetralogy of FallotBillable
  • Q21.8Other congenital malformations of cardiac septaBillable
  • Q21.9Congenital malformation of cardiac septum, unspecifiedBillable

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