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ICDMine.com › Browse ICD-10-CM Codes › Ch. 17: Congenital malformations, deformations, chromosomal abnormalities, and genetic disorders (Q00-QA1) › Congenital malformations of the circulatory system (Q20-Q28) › Q21

Q21Congenital malformations of cardiac septa

ICD-10-CM category (non-billable header) code — part of Congenital malformations of the circulatory system (Q20-Q28)

Code Details

Billable	No — use a more specific child code
Chapter	Chapter 17: Congenital malformations, deformations, chromosomal abnormalities, and genetic disorders (Q00-QA1)
Section	Congenital malformations of the circulatory system (Q20-Q28)

Coding Notes

Excludes1 (never code both together)

acquired cardiac septal defect (I51.0)

Subcategories (7)

Q21.0 Ventricular septal defect
Q21.1 Atrial septal defect
Q21.2 Atrioventricular septal defect
Q21.3 Tetralogy of Fallot
Q21.4 Aortopulmonary septal defect
Q21.8 Other congenital malformations of cardiac septa
Q21.9 Congenital malformation of cardiac septum, unspecified

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