Q21.8
BillableOther congenital malformations of cardiac septa
Q21.8 is the ICD-10-CM code for Other congenital malformations of cardiac septa. It is a billable, specific code valid for reimbursement.
Q00-Q99 Congenital malformations, deformations and chromosomal abnormalities
Includes
- •Eisenmenger's defect
- •Pentalogy of Fallot
Frequently asked questions
- What is ICD-10 code Q21.8?
- Q21.8 is the ICD-10-CM code for "Other congenital malformations of cardiac septa". It falls under Q00-Q99 Congenital malformations, deformations and chromosomal abnormalities.
- Is Q21.8 a billable code?
- Yes — Q21.8 is a billable, specific ICD-10-CM code valid for reimbursement.
Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.
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