Q21.20
BillableAtrioventricular septal defect, unspecified as to partial or complete
Q21.20 is the ICD-10-CM code for Atrioventricular septal defect, unspecified as to partial or complete. It is a billable, specific code valid for reimbursement.
Q00-Q99 Congenital malformations, deformations and chromosomal abnormalities
Includes
- •Atrioventricular canal, NOS
- •Endocardial cushion defect NOS
- •Ostium primum atrial septal defect (type I) NOS
Frequently asked questions
- What is ICD-10 code Q21.20?
- Q21.20 is the ICD-10-CM code for "Atrioventricular septal defect, unspecified as to partial or complete". It falls under Q00-Q99 Congenital malformations, deformations and chromosomal abnormalities.
- Is Q21.20 a billable code?
- Yes — Q21.20 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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