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2. ICD-10 Codes
3. Chapter - Q00-Q99
4. Section - Q20-Q28
5. Category - Q21
6. Q21.23

Q21.23 - Complete atrioventricular septal defect

• Applicable to Complete atrioventricular septal defect
• The 2025 edition of ICD10-CM Q21.23 became effective on October 1, 2024.
• This is the American ICD10-CM version of Q21.23 - other international versions of ICD10 Q21.23 may differ.
• Q21.23 is a Billable / Specific ICD10-CM code that can be used to indicate a diagnosis for reimbursement purposes.

• Common atrioventricular canal
• Common atrioventricular septal defect
• Common endocardial cushion defect
• Ostium primum atrial septal defect (type I) with common atrioventricular valve and a moderate or larger inlet VSD

The following codes above Q21.23 contain annotation back-references that may be applicable to Q21.23:

• Chapter: Q00-Q99 - Congenital malformations, deformations and chromosomal abnormalities
• Section: Q20-Q28 - Congenital malformations of the circulatory system
• Category: Q21 - Congenital malformations of cardiac septa

Browse other similar CM codes:

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.