ICD-10-CM Diagnosis Code (2025)
Official Description for Q21.2
Atrioventricular septal defect
Coding Notes & Guidelines for Q21.2
Inclusion Terms
- Atrioventricular canal defect
- Endocardial cushion defect
- Ostium primum atrial septal defect (type I)
Inclusion Terms
- Atrioventricular canal, NOS
- Endocardial cushion defect NOS
- Ostium primum atrial septal defect (type I) NOS
Inclusion Terms
- Incomplete atrioventricular canal
- Incomplete atrioventricular septal defect
- Incomplete endocardial cushion defect
- Ostium primum atrial septal defect (type I) with separate atrioventricular valves
- Partial atrioventricular canal
- Partial endocardial cushion defect
Inclusion Terms
- Intermediate atrioventricular canal
- Intermediate atrioventricular septal defect
- Intermediate endocardial cushion defect
- Ostium primum atrial septal defect (type I) with separate atrioventricular valves and a small or restrictive inlet VSD
- Transitional atrioventricular canal
- Transitional endocardial cushion defect
Inclusion Terms
- 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
Parent Code (Less Specific):
About ICD-10-CM Code Q21.2 (Atrioventricular septal defect)
ICD-10-CM code Q21.2 is a billable or specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. The 2025 edition of ICD-10-CM Q21.2 became effective on October 1, 2024.
This page provides detailed information about Q21.2 - Atrioventricular septal defect. It includes common terminology, coding guidelines such as "Includes," "Excludes1," and "Excludes2" notes, and information on required 7th characters. Utilizing this information correctly is essential for accurate medical coding and claims submission for conditions like Atrioventricular septal defect.