ICD-10-CM Diagnosis Code (2025)
Official Description for Q21.20
Atrioventricular septal defect, unspecified as to partial or complete
Coding Notes & Guidelines for Q21.20
- Atrioventricular canal, NOS
- Endocardial cushion defect NOS
- Ostium primum atrial septal defect (type I) NOS
Parent Code (Less Specific):
About ICD-10-CM Code Q21.20 (Atrioventricular septal defect)
ICD-10-CM code Q21.20 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 Q21.20 became effective on October 1, 2024.
This page provides detailed information about Q21.20 - Atrioventricular septal defect, unspecified as to partial or complete. 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 related to unspecified as to partial or complete.