ICD-10-CM Q21.15: Inferior sinus venosus atrial septal defect

ICD-10-CM Diagnosis Code (2025)

Official Description for Q21.15

Inferior sinus venosus atrial septal defect

Coding Notes & Guidelines for Q21.15

Inclusion Terms

Inferior vena cava type atrial septal defect

Parent Code (Less Specific):

About ICD-10-CM Code Q21.15 (Inferior sinus venosus atrial septal defect)

ICD-10-CM code Q21.15 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 Q21.15 became effective on October 1, 2024.

This page provides detailed information about Q21.15 - Inferior sinus venosus atrial 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 Inferior sinus venosus atrial septal defect.