ICD-10-CM Diagnosis Code (2025)
Official Description for Q21.9
Congenital malformation of cardiac septum, unspecified
Coding Notes & Guidelines for Q21.9
Septal (heart) defect NOS
Parent Code (Less Specific):
About ICD-10-CM Code Q21.9 (Congenital malformation of cardiac septum)
ICD-10-CM code Q21.9 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 Q21.9 became effective on October 1, 2024.
This page provides detailed information about Q21.9 - Congenital malformation of cardiac septum, unspecified. 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 Congenital malformation of cardiac septum related to unspecified.