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Q21.2 - Atrioventricular septal defect

The ICD 10 Code for Atrioventricular septal defect is listed as Q21.2.
Additional information concerning this code and description can be found below including ICD 9 crosswalks / GEMS, chapter information, and DRGs where available.

ICD 10 CM Field Value
Diagnosis Code: Q21.2
Description: Atrioventricular septal defect
  • Common atrioventricular canal
  • Endocardial cushion defect
  • Ostium primum atrial septal defect (type I)
Diagnostic Related Groups
(MS-DRG v30.0)
306 - Cardiac Congenital & Valvular Disorders W Mcc
307 - Cardiac Congenital & Valvular Disorders W/o Mcc
Chapter Congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
Block Congenital malformations of the circulatory system (Q20-Q28)
Parent Q21 - Congenital malformations of cardiac septa
ICD-9-CM Diagnosis Codes General Equivalence Mappings (GEMS):
ICD 9 Dx Code: 745.60 - Endocardial cushion defect, unspecified type (approximate)
ICD 9 Dx Code: 745.61 - Ostium primum defect (approximate)
ICD 9 Dx Code: 745.69 - Other endocardial cushion defects (approximate)
ICD-10-CM Siblings (same level / similar specificity) of Q21.2:
Q21.0 - Ventricular septal defect
Q21.1 - Atrial septal defect
Q21.3 - Tetralogy of Fallot
Q21.4 - Aortopulmonary septal defect
Q21.8 - Other congenital malformations of cardiac septa
Q21.9 - Congenital malformation of cardiac septum, unspecified