- Q21.20 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
- The 2024 edition of ICD-10-CM Q21.20 became effective on October 1, 2022.
- This is the American ICD-10-CM version of Q21.20 – other international versions of ICD-10 Q21.20 may differ.
ICD-10-CM Q21.20 is grouped within Diagnostic Related Group(s):
- 306 Cardiac congenital and valvular disorders with mcc
- 307 Cardiac congenital and valvular disorders without mcc
Applicable To
- Atrioventricular canal, NOS
- Endocardial cushion defect NOS
- Ostium primum atrial septal defect (type I) NOS
Code History
- 2024 (effective 10/1/2022): New code
- 2024 (effective 10/1/2022): No change
Diagnosis Index entries containing back-references to Q21.20:
- atrioventricular > Canal
- ostium primum type (type I) > atrial septal Q21.10
- atrioventricular > Defect, defective Q89.9
- canal > atrioventricular Q21.20
- unspecified as to partial or complete > septal Q21.23
- septum > atrioventricular Q21.20
- cushion, endocardial > Defect, defective Q89.9
- ostium > Defect, defective Q89.9
- primum > ostium Q21.20
- cushion defect > Endocardium, endocardial
- atrioventricular ostium > closure (congenital) Q45.8
- primum (arteriosum) (defect) (persistent) > Ostium
- atrioventricular canal > Persistence, persistent (congenital)
- primum > ostium Q21.23
- atrium > Single