Q20
Congenital malformations of cardiac chambers and connections
Not billable — category only FY2026 2025-10-01 → 2026-09-30
Exclusions 2 never code together
Instructional notes
No further instructional notes apply.
Index entries leading here filed at null
No alphabetic index entry points at this code.
Subordinate codes 9
Q20.0 Common arterial trunk Q20.1 Double outlet right ventricle Q20.2 Double outlet left ventricle Q20.3 Discordant ventriculoarterial connection Q20.4 Double inlet ventricle Q20.5 Discordant atrioventricular connection Q20.6 Isomerism of atrial appendages Q20.8 Oth congenital malform of cardiac chambers and connections Q20.9 Congenital malform of cardiac chambers and connections, unsp
Medications 1
MED-RT files conditions by MeSH, which carves the world differently from ICD-10. These are name matches on this code's description, offered as candidates — not as an assertion that they are this code.
Additional references
AHA Coding Clinic® Licence required
Official coding advice for this code. Published by the American Hospital Association. Not included in this installation.