Q20
Congenital malformations of cardiac chambers and connections
Header / non-billable
Choose the additional character
Q20 needs more characters to be billable. Pick the specific code below.
- Q20.0Common arterial trunkBillable
- Q20.1Double outlet right ventricleBillable
- Q20.2Double outlet left ventricleBillable
- Q20.3Discordant ventriculoarterial connectionBillable
- Q20.4Double inlet ventricleBillable
- Q20.5Discordant atrioventricular connectionBillable
- Q20.6Isomerism of atrial appendagesBillable
- Q20.8Other congenital malformations of cardiac chambers and connectionsBillable
- Q20.9Congenital malformation of cardiac chambers and connections, unspecifiedBillable
This code does not map to a risk-adjusting HCC in the loaded models.
Coding notes
Excludes 1 never coded together · Excludes 2 may co-exist
This code · Q20
Inherited from chapter 17Congenital malformations, deformations and chromosomal abnormalities
Excludes 2
inborn errors of metabolism (E70-E88)
Note
Codes from this chapter are not for use on maternal records
Official Guidelines for Q20
FY 2026 ›Sections that reference Q20
Sections whose FY 2026 text names Q20, its Q20 category, or a range containing it — the chapter guidance above is the authoritative source.