Q20.0

Common arterial trunk

Risk-adjusting (HCC)Billable code

HCC risk adjustment mapping

RxHCC V08

RXHCC191

Ventricular Septal Defect and Major Congenital Heart Disorders

Coding notes

Excludes 1 never coded together · Excludes 2 may co-exist

This code · Q20.0
Excludes 1

aortic septal defect (Q21.4)

Synonyms

Persistent truncus arteriosus

Inherited from Q20Congenital malformations of cardiac chambers and connections
Excludes 1

dextrocardia with situs inversus (Q89.3) mirror-image atrial arrangement with situs inversus (Q89.3)

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 Q20.0

FY 2026 ›
I.C.17Chapter-specific guidanceChapter 17: Congenital malformations, deformations, and chromosomal abnormalities (Q00-QA1)

Sections that reference Q20.0

Sections whose FY 2026 text names Q20.0, its Q20 category, or a range containing it — the chapter guidance above is the authoritative source.

Find Q20.0 in the alphabetic index

6 index paths lead to this code