ICD-10-CM code "Q20": Congenital malformations of cardiac chambers and connections (2024)

Excludes

1. Congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)

   Type 2inborn errors of metabolism (E70-E88)

2. Congenital malformations of the circulatory system (Q20-Q28)
3. Congenital malformations of cardiac chambers and connections (Q20)

   Type 1dextrocardia with situs inversus (Q89.3)

   Type 1mirror-image atrial arrangement with situs inversus (Q89.3)

Includes

1. Congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
2. Congenital malformations of the circulatory system (Q20-Q28)
3. Congenital malformations of cardiac chambers and connections (Q20)

Subcategories

• Common arterial trunk (Q20.0)
• Double outlet right ventricle (Q20.1)
• Double outlet left ventricle (Q20.2)
• Discordant ventriculoarterial connection (Q20.3)
• Double inlet ventricle (Q20.4)
• Discordant atrioventricular connection (Q20.5)
• Isomerism of atrial appendages (Q20.6)
• Other congenital malformations of cardiac chambers and connections (Q20.8)
• Congenital malformation of cardiac chambers and connections, unspecified (Q20.9)