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Q20 Congenital malformations of cardiac chambers and connections

Part of Chapter 17: Congenital malformations, deformations, chromosomal abnormalities, and genetic disorders , block Congenital malformations of the circulatory system (Q20-Q28) .

Official Notes

Excludes1

dextrocardia with situs inversus ( Q89.3 )

Excludes1

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

Child Codes

FY 2027 effective October 1, 2026 · CDC NCHS and CMS