The ICD-10 code range for Congenital malformations of the circulatory system Q20-Q28 is medical classification list by the World Health Organization (WHO).
ICD-10 Code range (Q20-Q28), Congenital malformations of the circulatory system contains ICD-10 codes for Congenital malformations of pulmonary and tricuspid valves, Pulmonary valve atresia, Congenital pulmonary valve stenosis, Congenital pulmonary valve insufficiency, Other congenital malformations of pulmonary valve, Congenital tricuspid stenosis, Ebstein's anomaly, Hypoplastic right heart syndrome, Other congenital malformations of tricuspid valve, Congenital malformation of tricuspid valve, unspecified