Q23.0
Congenital stenosis of aortic valve
Coding guidance (WHO 2019)
Congenital aortic: atresia stenosis Excl.: congenital subaortic stenosis (Q24.4) that in hypoplastic left heart syndrome (Q23.4)
Sibling codes
Q23Congenital malformations of aortic and mitral valvesQ23.1Congenital insufficiency of aortic valveQ23.2Congenital mitral stenosisQ23.3Congenital mitral insufficiencyQ23.4Hypoplastic left heart syndromeQ23.8Other congenital malformations of aortic and mitral valvesQ23.9Congenital malformation of aortic and mitral valves, unspecified