{"code":"Q23.0","type":"code","title":"Congenital stenosis of aortic valve","codeAlso":[],"includes":[],"modern_v":"official26","codeFirst":[],"excludes1":["congenital stenosis of aortic valve in hypoplastic left heart syndrome (Q23.4)","congenital subaortic stenosis (Q24.4)","supravalvular aortic stenosis (congenital) (Q25.3)"],"excludes2":[],"isBillable":true,"fyEffectivity":{"fy2026":true,"fy2027":true},"sibling_codes":["Q23","Q23.1","Q23.2","Q23.3","Q23.4","Q23.8","Q23.9"],"inclusionTerms":["Congenital aortic atresia","Congenital aortic stenosis NOS"],"sibling_titles":{"code":"Q23.9","title":"Congenital malformation of aortic and mitral valves, unspecified","isBillable":true},"useAdditionalCode":[],"clinicalDefinition":"Congenital stenosis of aortic valve is a billable ICD-10-CM diagnosis code (Q23.0). Inclusion terms: Congenital aortic atresia; Congenital aortic stenosis NOS. Excludes1 (not coded here): congenital stenosis of aortic valve in hypoplastic left heart syndrome (Q23.4); congenital subaortic stenosis (Q24.4); supravalvular aortic stenosis (congenital) (Q25.3).","officialDefinition":"Congenital stenosis of aortic valve is a billable ICD-10-CM diagnosis code (Q23.0). Inclusion terms: Congenital aortic atresia; Congenital aortic stenosis NOS. Excludes1 (not coded here): congenital stenosis of aortic valve in hypoplastic left heart syndrome (Q23.4); congenital subaortic stenosis (Q24.4); supravalvular aortic stenosis (congenital) (Q25.3).","seventhCharacterInstructions":[],"workflowProtocols":[],"guidelines":{"whenToUse":[],"whenNotToUse":[],"commonBillingMistakes":[],"codeComparisons":[],"documentationChecklist":[]},"domainLandscape":{"summary":"Primary diagnostic domain and clinical landscape evaluation.","keyCategories":[],"diagnosticContinuum":"Progression continuum from acute presentation to resolution."},"children":[],"hierarchy":[],"relatedCodes":[],"relevantCPTCodes":[],"documentationTips":[],"caseStudies":[],"description":"","overview":""}