{"code":"Q03.0","type":"code","title":"Malformations of aqueduct of Sylvius","codeAlso":[],"includes":["hydrocephalus in newborn"],"modern_v":"official26","codeFirst":[],"excludes1":["Arnold-Chiari syndrome, type II (Q07.0-)","acquired hydrocephalus (G91.-)","hydrocephalus due to congenital toxoplasmosis (P37.1)","hydrocephalus with spina bifida (Q05.0-Q05.4)"],"excludes2":[],"isBillable":true,"fyEffectivity":{"fy2026":true,"fy2027":true},"sibling_codes":["Q03","Q03.1","Q03.8","Q03.9"],"inclusionTerms":["Anomaly of aqueduct of Sylvius","Obstruction of aqueduct of Sylvius, congenital","Stenosis of aqueduct of Sylvius"],"sibling_titles":{"code":"Q03.9","title":"Congenital hydrocephalus, unspecified","isBillable":true},"useAdditionalCode":[],"clinicalDefinition":"Malformations of aqueduct of Sylvius is a billable ICD-10-CM diagnosis code (Q03.0). Includes: hydrocephalus in newborn. Inclusion terms: Anomaly of aqueduct of Sylvius; Obstruction of aqueduct of Sylvius, congenital; Stenosis of aqueduct of Sylvius. Excludes1 (not coded here): Arnold-Chiari syndrome, type II (Q07.0-); acquired hydrocephalus (G91.-); hydrocephalus due to congenital toxoplasmosis (P37.1); hydrocephalus with spina bifida (Q05.0-Q05.4).","officialDefinition":"Malformations of aqueduct of Sylvius is a billable ICD-10-CM diagnosis code (Q03.0). Includes: hydrocephalus in newborn. Inclusion terms: Anomaly of aqueduct of Sylvius; Obstruction of aqueduct of Sylvius, congenital; Stenosis of aqueduct of Sylvius. Excludes1 (not coded here): Arnold-Chiari syndrome, type II (Q07.0-); acquired hydrocephalus (G91.-); hydrocephalus due to congenital toxoplasmosis (P37.1); hydrocephalus with spina bifida (Q05.0-Q05.4).","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":""}