ICD-10-CM>Q00-QA1>Q00-Q07>Q03>Q03.0Q03.0Malformations of aqueduct of SylviusBillable/Specific Copy Code Copy DescriptionApplicable ToAnomaly of aqueduct of SylviusObstruction of aqueduct of Sylvius, congenitalStenosis of aqueduct of Sylvius