| Source | Code | Name | Case count | Share of cases (%) |
|---|---|---|---|---|
| INPAT | INPAT_ICD9(7423A) | Congenital hydrocephalus | 23 | |
| INPAT | INPAT_ICD8(74200) | Congenital hydrocephalus, Communicans | 21 | |
| OUTPAT | OUTPAT_ICD10(Q030) | Malformations of aqueduct of Sylvius | 18 | |
| OUTPAT | OUTPAT_ICD10(Q039) | Congenital hydrocephalus, unspecified | 18 | |
| INPAT | INPAT_ICD8(74209) | Congenital hydrocephalus, Unspecified | 16 | |
| INPAT | INPAT_ICD10(Q039) | Congenital hydrocephalus, unspecified | 14 | |
| INPAT | INPAT_ICD10(Q030) | Malformations of aqueduct of Sylvius | 11 | |
| INPAT | INPAT_ICD8(74201) | Congenital hydrocephalus, Non communicans | 9 | |
| INPAT | INPAT_ICD8(74210) | Name not found | 8 | |
| INPAT | INPAT_ICD10(Q031) | Atresia of foramina of Magendie and Luschka | 5 | |
| OUTPAT | OUTPAT_ICD10(Q031) | Atresia of foramina of Magendie and Luschka | 5 |