| Source | Code | Name | Case count | Share of cases (%) |
|---|---|---|---|---|
| INPAT | INPAT_ICD9(7423A) | Congenital hydrocephalus | 34 | |
| INPAT | INPAT_ICD8(74200) | Congenital hydrocephalus, Communicans | 33 | |
| OUTPAT | OUTPAT_ICD10(Q039) | Congenital hydrocephalus, unspecified | 31 | |
| INPAT | INPAT_ICD8(74209) | Congenital hydrocephalus, Unspecified | 28 | |
| OUTPAT | OUTPAT_ICD10(Q030) | Malformations of aqueduct of Sylvius | 26 | |
| INPAT | INPAT_ICD10(Q039) | Congenital hydrocephalus, unspecified | 25 | |
| INPAT | INPAT_ICD10(Q030) | Malformations of aqueduct of Sylvius | 13 | |
| INPAT | INPAT_ICD8(74201) | Congenital hydrocephalus, Non communicans | 12 | |
| INPAT | INPAT_ICD8(74210) | Name not found | 10 | |
| OUTPAT | OUTPAT_ICD10(Q031) | Atresia of foramina of Magendie and Luschka | 9 | |
| INPAT | INPAT_ICD10(Q031) | Atresia of foramina of Magendie and Luschka | 7 | |
| OUTPAT | OUTPAT_ICD10(Q0388) | Other congenital hydrocephalus | 5 |