| Source | Code | Name | Case count | Share of cases (%) |
|---|---|---|---|---|
| OUTPAT | OUTPAT_ICD10(Q070) | Arnold-Chiari syndrome | 283 | |
| INPAT | INPAT_ICD10(Q070) | Arnold-Chiari syndrome | 138 | |
| PRIM_OUT | PRIM_OUT_NOT_USED_ICD10(Q070) | Arnold-Chiari syndrome. Not used in endpoint definition. POSSIBLY INACCURATE IN COMPLEX ENDPOINTS! | 98 | |
| OUTPAT | OUTPAT_ICD10(Q048) | Other specified congenital malformations of brain | 60 | |
| OUTPAT | OUTPAT_ICD10(Q046) | Congenital cysts in the brain | 41 | |
| OUTPAT | OUTPAT_ICD10(Q052) | Lumbar spina bifida with hydrocephalus | 31 | |
| INPAT | INPAT_ICD10(Q048) | Other specified congenital malformations of brain | 30 | |
| INPAT | INPAT_ICD9(7423A) | Congenital hydrocephalus | 30 | |
| INPAT | INPAT_ICD8(74200) | Congenital hydrocephalus, Communicans | 29 | |
| OUTPAT | OUTPAT_ICD10(Q078) | Other specified congenital malformations of the nervous system | 27 | |
| OUTPAT | OUTPAT_ICD10(Q039) | Congenital hydrocephalus, unspecified | 26 | |
| OUTPAT | OUTPAT_ICD10(Q057) | Lumbar spina bifida without hydrocephalus | 26 | |
| OUTPAT | OUTPAT_ICD10(Q030) | Malformations of aqueduct of Sylvius | 25 | |
| INPAT | INPAT_ICD10(Q052) | Lumbar spina bifida with hydrocephalus | 24 | |
| INPAT | INPAT_ICD8(74209) | Congenital hydrocephalus, Unspecified | 24 | |
| INPAT | INPAT_ICD10(Q039) | Congenital hydrocephalus, unspecified | 23 | |
| OUTPAT | OUTPAT_ICD10(Q059) | Spina bifida, unspecified | 22 | |
| OUTPAT | OUTPAT_ICD10(Q02) | Microcephaly | 21 | |
| INPAT | INPAT_ICD10(Q057) | Lumbar spina bifida without hydrocephalus | 17 | |
| OUTPAT | OUTPAT_ICD10(Q049) | Congenital malformation of brain, unspecified | 16 | |
| OUTPAT | OUTPAT_ICD10(Q068) | Other specified congenital malformations of spinal cord | 16 | |
| OUTPAT | OUTPAT_ICD10(Q043) | Other malformations in the form of reduced brain tissue | 15 | |
| PRIM_OUT | PRIM_OUT_NOT_USED_ICD10(Q052) | Lumbar spina bifida with hydrocephalus. Not used in endpoint definition. POSSIBLY INACCURATE IN COMPLEX ENDPOINTS! | 14 | |
| INPAT | INPAT_ICD10(Q030) | Malformations of aqueduct of Sylvius | 13 | |
| INPAT | INPAT_ICD10(Q046) | Congenital cysts in the brain | 12 | |
| OUTPAT | OUTPAT_ICD10(Q0400) | Agenesis of corpus callosum | 12 | |
| OUTPAT | OUTPAT_ICD10(Q050) | Cervical spina bifida with hydrocephalus | 12 | |
| OUTPAT | OUTPAT_ICD10(Q079) | Congenital malformation of nervous system, unspecified | 12 | |
| PRIM_OUT | PRIM_OUT_NOT_USED_ICD10(Q048) | Other specified congenital malformations of brain. Not used in endpoint definition. POSSIBLY INACCURATE IN COMPLEX ENDPOINTS! | 12 | |
| OUTPAT | OUTPAT_ICD10(Q018) | Encephalocele of other sites | 11 | |
| PRIM_OUT | PRIM_OUT_NOT_USED_ICD10(Q057) | Lumbar spina bifida without hydrocephalus. Not used in endpoint definition. POSSIBLY INACCURATE IN COMPLEX ENDPOINTS! | 11 | |
| INPAT | INPAT_ICD10(Q059) | Spina bifida, unspecified | 10 | |
| INPAT | INPAT_ICD8(74201) | Congenital hydrocephalus, Non communicans | 10 | |
| INPAT | INPAT_ICD8(74210) | Name not found | 10 | |
| OUTPAT | OUTPAT_ICD10(Q058) | Sacral spina bifida without hydrocephalus | 10 | |
| PRIM_OUT | PRIM_OUT_NOT_USED_ICD10(Q059) | Spina bifida, unspecified. Not used in endpoint definition. POSSIBLY INACCURATE IN COMPLEX ENDPOINTS! | 10 | |
| OUTPAT | OUTPAT_ICD10(Q069) | Congenital malformation of spinal cord, unspecified | 9 | |
| INPAT | INPAT_ICD10(Q043) | Other malformations in the form of reduced brain tissue | 8 | |
| OUTPAT | OUTPAT_ICD10(Q031) | Atresia of foramina of Magendie and Luschka | 8 | |
| OUTPAT | OUTPAT_ICD10(Q0408) | Congenital malformations of corpus callosum | 8 | |
| INPAT | INPAT_ICD10(Q02) | Microcephaly | 7 | |
| INPAT | INPAT_ICD10(Q053) | Sacral spina bifida with hydrocephalus | 7 | |
| INPAT | INPAT_ICD10(Q058) | Sacral spina bifida without hydrocephalus | 7 | |
| INPAT | INPAT_ICD10(Q068) | Other specified congenital malformations of spinal cord | 7 | |
| INPAT | INPAT_ICD10(Q078) | Other specified congenital malformations of the nervous system | 7 | |
| INPAT | INPAT_ICD10(Q011) | Nasofrontal encephalocele | 6 | |
| INPAT | INPAT_ICD10(Q031) | Atresia of foramina of Magendie and Luschka | 6 | |
| INPAT | INPAT_ICD10(Q0400) | Agenesis of corpus callosum | 6 | |
| INPAT | INPAT_ICD10(Q049) | Congenital malformation of brain, unspecified | 6 | |
| INPAT | INPAT_ICD10(Q069) | Congenital malformation of spinal cord, unspecified | 6 | |
| OUTPAT | OUTPAT_ICD10(Q000) | Anencephaly | 6 | |
| OUTPAT | OUTPAT_ICD10(Q011) | Nasofrontal encephalocele | 6 | |
| OUTPAT | OUTPAT_ICD10(Q044) | Septo-optic dysplasia | 6 | |
| OUTPAT | OUTPAT_ICD10(Q053) | Sacral spina bifida with hydrocephalus | 6 | |
| OUTPAT | OUTPAT_ICD10(Q063) | Other congenital cauda equina malformations | 6 | |
| PRIM_OUT | PRIM_OUT_NOT_USED_ICD10(Q043) | Other malformations in the form of reduced brain tissue. Not used in endpoint definition. POSSIBLY INACCURATE IN COMPLEX ENDPOINTS! | 6 | |
| INPAT | INPAT_ICD10(Q018) | Encephalocele of other sites | 5 | |
| OUTPAT | OUTPAT_ICD10(Q0388) | Other congenital hydrocephalus | 5 | |
| OUTPAT | OUTPAT_ICD10(Q055) | Cervical spina bifida without hydrocephalus | 5 |