| Source | Code | Name | Case count | Share of cases (%) |
|---|---|---|---|---|
| OUTPAT | OUTPAT_ICD10(G440) | Cluster headache syndrome | 855 | |
| PRIM_OUT | PRIM_OUT_NOT_USED_ICD10(G440) | Cluster headache syndrome. Not used in endpoint definition. POSSIBLY INACCURATE IN COMPLEX ENDPOINTS! | 465 | |
| INPAT | INPAT_ICD10(G440) | Cluster headache syndrome | 223 | |
| INPAT | INPAT_ICD9(3468X) | Other forms of migraine | 78 | |
| INPAT | INPAT_ICD8(34601) | Migraine, Morbus Harris-Horton | 23 |