| Source | Code | Name | Case count | Share of cases (%) |
|---|---|---|---|---|
| INPAT | INPAT_ICD8(38210) | Chronic otitis media with mastoiditis | 432 | |
| OUTPAT | OUTPAT_ICD10(H701) | Chronic mastoiditis | 344 | |
| INPAT | INPAT_ICD10(H701) | Chronic mastoiditis | 128 | |
| INPAT | INPAT_ICD9(3831A) | Chronic mastoiditis | 11 | |
| PRIM_OUT | PRIM_OUT_NOT_USED_ICD10(H701) | Chronic mastoiditis. Not used in endpoint definition. POSSIBLY INACCURATE IN COMPLEX ENDPOINTS! | 10 | |
| INPAT | INPAT_ICD8(38310) | Mastoiditis without mention of otitis media, Chronic | 9 |