| Source | Code | Name | Case count | Share of cases (%) |
|---|---|---|---|---|
| OUTPAT | OUTPAT_ICD10(D200) | Retroperitoneum | 84 | |
| INPAT | INPAT_ICD10(D200) | Retroperitoneum | 49 | |
| OUTPAT | OUTPAT_ICD10(D201) | Peritoneum | 37 | |
| INPAT | INPAT_ICD10(D201) | Peritoneum | 26 | |
| INPAT | INPAT_ICD8(21170) | Benign neoplasm of other parts of digestive system, Peritoneum and retroperitoneal tissue | 11 | |
| PRIM_OUT | PRIM_OUT_NOT_USED_ICD10(D200) | Retroperitoneum. Not used in endpoint definition. POSSIBLY INACCURATE IN COMPLEX ENDPOINTS! | 8 | |
| INPAT | INPAT_ICD9(2118X) | Benign neoplasm of other parts of digestive system, Retroperitoneum and peritoneum | 7 | |
| OUTPAT | OUTPAT_ICD10(D20) | Benign neoplasm of soft tissue of retroperitoneum and peritoneum | 7 |