Table 3.
Most Frequent Diagnostic and Procedural Codes During the Index Hospitalization for the False-Positive Cases.
| Diagnostic code | Description | Procedural code | Description |
|---|---|---|---|
| CIHI Algorithm: 1 diagnostic code (Z524, n = 215) | |||
| Z524 | Kidney donor | 1PC58DAXXJ | Kidney procurement (living donor) |
| Z526 | Liver donor | 1GZ31CAND | Ventilation |
| Z528 | Donor of other organs and tissues | 1PC58PFXXJ | Kidney procurement (living donor) |
| Z527 | Heart donor | 1PC58LBXXJ | Kidney procurement (living donor) |
| G9381 | Other specified disorders of brain | 3AN20WA | CT brain |
| CIHI Algorithm: 1 procedural code (1PC58, n = 136) | |||
| Z524 | Kidney donor | 1PC58DAXXJ | Kidney procurement (living donor) |
| Y836 | Removal of organ | 1PC58LBXXJ | Kidney procurement (living donor) |
| N180 | Chronic kidney disease | 1PC58PFXXJ | Kidney procurement (living donor) |
| I12 | Hypertensive renal disease | 1PC58LBXXK | Kidney procurement (deceased donor) |
| CIHI Algorithm: 1 procedural code (1PC58 or 1PC89 or 1PC91, n = 3094) | |||
| C64 | Malignant neoplasm of kidney | 1PC91DA | Kidney excision, radical |
| I100 | Primary hypertension | 1PC91LB | Kidney excision, radical |
| Y836 | Removal of organ | 1PC89DA | Kidney excision, total |
| N180 | Chronic kidney disease | 1PZ21HQBR | Dialysis |
| I12 | Hypertensive renal disease | 1PC89LB | Kidney excision, total |
| CIHI Algorithm: 1 diagnostic code AND 1 procedural code (all algorithms, n = 123-129) | |||
| Z524 | Kidney donor | 1PC58DAXXJ | Kidney procurement (living donor) |
| Y836 | Removal of organ | 1PC58PFXXJ | Kidney procurement (living donor) |
| K219 | Gastroesophageal reflux disease | 1PC58LBXXJ | Kidney procurement (living donor) |
| T812 | Accidental laceration | 3OT20WA | CT abdomen |
Note. CIHI false-positive cases are those identified by the algorithm but not in the TGLN registry (referent standard). Frequencies are not reported because in accordance with ICES privacy policies, cell sizes ≤5 cannot be reported. CIHI = Canadian Institute for Health Information; CT = computed tomography; ICES = Institute for Clinical Evaluative Sciences; TGLN = Trillium Gift of Life Network.