Table 2.
Cases by diagnosis frequency
| ICD-9a | Description | Primary model (n = 854) | Secondary model (n = 195) |
|---|---|---|---|
| 580.89 |
Acute interstitial nephritis |
3 (0.35%) |
0 (0.00%) |
| 583.81 |
Nephritis NOS in other disease |
17 (1.99%) |
1 (0.50%) |
| 583.89 |
Nephritis NECb |
4 (0.47%) |
1 (0.50%) |
| 583.9 |
Nephritis NOSc |
31 (3.63%) |
8 (4.00%) |
| 584.8 |
Acute renal failure NEC |
1 (0.12%) |
0 (0.00%) |
| 584.9 |
Acute renal failure NOS |
147 (17.21%) |
30 (15.00%) |
| 586 |
Renal failure NOS |
47 (5.50%) |
6 (3.00%) |
| 593.9 | Acute renal insufficiency | 605 (70.84%) | 149 (77.00%) |
aICD-9 International Classification of Diseases, Ninth Revision.
bNEC not elsewhere classifiable.
cNOS not otherwise specified.