Table 2.
Fifteen Most Frequent Primary Diagnoses in Included and Excluded Patients
| 3-digit ICD-9 code | Included | 3-digit ICD-9 code | Excluded | ||
|---|---|---|---|---|---|
| Description | Frequency n (%) | Description | Frequency n (%) | ||
| 493 | Asthma | 70 (6.0) | 493 | Asthma | 169 (35) |
| 745 | Congenital bulbus Cordis/Cardiac septal anomaly | 63 (5.4) | 250 | Diabetes mellitus | 82 (17) |
| 486 | Pneumonia | 48 (4.1) | 756 | Congenital musculoskeletal anomaly NOS | 15 (3.1) |
| 345 | Epilepsy | 44 (3.8) | 486 | Pneumonia | 13 (2.7) |
| 518 | Lung disease NOS | 41 (3.5) | 466 | Bronchitis/Bronchiolitis | 12 (2.5) |
| 466 | Bronchitis/Bronchiolitis | 38 (3.2) | 800 | Skull fracture (vault) | 12 (2.5) |
| 737 | Spine curvature | 38 (3.2) | 464 | Acute laryngitis/Tracheitis | 11 (2.3) |
| 746 | Congenital heart disease NOS | 37 (3.2) | 852 | Subarachnoid, subdural, extradural hemorrhage | 11 (2.3) |
| 747 | Congenital circulatory anomaly | 29 (2.5) | 801 | Skull fracture (vault) | 10 (2.1) |
| 996 | Procedure complication | 27 (2.3) | 741 | Spina bifida | 7 (1.5) |
| 038 | Septicemia | 24 (2.0) | 996 | Procedure complication | 7 (1.5) |
| 801 | Skull fracture (base) | 23 (2.0) | 345 | Epilepsy | 6 (1.3) |
| 800 | Skull fracture (vault) | 20 (1.7) | 474 | Chronic tonsil/Adenoid disease | 5 (1.0) |
| 754 | Congenital musculoskeletal deformity | 17 (1.4) | 348 | Brain condition NOS | 4 (0.8) |
| 779 | Perinatal condition NOS | 17 (1.4) | 851 | Cerebral laceration/Contusion | 4 (0.8) |
| Cumulative of all eligible cases | 536 (45.7) | Cumulative of all excluded cases | 368 (76.7) | ||