Table 1.
Incident Medical Condition Codes Using International Classification of Diseases, Ninth Edition Nomenclature
| Class | ICD-9 code | Name | Count |
|---|---|---|---|
| Endocrine—Disorders of calcium and phosphorus metabolism | |||
| 252.1 | Hypoparathyroidism | 101 | |
| 275.41 | Hypocalcemia | 135 | |
| 275.42 | Hypercalcemia | 21 | |
| 275.3 | Disorders of phosphorus metabolism | 39 | |
| Endocrine—Diabetes | |||
| 250 | Diabetes mellitus | 245 | |
| Respiratory—Asthma | |||
| 493 | Asthma | 272 | |
| Respiratory—Other infectious/inflammatory respiratory diseases | |||
| 460–466 | Acute upper respiratory infections | 61 | |
| 480–488 | Pneumonia and influenza | 117 | |
| 490–492 | Bronchitis and emphysema | 33 | |
| 507 | Pneumonitis due to solids and liquids | 35 | |
| 515 | Postinflammatory pulmonary fibrosis | 8 | |
| Hematologic—Cytopenias | |||
| 288.0, 288.5 | Hematologic cytopenia (neutropenia + decreased white blood cells) | 37 | |
| 280–285 | Anemia | 686 | |
| 287.3–287.5 | Thrombocytopenia | 85 | |
| Hematologic—Leukocytosis | |||
| 288.3 | Eosinophilia | 3 | |
| 288.6 | Elevated white blood cell count | 81 | |
| 288.8 | Other specified disease of white blood cells | 9 | |
| Cardiovascular—Hypertension | |||
| 401–405 | Hypertension | 562 | |
| Cardiovascular—Diseases of the heart | |||
| 393–398 | Chronic rheumatic heart disease | 13 | |
| 410–414 | Ischemic heart disease | 71 | |
| 420–429 | Other forms of heart disease | 237 | |
ICD-9, International Classification of Diseases, Ninth Edition.