Table 1.
Distribution of Study Subjects by Major Disease Category and ICD-9-CM Code Range
| Major Disease Category | ICD-9-CM Code Range | Number of Subjects (%) |
|---|---|---|
| Noninjury categories | ||
| Infectious and parasitic diseases | 001 to 139 | 7 (2.8) |
| Endocrine, metabolic diseases, and immunity disorders | 240 to 279 | 3 (1.2) |
| Diseases of the blood and blood forming organs | 280 to 289 | 2 (0.8) |
| Diseases of the nervous system and sense organs | 320 to 389 | 12 (4.8) |
| Diseases of the circulatory system | 390 to 459 | 6 (2.4) |
| Diseases of the respiratory system | 460 to 519 | 13 (5.2) |
| Diseases of the digestive system | 520 to 579 | 6 (2.4) |
| Diseases of the genitourinary system | 580 to 629 | 16 (6.4) |
| Complications of pregnancy, childbirth, and the puerperium | 630 to 677 | 2 (0.8) |
| Diseases of the skin and subcutaneous tissue | 680 to 709 | 16 (6.4) |
| Diseases of the musculoskeletal and connective tissue | 710 to 739 | 33 (13.2) |
| Symptoms, signs, and ill-defined conditions | 780 to 799 | 49 (19.6) |
| Injury categories | ||
| Fractures | 800 to 829 | 34 (13.6) |
| Sprains | 840 to 848 | 26 (10.4) |
| Open wounds | 870 to 897 | 13 (5.2) |
| Contusions | 920 to 924 | 7 (2.8) |
| Burns | 940 to 943 | 3 (1.2) |
| Poisoning and toxic effects | 960 to 989 | 2 (0.8) |
| Total | 250 |