Table 2.
Sixteen disease chapters (classes) and numbers of diseases in each chapter.
| Disease Class | Diseases (n) |
Disease Classes | Diseases (n) |
|---|---|---|---|
| Certain infectious and parasitic dis- eases |
11,598 | Diseases of the circulatory system | 5544 |
| Neoplasms | 14,158 | Diseases of the respiratory system | 3156 |
| Diseases of the blood and blood forming organs and certain disorders involving the immune mechanism |
3264 | Diseases of the digestive system | 5960 |
| Endocrine, nutritional and metabolic diseases |
5438 | Diseases of the skin and subcutaneous tissue | 4390 |
| Mental and behavioural disorders | 6162 | Diseases of the musculoskeletal system and connective tissue | 11520 |
| Diseases of the nervous system | 5258 | Diseases of the genitourinary system | 5247 |
| Diseases of the eye and adnexa | 3735 | Congenital malformations, deformations and chromosomal abnormalities | 9064 |
| Diseases of the ear and mastoid process | 1815 | Certain conditions originating in the perinatal period |
3454 |