From: Development of a validation algorithm for 'present on admission' flagging
Chapter | Code group | Â | Algorithm exclusions | N of codes in chapter | % chapter excluded |
---|---|---|---|---|---|
Chapter 1 | AB | Infectious and parasitic disease | 269 | 766 | 35.1 |
Chapter 2 | C/D | Neoplasms | 790 | 790 | 100.0 |
Chapter 3 | part D | Anaemia & other blood diseases | 54 | 164 | 32.9 |
Chapter 4 | E | Endocrine | 274 | 458 | 59.8 |
Chapter 5 | F | Mental/behavioural | 256 | 448 | 57.1 |
Chapter 6 | G | Nervous system | 114 | 387 | 29.5 |
Chapter 7/8 | H | Eye & ear | 75 | 372 | 20.2 |
Chapter 9 | I | Circulatory system | 142 | 396 | 35.9 |
Chapter 10 | J | Respiratory system | 76 | 233 | 32.6 |
Chapter 11 | K | Digestive system | 263 | 455 | 57.8 |
Chapter 12 | L | Skin | 115 | 348 | 33.0 |
Chapter 13 | M | Musculoskeletal system | 2031 | 3361 | 60.4 |
Chapter 14 | N | Genitourinary system | 207 | 435 | 47.6 |
Chapter 15 | O | Pregnancy & childbirth | 139 | 436 | 31.9 |
Chapter 16 | P | Perinatal | 115 | 366 | 31.4 |
Chapter 17 | Q | Congenital abnormalities | 887 | 887 | 100.0 |
Chapter 18 | R | Symptoms NEC | 6 | 334 | 1.8 |
Chapter 19 | S/T | Injuries | 44 | 1785 | 2.5 |
Chapter 20 | U-Y | External causes' of morbidity | 1508 | 2905 | 51.9 |
Chapter 21 | Z | Factors influencing health status | 638 | 684 | 93.3 |
Appendix A | Â | Morphology of neoplasms | 2408 | 2408 | 100.0 |
 |  | Total | 10411 | 18418 | 56.5 |