1A Poisoning, comatose
1B Poisoning, conscious
1C Drug reaction
1D Alcohol/drug abuse and alcohol/drug induced mental disorders
2A Injury, multiple sites
2B Injury, single site
2BA Injury, single site *minor (subset of MDB 2B)
3A Circulatory system illness
3B Respiratory system illness
3C Digestive system illness
3D Urological illness
3E Neurological illness
3F Illness of the eyes
3G Illness of the ENT
3H Musculoskeletal/connective tissue illness
3I Illness of the skin, subcutaneous tissue, breast
3J Blood/immune system illness
3K Obstetric illness
3L Gynaecological illness
3M Male reproductive system illness
3N System infection/parasites
3O Illness of other or unknown systems
3P Newborn/Neonate
3Q Hepatobiliary system illness
4 Psychiatric illness
5 Social problem
6 Other presentation