Table 1

Diagnoses and follow up periods of studies of hospital admissions that have been performed at the National Institute of Occupational Health, Denmark

Diagnoses ICD-8 code Last period Earlier periods
Infectious and parasitic diseases001–1391991–93
Neoplasms140–2391981–93
 Malignant neoplasm of colon1531981–93
 Malignant neoplasm of respiratory organs160–1631981–90
Diseases of the nervous system and sense organs320–3891991–93
Diseases of the circulatory system390–4581991–93
 Ischaemic heart disease (IHD)410–4141994–971981–85, 1981–90, 1986–90, 1991–93
  Acute myocardial infarction4101994–971981–85, 1981–90, 1986–90, 1991–93
  Chronic IHD4121981–90
  Angina pectoris4131981–90
 Cerebrovascular disease430–4381994–971981–90, 1981–93, 1991–93
 Pulmonary embolism4501981–93
 Varicose veins of lower limbs4541994–971991–93
Diseases of the respiratory system460–5191991–93
 Chronic obstructive pulmonary disease490–4931994–971981–85, 1981–90, 1986–90, 1991–93
  Chronic bronchitis4911994–971981–85, 1981–90, 1986–90, 1991–93
  Emphysema4921981–90
  Asthma4931994–971981–90
Diseases of the digestive system520–5791991–93
 Peptic ulcer531–5341994–97
  Gastric ulcer5311994–971981–85, 1986–90, 1991–93
  Duodenal ulcer5321994–971981–85, 1986–90, 1991–93
 Acute gastritis5351994–971981–85, 1986–90, 1991–93
 Inguinal hernia5501991–93
Diseases of the musculoskeletal system710–7391991–93
 Arthrosis of the hip713.001994–971981–85, 1981–90, 1986–90, 1991–93
 Arthrosis of the knee713.011981–90
 Prolapsed cervical disc725.011994–971981–90
 Prolapsed lumbar disc725.111994–971981–85, 1981–90, 1986–90, 1991–93
Injury and poisoning800–9891991–93
 Injuries in lower limbs820–7, 836–8, 844–5, 877, 890–8, 903, 908, 916–7, 927–8, 945, 955–71991–93
 Injuries in trunk and internal organs807–8, 835, 843, 859–69, 875, 878–9, 901, 911, 922, 942, 946–7, 9591991–93
 Injuries in upper limbs810–6, 818, 831–4, 840–2, 880–8, 902, 905–7, 912–5, 923–6, 943–4, 952–41991–93
 Back injury805, 846–7, 874, 876, 9581991–93
 Head injury800–3, 830, 850–4, 870–3, 900, 910, 920–1, 930, 940–1, 950–11991–93
 Ruptures in ligaments and muscles849, 9091991–93