1. Certain infectious and parasitic diseases (A00-B99)

 2. Neoplasms (C00-D48)

 3. Diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism (D50-D89)

 4. Endocrine, nutritional and metabolic diseases (E00-E90)

 5. Mental and behavioural disorders (F00-F99)

 6. Diseases of the nervous system (G00-G99)

 7. Diseases of the eye and adnexa (H00-H59)

 8. Diseases of the ear and mastoid process (H60-H95)

 9. Diseases of the circulatory system (I00-I99)

 10. Diseases of the respiratory system (J00-J99)

   J00-J06  Acute upper respiratory infections

   J09-J18  Influenza and pneumonia

   J20-J22  Other acute lower respiratory infections

   J30-J39  Other diseases of upper respiratory tract

     J30  Vasomotor and allergic rhinitis

     J32  Chronic sinusitis

   J40-J47  Chronic lower respiratory diseases

   J60-J70  Lung diseases due to external agents

   J80-J84  Other respiratory diseases principally affecting the interstitium

   J85-J86  Suppurative and necrotic conditions of lower respiratory tract

   J90-J94  Other diseases of pleura

   J95-J99  Other diseases of the respiratory system

 11. Diseases of the digestive system (K00-K93)

 12. Diseases of the skin and subcutaneous tissue (L00-L99)

 13. Diseases of the musculoskeletal system and connective tissue (M00-M99)

 14. Diseases of the genitourinary system (N00-N99)

 15. Pregnancy, childbirth and the puerperium (O00-O99)

 16. Certain conditions originating in the perinatal period (P00-P96)

 17. Congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)

 18. Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99)

 19. Injury, poisoning and certain other consequences of external causes (S00-T98)

 20. External causes of morbidity and mortality (V01-Y98)

 21. Factors influencing health status and contact with health services (Z00-Z99)

 22. Codes for special purposes (U00-U85)