01;Certain infectious and parasitic diseases
02;Neoplasms
03;Diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism
04;Endocrine, nutritional and metabolic diseases
05;Mental and behavioural disorders
06;Diseases of the nervous system
07;Diseases of the eye and adnexa
08;Diseases of the ear and mastoid process
09;Diseases of the circulatory system
10;Diseases of the respiratory system
11;Diseases of the digestive system
12;Diseases of the skin and subcutaneous tissue
13;Diseases of the musculoskeletal system and connective tissue
14;Diseases of the genitourinary system
15;Pregnancy, childbirth and the puerperium
16;Certain conditions originating in the perinatal period
17;Congenital malformations, deformations and chromosomal abnormalities
18;Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified
19;Injury, poisoning and certain other consequences of external causes
20;External causes of morbidity and mortality
21;Factors influencing health status and contact with health services
22;Codes for special purposes