| | Chapter | Blocks | Title |
| Select | I | A00-B99 | Certain infectious and parasitic diseases |
| Select | II | C00-D48 | Neoplasms |
| Select | III | D50-D89 | Diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism |
| Select | IV | E00-E90 | Endocrine, nutritional and metabolic diseases |
| Select | V | F00-F99 | Mental and behavioural disorders |
| Select | VI | G00-G99 | Diseases of the nervous system |
| Select | VII | H00-H59 | Diseases of the eye and adnexa |
| Select | VIII | H60-H95 | Diseases of the ear and mastoid process |
| Select | IX | I00-I99 | Diseases of the circulatory system |
| Select | X | J00-J99 | Diseases of the respiratory system |
| Select | XI | K00-K93 | Diseases of the digestive system |
| Select | XII | L00-L99 | Diseases of the skin and subcutaneous tissue |
| Select | XIII | M00-M99 | Diseases of the musculoskeletal system and connective tissue |
| Select | XIV | N00-N99 | Diseases of the genitourinary system |
| Select | XV | O00-O99 | Pregnancy, childbirth and the puerperium |
| Select | XVI | P00-P96 | Certain conditions originating in the perinatal period |
| Select | XVII | Q00-Q99 | Congenital malformations, deformations and chromosomal abnormalities |
| Select | XVIII | R00-R99 | Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified |
| Select | XIX | S00-T98 | Injury, poisoning and certain other consequences of external causes |
| Select | XX | V01-Y98 | External causes of morbidity and mortality |
| Select | XXI | Z00-Z99 | Factors influencing health status and contact with health services |
| Select | XXII | U00-U99 | Codes for special purposes |