DIAGNOSIS OF DISEASES OF THE CHEST 4TH EDITION 4 VOLUMES

2.2.4 International nomenclature of diseases 12 2.2.5 The role of WHO 13 2.3 General principles of disease classification 13 2.4 The basic structure and principles of classification of the ICD 14 2.4.1 Volumes 15 2.4.2 Chapters 16 2.4.3 Blocks of categories 17 2.4.4 Three-character categories 17 2.4.5 Four-character subcategories 17 2.4.6 Supplementary subdivisions for use at the level of the