Presents the detailed alphabetical index in three sections: Section I lists all the terms classifiable to Chapters I-XIX and Chapter XXI, except drugs and other chemicals Section II relates to external causes of morbidity and mortality. This section contains all the terms classifiable to Chapter XX, except drugs and other chemicals. Section III, the Table of Drugs and Chemicals, lists for each substance the codes for poisonings and adverse effects of drugs classifiable to Chapter XIX, as well as the Chapter XX codes that indicate whether the poisoning was accidental, deliberate (self-harm), undetermined, or an adverse effect of a correct substance properly administered. Expanded introductory material is complemented by practical advice on how to make the best use of the index. To facilitate efficient coding, the index includes numerous diagnostic terms commonly used as synonyms for the terms officially accepted for use in the classification.