比较ＩＣＤ９ 和ＩＣＤ１０ 两个分类系统，它们存在着不少差异。从版式结构到分类规则，甚至到中文译本的译法和索引的排列方法都有新的变化。ＩＣＤ１０ 的主要特点是新、全、细。它包括了近年来对疾病的新认识，有一个更为全面、丰富的索引，疾病分组更详细，比ＩＣＤ９ 扩展了１－６ 倍的容量。它的应用范围不仅考虑到疾病统计生命统计，而且照顾到医院管理、科研和医院付款的使用。 Comparison of ICD  9 and ICD  10 two classification system, there are many differences between them. New changes have taken place in the translation and indexing of layouts to taxonomies, even to Chinese translations. The main features of ICD 10 is new, full and fine. It includes a new understanding of the disease in recent years, a more comprehensive and rich index, a more detailed grouping of diseases, and an expansion of 1-6 times the capacity of ICD-9. Its scope of application takes into account not only statistical vital statistics of diseases, but also the use of hospital management, research and hospital payments.