从1987年起,我国的死因报表已按国际疾病分类ICD第9版作了修订,开始应用ICD“根本死因”的概念进行分类汇总。同时,在我国部分地区也开始采用国际死亡医学证明书的基本格式进行死因登记,“根本死因”这一概念开始为医务人员和死因统计人员所接受。但是,大部分地区由于各种原因仍在使用旧式死亡报告单,医务人员大多按直接导致死亡的原因登记,造成死因分类的不统一,不利于不同地区之间的比较。有关肺心病的填写、分类就是一个很突出的问题。医务人员往往不管造成肺心病的原因是原发性肺源性心脏病还是慢性支气管炎、哮喘、肺气肿所致的继发性肺源性心脏 Since 1987, the death cause report in China has been revised according to the International Classification of Diseases, ICD 9th Edition, and the concept of “fundamental cause of death” of ICD has been used to carry out sub-assembly. At the same time, the registration of causes of death was also started in some parts of our country using the basic format of the international certificate of medical death, and the concept of “fundamental cause of death” began to be accepted by medical staffs and cause-of-death statisticians. However, most areas still use old-style death report forms for various reasons. Medical staffs mostly register directly for the cause of death, resulting in the non-uniform classification of causes of death and not conducive to comparison among different regions. Coronary heart disease fill in, classification is a very prominent issue. Medical staff often cause pulmonary heart disease is caused by primary pulmonary heart disease or chronic bronchitis, asthma, emphysema caused by secondary pulmonary heart