国际疾病伤害及死因分类标准（英语：International Statistical Classification of Diseases and Related Health Problems；常用缩写：ICD）是一个提供编号，以对疾病与许多征兆、症状、异常、不适、社会环境与外伤等所做的分类。由联合国世界卫生组织创立。任何健康状况皆分配到专属的分类，以及最长含6字的编号。

目前最新的版本为国际疾病伤害及死因分类标准第十版（ICD-10）。ICD只有疾病诊断与健康条件的信息，却未包含功能性状态的描述，因此世界卫生组织于2001年批准了国际健康功能与身心障碍分类系统（International Classification of Functioning, Disability, and Health，常用缩写：ICF）的国际通用版本，ICF分类系统补充了ICD-10的不足。ICD与ICF目前是世界卫生组织国际分类家族（WHO-FIC）中的核心分类系统。

The International Statistical Classification of Diseases and Related Health Problems, usually called by the short-form name International Classification of Diseases (ICD), is the international "standard diagnostic tool for epidemiology, health management and clinical purposes". The ICD is maintained by the World Health Organization (WHO), the directing and coordinating authority for health within the United Nations System. The ICD is designed as a health care classification system, providing a system of diagnostic codes for classifying diseases, including nuanced classifications of a wide variety of signs, symptoms, abnormal findings, complaints, social circumstances, and external causes of injury or disease. This system is designed to map health conditions to corresponding generic categories together with specific variations, assigning for these a designated code, up to six characters long. Thus, major categories are designed to include a set of similar diseases.