Medical Coding Practice Test 2025 – 400 Free Practice Questions to Pass the Exam

The World Health Organization (WHO) is responsible for maintaining the ICD (International Classification of Diseases) coding system. This organization oversees the development and updates of the ICD, which is crucial for health management, statistics, and research on diseases and health conditions globally. The ICD serves as a universally accepted framework for the classification of diseases, injuries, and causes of death, facilitating the communication of health information across different countries and health systems.

While other entities, such as the Centers for Disease Control and Prevention (CDC) and the National Institutes of Health (NIH), play significant roles in public health and medical research in the United States, they do not manage the ICD directly. The United Nations (UN) does not have a direct role in maintaining the ICD coding system, as its focus is broader, encompassing a wide range of international issues beyond health classification systems.