The International Classification of Diseases (ICD) is a global standard for diagnosing and classifying health conditions. Developed by the World Health Organization (WHO), it provides a common language for health professionals to communicate about diseases, injuries, and other health-related issues. The ICD is regularly updated to reflect new medical knowledge and practices. The ICD is used by healthcare providers, researchers, and policymakers to track health trends, allocate resources, and improve patient care. It helps in coding diagnoses for billing and insurance purposes, ensuring consistency in health data across different countries and healthcare systems.