ICD-11 stands for International Classification of Diseases, 11th Revision. It is a system used by medical doctors, researchers, and other professionals to classify and describe diseases, injuries, symptom, and causes of death. This system helps medical professionals to better understand health conditions, and makes it easier to communicate about health issues. Basically, it’s like a big list of health conditions put into categories. It helps doctors keep track of different diseases and injuries that people can have, so they know how to treat them.