An international diagnostic code, or international classification of diseases, is a diagnostic tool used by health-related providers to track diseases and health problems, according to the World Health Organization. Many countries use the ICD as an indicator of the overall health of a country and its population.
ICD is used by numerous health industry professionals, including physicians, nurses, policy makers, researchers and insurers. They use the stystem to classify diseases and health problems listed on various health and vital records, explains the World Health Organization. As of 2015, ICD is in its 10th revision, known as ICD-10, and has been in effect since 1994. ICD-11 is scheduled for release in 2018.