How often is ICD-10 codes updated?

ICD-10 codes are updated annually by the World Health Organization (WHO) and the Centers for Medicare & Medicaid Services (CMS) in the United States. These updates typically occur on October 1st each year, with new codes, revisions, and deletions implemented at that time. Additionally, the WHO occasionally releases updates to the International Classification of Diseases (ICD) system itself, which may lead to changes in coding practices.