ICD-10 codes For starters, the World Health Organization (WHO) developed an International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM) code for COVID-19: U07.1 COVID-19. The Centers for Disease Control and Prevention (CDC) adopted the code in March when the US government declared the COVID-19 pandemic a national public health emergency. The code became effective on April 1, 2020. Since then, the Centers for Medicare and Medicaid Services (CMS)