The CDC recently codified International Classification of Disease (ICD) codes for COVID-19 vaccine status. ICD codes are extensively used in medical records, medical insurance data and health research to classify precisely disease states as well as injuries from exogenous agents such as accidents, medication and medical device injuries, toxic chemicals, etc. Vaccination status is not a disease or an injury state, yet CDC has rationalized creating ICD codes for it. The coding is set to become effective on April 1, 2023. Read more.