What does transcoding health code mean after medical observation?

"Code conversion" means that the prevention and control headquarters of the county (city, district) where the residents are located conducts a preliminary review according to the changes of everyone's health management information, and the city (state) prevention and control headquarters rechecks and determines, and finally the health code system updates the health code color according to relevant information. The transcoding of health code after medical observation is: information updates the color of health code.