EUPHEMISM noun; plural noun: euphemisms
a mild or indirect word or expression substituted for one considered to be too harsh or blunt when referring to something unpleasant or embarrassing. “downsizing” as a euphemism for cuts"
synonyms: polite term, indirect term, circumlocution, substitute, alternative, understatement, genteelism see google.com, “euphemism”
If someone is using coded language, they are expressing their opinion in an indirect way, usually because that opinion is likely to offend people. See reverso link
example of the use of coded language:
New Gingrich has repeatedly referred to President Obama as “The Food Stamp” President while contrasting that with his own aims to become “The Paycheck” President.
From the crunkfeministcollective
Whether the use of euphemisms or coded language is racist or not cannot really be definitively answered because one never knows what the inner motives of another person are. However, because these types of expression can seem or feel racist or prejudicial
they should be avoided by anyone who wants to be clearly understood.