This is the ValueSet that contains all the codes in UCUM printSymbol supplement (http://ehealth.sundhed.dk/vs/ehealth-ucum-printsymbol-supplement) and UCUM printSymbol supplement (http://ehealth.sundhed.dk/vs/ehealth-ucum-printsymbol-supplement). E.g. what you have to deal with if you get resources containing codes in either of them