This is the ValueSet that contains all the codes in BR Populacao Tradicional (https://terminologia.saude.gov.br/fhir/ValueSet/BRPopulacaoTradicional) and BR Populacao Tradicional (https://terminologia.saude.gov.br/fhir/ValueSet/BRPopulacaoTradicional). E.g. what you have to deal with if you get resources containing codes in either of them