This is the ValueSet that contains codes in both BR Grau Certeza Alergias Reacoes Adversas (https://terminologia.saude.gov.br/fhir/ValueSet/BRGrauCertezaAlergiasReacoesAdversas) and BR Grau Certeza Alergias Reacoes Adversas (https://terminologia.saude.gov.br/fhir/ValueSet/BRGrauCertezaAlergiasReacoesAdversas).