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