Contains codesystems and valuesets as determined by NIHDI (RIZIV/INAMI), e.g. in the document https://www.inami.fgov.be/SiteCollectionDocuments/instructions_facturation_electronique.pdf . These CodeSystems and ValueSets are most likely to be replaced by international standard terminologies, such as SNOMED CT, LOINC, UCUM, and the like...
Nomenclature Article 36, Paragraph 2
https://github.com/hl7-be/mycarenet/issues/58