This is the CodeSystem that contains codes in both Id Doc Input Type (https://www.ehealth.fgov.be/standards/fhir/nihdi-terminology/CodeSystem/be-cs-id-doc-input-type) and Id Doc Input Type (https://www.ehealth.fgov.be/standards/fhir/nihdi-terminology/CodeSystem/be-cs-id-doc-input-type).