This is the CodeSystem that contains codes in both EHMI Endpoint Register (EER) - MedComMessageDefinitionType CodeSystem (http://medcomehmi.dk/ig/terminology/CodeSystem/eer-medcom-message-definition-type) and EHMI Endpoint Register (EER) - MedComMessageDefinitionType CodeSystem (http://medcomehmi.dk/ig/terminology/CodeSystem/eer-medcom-message-definition-type).