This code system http://terminology.hl7.org/CodeSystem/participant-type defines the following codes:

CodeDisplayDefinition
translator TranslatorA translator who is facilitating communication with the patient during the encounter.
emergency EmergencyA person to be contacted in case of an emergency during the encounter.
 <status value="draft"/> <experimental value="false"/> <date value="2022-11-04T18:21:49-06:00"/> <publisher value="FHIR Project team"/> <contact> <telecom> <system value="url"/> <value value="http://hl7.org/fhir"/> </telecom> </contact> <description value="This value set defines a set of codes that can be used to indicate how an individual participates in an encounter."/> <caseSensitive value="true"/> <content value="complete"/> <concept> <code value="translator"/> <display value="Translator"/> <definition value="A translator who is facilitating communication with the patient during the encounter."/> </concept> <concept> <code value="emergency"/> <display value="Emergency"/> <definition value="A person to be contacted in case of an emergency during the encounter."/> </concept> </CodeSystem>