@type t() :: %HL7v2.Segment.QRD{
  deferred_response_date_time: term(),
  deferred_response_type: term(),
  extra_fields: term(),
  quantity_limited_request: term(),
  query_date_time: term(),
  query_format_code: term(),
  query_id: term(),
  query_priority: term(),
  query_results_level: term(),
  what_data_code_value_qual: term(),
  what_department_data_code: term(),
  what_subject_filter: term(),
  who_subject_filter: term()
}