t() :: %HL7.Segment.ORC{__segment__: term, callback_phone: HL7.Composite.XTN.t, entered_by: HL7.Composite.XCN.t, enterers_location: HL7.Composite.PL.t, filler_order: HL7.Composite.EI.t, order_control: binary, order_status: binary, ordering_provider: HL7.Composite.XCN.t, parent: HL7.Composite.CM_OBR_29.t, placer_group: HL7.Composite.EI.t, placer_order: HL7.Composite.EI.t, response_flag: binary, timing: HL7.Composite.TQ.t, transaction_datetime: :calendar.datetime, verified_by: HL7.Composite.XCN.t}