Pathway (PTH) segment -- HL7v2 v2.5.1.
Contains pathway (clinical pathway/care plan) information. 6 fields per HL7 v2.5.1 specification.
@type t() :: %HL7v2.Segment.PTH{ action_code: term(), change_pathway_life_cycle_status_date_time: term(), extra_fields: term(), pathway_established_date_time: term(), pathway_id: term(), pathway_instance_id: term(), pathway_life_cycle_status: term() }