The root of an Advance Directives section shall be 'section' in the HL7 namespace. The Advance Directives section SHALL contain a narrative block. The value for Section / code SHALL be '42348-3' 'Advance directives' 2.16.840.1.113883.6.1 LOINC STATIC. The Advance Directives section SHALL contain Section / title. The Purpose section SHOULD include one or more advance directive observations (templateId 2.16.840.1.113883.10.20.1.17) There SHOULD be an advance directive observation whos value for Observation / code is '304251008' 'Resuscitation status' 2.16.840.1.113883.6.96 SNOMED CT STATIC. Section / title SHOULD be valued with a case-insensitive language-insensitive text string containing “advance directives”.