The root of a purpose section shall be 'section' in the HL7 namespace. The Purpose section SHALL contain a narrative block. The value for Section / code SHALL be "48764-5" "Summary purpose" 2.16.840.1.113883.6.1 LOINC STATIC. The Purpose section SHALL contain Section / title. PURPOSE SECTION LOINC CODE NEEDS UPDATING WHEN FINAL SPEC IS RELEASED. The Purpose section SHOULD include one or more purpose activities (templateId 2.16.840.1.113883.10.20.1.30). Section / title SHOULD be valued with a case-insensitive language-insensitive text string containing “purpose”.