Name Flags Card. Type Description & Constraints doco
. . Extension 0..1 Email is a "direct" email
. . . url "http://hl7.org/fhir/us/core/StructureDefinition/us-core-direct"
. . . valueBoolean 0..1 boolean

doco Documentation for this format
<status value="draft" /> <date value="2016-08-01" /> <publisher value="HL7 US Realm Steering Committee" /> <contact> <telecom> <system value="url" /> <value value="http://www.healthit.gov" /> </telecom> </contact> <description value="This email address is associated with a [direct](http://wiki.directproject.org/Addressing+Specification) service. This extension can only be used on contact points where the system = 'email'" /> <fhirVersion value="3.1.0" /> <mapping> <identity value="rim" /> <uri value="http://hl7.org/v3" /> <name value="RIM Mapping" /> </mapping> <kind value="complex-type" /> <abstract value="false" /> <contextType value="datatype" /> <context value="ContactPoint" /> <type value="Extension" /> <baseDefinition value="http://hl7.org/fhir/StructureDefinition/Extension" /> <derivation value="constraint" /> <differential> <element id="Extension:direct"> <path value="Extension" /> <sliceName value="direct" /> <short value="Email is a "direct" email" /> <definition value="This email address is associated with a "direct" service - e.g. http://wiki.directproject.org/Addressing+Specification. This extension can only be used on contact points where the system = 'email'" /> <comment value="This extension can only be used on contact points where the system = 'email'." /> <min value="0" /> <max value="1" /> <isModifier value="false" /> <mapping> <identity value="v2" /> <map value="No v2 equivalent" /> </mapping> <mapping> <identity value="rim" /> <map value="No RIM equivalent" /> </mapping> </element> <element id="Extension:direct.url"> <path value="Extension.url" /> <fixedUri value="http://hl7.org/fhir/us/core/StructureDefinition/us-core-direct" /> </element> <element id="Extension:direct.valueBoolean"> <path value="Extension.valueBoolean" /> <min value="0" /> <max value="1" /> <type> <code value="boolean" /> </type> </element> </differential> </StructureDefinition>