| Name | Value | Comments | 
|---|
 abstract | false |  | 
 baseDefinition | http://hl7.org/fhir/StructureDefinition/Extension |  | 
 copyright | Used by permission of HL7 International, all rights reserved Creative Commons License |  | 
 date | 2019-05-21 | 2022-11-16 |  | 
 description | 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' | This email address is associated with a ["Direct Secure Messaging"](https://directtrust.org/what-we-do/direct-secure-messaging) service.  This extension can only be used on contact points where the system = 'email' |  | 
 experimental |  |  | 
 fhirVersion | 4.0.1 |  | 
 jurisdiction |  |  | 
  jurisdiction[0] | urn:iso:std:iso:3166#US |  | 
 kind | complex-type |  | 
 name | USCoreDirectEmailExtension |  | 
 publisher | HL7 International - US Realm Steering Committee | HL7 International - Cross-Group Projects |  | 
 purpose |  |  | 
 status | active |  | 
 title | US Core Direct email Extension |  | 
 type | Extension |  | 
 url | http://hl7.org/fhir/us/core/StructureDefinition/us-core-direct |  | 
 version | 4.0.0 | 6.0.0-ballot |  | 
| Name | L Flags | L Card. | L Type | L Description & Constraints | R Flags | R Card. | L Type | L Description & Constraints | Comments  | 
|---|
   Extension  |  | 0..1 | Extension | Email is a "direct" email
  |  | 0..1 | Extension | Email is a "Direct" email
  | - Elements differ in definition: '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'' vs 'This email address is associated with a "Direct Secure Messaging" service. This extension can only be used on contact points where the system = 'email''
 
  | 
    id  |  | 0..1 | string | Unique id for inter-element referencing |  | 0..1 | string | Unique id for inter-element referencing |  | 
    Slices for extension  |  | 0..* | Extension | Additional content defined by implementations Slice: Unordered, Open by value:url
  |  | 0..* | Extension | Additional content defined by implementations Slice: Unordered, Open by value:url
  |  | 
    url  |  | 1..1 | uri | "http://hl7.org/fhir/us/core/StructureDefinition/us-core-direct" |  | 1..1 | uri | "http://hl7.org/fhir/us/core/StructureDefinition/us-core-direct" |  | 
    Slices for value[x]  |  | 1..1 | boolean | Value of extension Slice: Unordered, Closed by type:$this |  | 1..1 | boolean | Value of extension |  | 
   Documentation for this format |