GDHCN Trust Network - Personal Health Wallet
0.1.0 - ci-build
GDHCN Trust Network - Personal Health Wallet
0.1.0 - ci-build
GDHCN Trust Network - Personal Health Wallet, published by WHO. This guide is not an authorized publication; it is the continuous build for version 0.1.0 built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/WorldHealthOrganization/smart-trust-phw/ and changes regularly. See the Directory of published versions
| Draft as of 2025-09-06 |
XML representation of the HealthLinkPayload logical model.
<StructureDefinition xmlns="http://hl7.org/fhir">
<id value="HealthLinkPayload"/>
<text>
<status value="extensions"/>
<div xmlns="http://www.w3.org/1999/xhtml"><p class="res-header-id"><b>Generated Narrative: StructureDefinition HealthLinkPayload</b></p><table border="0" cellpadding="0" cellspacing="0" style="border: 0px #F0F0F0 solid; font-size: 11px; font-family: verdana; vertical-align: top;"><tr style="border: 1px #F0F0F0 solid; font-size: 11px; font-family: verdana; vertical-align: top"><th style="vertical-align: top; text-align : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; padding-top: 3px; padding-bottom: 3px" class="hierarchy"><a href="https://build.fhir.org/ig/FHIR/ig-guidance/readingIgs.html#table-views" title="The logical name of the element">Name</a></th><th style="vertical-align: top; text-align : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; padding-top: 3px; padding-bottom: 3px" class="hierarchy"><a href="https://build.fhir.org/ig/FHIR/ig-guidance/readingIgs.html#table-views" title="Information about the use of the element">Flags</a></th><th style="vertical-align: top; text-align : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; padding-top: 3px; padding-bottom: 3px" class="hierarchy"><a href="https://build.fhir.org/ig/FHIR/ig-guidance/readingIgs.html#table-views" title="Minimum and Maximum # of times the element can appear in the instance">Card.</a></th><th style="vertical-align: top; text-align : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; padding-top: 3px; padding-bottom: 3px; width: 100px" class="hierarchy"><a href="https://build.fhir.org/ig/FHIR/ig-guidance/readingIgs.html#table-views" title="Reference to the type of the element">Type</a></th><th style="vertical-align: top; text-align : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; padding-top: 3px; padding-bottom: 3px" class="hierarchy"><a href="https://build.fhir.org/ig/FHIR/ig-guidance/readingIgs.html#table-views" title="Additional information about the element">Description & Constraints</a><span style="float: right"><a href="https://build.fhir.org/ig/FHIR/ig-guidance/readingIgs.html#table-views" title="Legend for this format"><img src="data:image/png;base64,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" alt="doco" style="background-color: inherit"/></a></span></th></tr><tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color: white"><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image: url(tbl_bck1.png)" class="hierarchy"><img src="tbl_spacer.png" alt="." style="background-color: inherit" class="hierarchy"/><img src="icon_element.gif" alt="." style="background-color: white; background-color: inherit" title="Element" class="hierarchy"/> <a href="StructureDefinition-HealthLinkPayload-definitions.html#HealthLinkPayload" title="Health Link Payload (DRAFT)
A Health Link URI is generated from this payload according to the algorithm documented [here](https://build.fhir.org/ig/HL7/smart-health-cards-and-links/links-specification.html#smart-health-links-sharing-application-generates-a-smart-health-link-uri)
">HealthLinkPayload</a><a name="HealthLinkPayload"> </a></td><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"/><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"><span style="opacity: 0.5">0</span><span style="opacity: 0.5">..</span><span style="opacity: 0.5">*</span></td><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"><a href="http://build.fhir.org/types.html#Base">Base</a></td><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy">Health Link Payload (DRAFT)</td></tr>
<tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color: #F7F7F7"><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image: url(tbl_bck10.png)" class="hierarchy"><img src="tbl_spacer.png" alt="." style="background-color: inherit" class="hierarchy"/><img src="tbl_vjoin.png" alt="." style="background-color: inherit" class="hierarchy"/><img src="icon_primitive.png" alt="." style="background-color: #F7F7F7; background-color: inherit" title="Primitive Data Type" class="hierarchy"/> <a href="StructureDefinition-HealthLinkPayload-definitions.html#HealthLinkPayload.url" title="Manifest URL for this Health Link">url</a><a name="HealthLinkPayload.url"> </a></td><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"/><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy">1..1</td><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"><a href="http://hl7.org/fhir/R4/datatypes.html#string">string</a></td><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy">url</td></tr>
<tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color: white"><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image: url(tbl_bck10.png)" class="hierarchy"><img src="tbl_spacer.png" alt="." style="background-color: inherit" class="hierarchy"/><img src="tbl_vjoin.png" alt="." style="background-color: inherit" class="hierarchy"/><img src="icon_primitive.png" alt="." style="background-color: white; background-color: inherit" title="Primitive Data Type" class="hierarchy"/> <a href="StructureDefinition-HealthLinkPayload-definitions.html#HealthLinkPayload.key" title="Decryption key for processing files returned in the manifest. 43 characters, consisting of 32 random bytes base64urlencoded.">key</a><a name="HealthLinkPayload.key"> </a></td><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"/><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy">1..1</td><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"><a href="http://hl7.org/fhir/R4/datatypes.html#string">string</a></td><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy">Decryption key for processing files returned in the manifest. 43 characters, consisting of 32 random bytes base64urlencoded.</td></tr>
<tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color: #F7F7F7"><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image: url(tbl_bck10.png)" class="hierarchy"><img src="tbl_spacer.png" alt="." style="background-color: inherit" class="hierarchy"/><img src="tbl_vjoin.png" alt="." style="background-color: inherit" class="hierarchy"/><img src="icon_primitive.png" alt="." style="background-color: #F7F7F7; background-color: inherit" title="Primitive Data Type" class="hierarchy"/> <a href="StructureDefinition-HealthLinkPayload-definitions.html#HealthLinkPayload.exp" title="Optional. Number representing expiration time in Epoch seconds, as a hint to help the Health Link Receiving Application determine if this QR is stale. (Note: epoch times should be parsed into 64-bit numeric types.)">exp</a><a name="HealthLinkPayload.exp"> </a></td><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"/><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy">0..1</td><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"><a href="http://hl7.org/fhir/R4/datatypes.html#string">string</a></td><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy">Optional. Number representing expiration time in Epoch seconds, as a hint to help the Health Link Receiving Application determine if this QR is stale. (Note: epoch times should be parsed into 64-bit numeric types.)</td></tr>
<tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color: white"><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image: url(tbl_bck10.png)" class="hierarchy"><img src="tbl_spacer.png" alt="." style="background-color: inherit" class="hierarchy"/><img src="tbl_vjoin.png" alt="." style="background-color: inherit" class="hierarchy"/><img src="icon_primitive.png" alt="." style="background-color: white; background-color: inherit" title="Primitive Data Type" class="hierarchy"/> <a href="StructureDefinition-HealthLinkPayload-definitions.html#HealthLinkPayload.flag" title="Optional. String created by concatenating single-character flags in alphabetical order:
'L' indicates the Health Link is intended for long-term use and manifest content can evolve over time;
'P' indicates the Health Link requires a Passcode to resolves; and 'U' indicates the Health Link's url resolves to a single encrypted file accessible via GET, bypassing the manifest and SHALL NOT be used in combination with P.
">flag</a><a name="HealthLinkPayload.flag"> </a></td><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"/><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy">0..1</td><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"><a href="http://hl7.org/fhir/R4/datatypes.html#string">string</a></td><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy">Optional. String created by concatenating single-character flags in alphabetical order:
'L' indicates the Health Link is intended for long-term use and manifest content can evolve over time;
'P' indicates the Health Link requires a Passcode to resolves; and 'U' indicates the Health Link's url resolves to a single encrypted file accessible via GET, bypassing the manifest and SHALL NOT be used in combination with P.
</td></tr>
<tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color: #F7F7F7"><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image: url(tbl_bck10.png)" class="hierarchy"><img src="tbl_spacer.png" alt="." style="background-color: inherit" class="hierarchy"/><img src="tbl_vjoin.png" alt="." style="background-color: inherit" class="hierarchy"/><img src="icon_primitive.png" alt="." style="background-color: #F7F7F7; background-color: inherit" title="Primitive Data Type" class="hierarchy"/> <a href="StructureDefinition-HealthLinkPayload-definitions.html#HealthLinkPayload.label" title="Optional. String no longer than 80 characters that provides a short description of the data behind the Health Link.">label</a><a name="HealthLinkPayload.label"> </a></td><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"/><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy">0..1</td><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"><a href="http://hl7.org/fhir/R4/datatypes.html#string">string</a></td><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy">Optional. String no longer than 80 characters that provides a short description of the data behind the Health Link.</td></tr>
<tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color: white"><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image: url(tbl_bck10.png)" class="hierarchy"><img src="tbl_spacer.png" alt="." style="background-color: inherit" class="hierarchy"/><img src="tbl_vjoin.png" alt="." style="background-color: inherit" class="hierarchy"/><img src="icon_primitive.png" alt="." style="background-color: white; background-color: inherit" title="Primitive Data Type" class="hierarchy"/> <a href="StructureDefinition-HealthLinkPayload-definitions.html#HealthLinkPayload.v" title="Optional. Integer representing the Health Links protocol version this Health Link conforms to. MAY be omitted when the default value (1) applies.">v</a><a name="HealthLinkPayload.v"> </a></td><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"/><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy">0..1</td><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"><a href="http://hl7.org/fhir/R4/datatypes.html#string">string</a></td><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy">Optional. Integer representing the Health Links protocol version this Health Link conforms to. MAY be omitted when the default value (1) applies.</td></tr>
<tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color: #F7F7F7"><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image: url(tbl_bck00.png)" class="hierarchy"><img src="tbl_spacer.png" alt="." style="background-color: inherit" class="hierarchy"/><img src="tbl_vjoin_end.png" alt="." style="background-color: inherit" class="hierarchy"/><img src="icon_primitive.png" alt="." style="background-color: #F7F7F7; background-color: inherit" title="Primitive Data Type" class="hierarchy"/> <a href="StructureDefinition-HealthLinkPayload-definitions.html#HealthLinkPayload.type" title="Classifying type code to distinguish different types of health links. If not present then the Health Link is a SMART Health Link.">type</a><a name="HealthLinkPayload.type"> </a></td><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"/><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy">0..1</td><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"><a href="http://hl7.org/fhir/R4/datatypes.html#code">code</a></td><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy">Classifying type code to distinguish different types of health links. If not present then the Health Link is a SMART Health Link.</td></tr>
<tr><td colspan="5" class="hierarchy"><br/><a href="https://build.fhir.org/ig/FHIR/ig-guidance/readingIgs.html#table-views" title="Legend for this format"><img src="data:image/png;base64,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" alt="doco" style="background-color: inherit"/> Documentation for this format</a></td></tr></table></div>
</text>
<url
value="http://hl7.org/fhir/uv/smart-health-cards-and-links/StructureDefinition/HealthLinkPayload"/>
<version value="0.1.0"/>
<name value="HealthLinkPayload"/>
<title value="Health Link Payload (DRAFT)"/>
<status value="draft"/>
<date value="2025-09-06T13:36:22+00:00"/>
<publisher value="WHO"/>
<contact>
<name value="WHO"/>
<telecom>
<system value="url"/>
<value value="http://who.int"/>
</telecom>
</contact>
<description
value="Health Link Payload (DRAFT)
A Health Link URI is generated from this payload according to the algorithm documented [here](https://build.fhir.org/ig/HL7/smart-health-cards-and-links/links-specification.html#smart-health-links-sharing-application-generates-a-smart-health-link-uri)
"/>
<jurisdiction>
<coding>
<system value="http://unstats.un.org/unsd/methods/m49/m49.htm"/>
<code value="001"/>
<display value="World"/>
</coding>
</jurisdiction>
<fhirVersion value="4.0.1"/>
<kind value="logical"/>
<abstract value="false"/>
<type
value="http://hl7.org/fhir/uv/smart-health-cards-and-links/StructureDefinition/HealthLinkPayload"/>
<baseDefinition value="http://hl7.org/fhir/StructureDefinition/Base"/>
<derivation value="specialization"/>
<snapshot>
<extension
url="http://hl7.org/fhir/tools/StructureDefinition/snapshot-base-version">
<valueString value="4.0.1"/>
</extension>
<element id="HealthLinkPayload">
<path value="HealthLinkPayload"/>
<short value="Health Link Payload (DRAFT)"/>
<definition
value="Health Link Payload (DRAFT)
A Health Link URI is generated from this payload according to the algorithm documented [here](https://build.fhir.org/ig/HL7/smart-health-cards-and-links/links-specification.html#smart-health-links-sharing-application-generates-a-smart-health-link-uri)
"/>
<min value="0"/>
<max value="*"/>
<base>
<path value="Base"/>
<min value="0"/>
<max value="*"/>
</base>
<isModifier value="false"/>
</element>
<element id="HealthLinkPayload.url">
<path value="HealthLinkPayload.url"/>
<short value="url"/>
<definition value="Manifest URL for this Health Link"/>
<min value="1"/>
<max value="1"/>
<base>
<path value="HealthLinkPayload.url"/>
<min value="1"/>
<max value="1"/>
</base>
<type>
<code value="string"/>
</type>
</element>
<element id="HealthLinkPayload.key">
<path value="HealthLinkPayload.key"/>
<short
value="Decryption key for processing files returned in the manifest. 43 characters, consisting of 32 random bytes base64urlencoded."/>
<definition
value="Decryption key for processing files returned in the manifest. 43 characters, consisting of 32 random bytes base64urlencoded."/>
<min value="1"/>
<max value="1"/>
<base>
<path value="HealthLinkPayload.key"/>
<min value="1"/>
<max value="1"/>
</base>
<type>
<code value="string"/>
</type>
</element>
<element id="HealthLinkPayload.exp">
<path value="HealthLinkPayload.exp"/>
<short
value="Optional. Number representing expiration time in Epoch seconds, as a hint to help the Health Link Receiving Application determine if this QR is stale. (Note: epoch times should be parsed into 64-bit numeric types.)"/>
<definition
value="Optional. Number representing expiration time in Epoch seconds, as a hint to help the Health Link Receiving Application determine if this QR is stale. (Note: epoch times should be parsed into 64-bit numeric types.)"/>
<min value="0"/>
<max value="1"/>
<base>
<path value="HealthLinkPayload.exp"/>
<min value="0"/>
<max value="1"/>
</base>
<type>
<code value="string"/>
</type>
</element>
<element id="HealthLinkPayload.flag">
<path value="HealthLinkPayload.flag"/>
<short
value="Optional. String created by concatenating single-character flags in alphabetical order:
'L' indicates the Health Link is intended for long-term use and manifest content can evolve over time;
'P' indicates the Health Link requires a Passcode to resolves; and 'U' indicates the Health Link's url resolves to a single encrypted file accessible via GET, bypassing the manifest and SHALL NOT be used in combination with P.
"/>
<definition
value="Optional. String created by concatenating single-character flags in alphabetical order:
'L' indicates the Health Link is intended for long-term use and manifest content can evolve over time;
'P' indicates the Health Link requires a Passcode to resolves; and 'U' indicates the Health Link's url resolves to a single encrypted file accessible via GET, bypassing the manifest and SHALL NOT be used in combination with P."/>
<min value="0"/>
<max value="1"/>
<base>
<path value="HealthLinkPayload.flag"/>
<min value="0"/>
<max value="1"/>
</base>
<type>
<code value="string"/>
</type>
</element>
<element id="HealthLinkPayload.label">
<path value="HealthLinkPayload.label"/>
<short
value="Optional. String no longer than 80 characters that provides a short description of the data behind the Health Link."/>
<definition
value="Optional. String no longer than 80 characters that provides a short description of the data behind the Health Link."/>
<min value="0"/>
<max value="1"/>
<base>
<path value="HealthLinkPayload.label"/>
<min value="0"/>
<max value="1"/>
</base>
<type>
<code value="string"/>
</type>
</element>
<element id="HealthLinkPayload.v">
<path value="HealthLinkPayload.v"/>
<short
value="Optional. Integer representing the Health Links protocol version this Health Link conforms to. MAY be omitted when the default value (1) applies."/>
<definition
value="Optional. Integer representing the Health Links protocol version this Health Link conforms to. MAY be omitted when the default value (1) applies."/>
<min value="0"/>
<max value="1"/>
<base>
<path value="HealthLinkPayload.v"/>
<min value="0"/>
<max value="1"/>
</base>
<type>
<code value="string"/>
</type>
</element>
<element id="HealthLinkPayload.type">
<path value="HealthLinkPayload.type"/>
<short
value="Classifying type code to distinguish different types of health links. If not present then the Health Link is a SMART Health Link."/>
<definition
value="Classifying type code to distinguish different types of health links. If not present then the Health Link is a SMART Health Link."/>
<min value="0"/>
<max value="1"/>
<base>
<path value="HealthLinkPayload.type"/>
<min value="0"/>
<max value="1"/>
</base>
<type>
<code value="code"/>
</type>
</element>
</snapshot>
<differential>
<element id="HealthLinkPayload">
<path value="HealthLinkPayload"/>
<short value="Health Link Payload (DRAFT)"/>
<definition
value="Health Link Payload (DRAFT)
A Health Link URI is generated from this payload according to the algorithm documented [here](https://build.fhir.org/ig/HL7/smart-health-cards-and-links/links-specification.html#smart-health-links-sharing-application-generates-a-smart-health-link-uri)
"/>
</element>
<element id="HealthLinkPayload.url">
<path value="HealthLinkPayload.url"/>
<short value="url"/>
<definition value="Manifest URL for this Health Link"/>
<min value="1"/>
<max value="1"/>
<type>
<code value="string"/>
</type>
</element>
<element id="HealthLinkPayload.key">
<path value="HealthLinkPayload.key"/>
<short
value="Decryption key for processing files returned in the manifest. 43 characters, consisting of 32 random bytes base64urlencoded."/>
<definition
value="Decryption key for processing files returned in the manifest. 43 characters, consisting of 32 random bytes base64urlencoded."/>
<min value="1"/>
<max value="1"/>
<type>
<code value="string"/>
</type>
</element>
<element id="HealthLinkPayload.exp">
<path value="HealthLinkPayload.exp"/>
<short
value="Optional. Number representing expiration time in Epoch seconds, as a hint to help the Health Link Receiving Application determine if this QR is stale. (Note: epoch times should be parsed into 64-bit numeric types.)"/>
<definition
value="Optional. Number representing expiration time in Epoch seconds, as a hint to help the Health Link Receiving Application determine if this QR is stale. (Note: epoch times should be parsed into 64-bit numeric types.)"/>
<min value="0"/>
<max value="1"/>
<type>
<code value="string"/>
</type>
</element>
<element id="HealthLinkPayload.flag">
<path value="HealthLinkPayload.flag"/>
<short
value="Optional. String created by concatenating single-character flags in alphabetical order:
'L' indicates the Health Link is intended for long-term use and manifest content can evolve over time;
'P' indicates the Health Link requires a Passcode to resolves; and 'U' indicates the Health Link's url resolves to a single encrypted file accessible via GET, bypassing the manifest and SHALL NOT be used in combination with P.
"/>
<definition
value="Optional. String created by concatenating single-character flags in alphabetical order:
'L' indicates the Health Link is intended for long-term use and manifest content can evolve over time;
'P' indicates the Health Link requires a Passcode to resolves; and 'U' indicates the Health Link's url resolves to a single encrypted file accessible via GET, bypassing the manifest and SHALL NOT be used in combination with P.
"/>
<min value="0"/>
<max value="1"/>
<type>
<code value="string"/>
</type>
</element>
<element id="HealthLinkPayload.label">
<path value="HealthLinkPayload.label"/>
<short
value="Optional. String no longer than 80 characters that provides a short description of the data behind the Health Link."/>
<definition
value="Optional. String no longer than 80 characters that provides a short description of the data behind the Health Link."/>
<min value="0"/>
<max value="1"/>
<type>
<code value="string"/>
</type>
</element>
<element id="HealthLinkPayload.v">
<path value="HealthLinkPayload.v"/>
<short
value="Optional. Integer representing the Health Links protocol version this Health Link conforms to. MAY be omitted when the default value (1) applies."/>
<definition
value="Optional. Integer representing the Health Links protocol version this Health Link conforms to. MAY be omitted when the default value (1) applies."/>
<min value="0"/>
<max value="1"/>
<type>
<code value="string"/>
</type>
</element>
<element id="HealthLinkPayload.type">
<path value="HealthLinkPayload.type"/>
<short
value="Classifying type code to distinguish different types of health links. If not present then the Health Link is a SMART Health Link."/>
<definition
value="Classifying type code to distinguish different types of health links. If not present then the Health Link is a SMART Health Link."/>
<min value="0"/>
<max value="1"/>
<type>
<code value="code"/>
</type>
</element>
</differential>
</StructureDefinition>