US Core Implementation Guide
9.0.0 - CI Build
US Core Implementation Guide
9.0.0 - CI Build
US Core Implementation Guide, published by HL7 International / Cross-Group Projects. This guide is not an authorized publication; it is the continuous build for version 9.0.0 built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/HL7/US-Core/ and changes regularly. See the Directory of published versions
| Page standards status: Trial-use | Maturity Level: 3 |
<Requirements xmlns="http://hl7.org/fhir">
<id value="us-core-certifying-system"/>
<text>
<status value="extensions"/>
<div xmlns="http://www.w3.org/1999/xhtml">
<p>These requirements apply to the actor: <i><strong>US Core Certifying System</strong></i></p>
<p><strong>Legend:</strong></p>
<ul>
<li><strong>Key:</strong> An identifier for the requirement.</li>
<li><strong>Context:</strong> The name and link to the narrative section that pertains to the requirement. There can be more than one narrative section that references the same requirement.</li>
<li><strong>Conformance:</strong> The conformance verb of the requirement: <strong>SHALL</strong>, <strong>SHOULD</strong>, <strong>MAY</strong>, <strong>SHALL-NOT</strong>, or <strong>SHOULD-NOT</strong>.</li>
<li><strong>Requirement:</strong> The actual requirements statement, which is a direct quote from the IG and may include helpful context in square brackets. Note that statements in the narrative section that contain multiple requirements in a single context are split into individual requirement statements.</li>
</ul>
<table class="grid">
<thead>
<tr>
<th>Key</th>
<th>Context</th>
<th>Conformance</th>
<th>Requirement</th>
</tr>
</thead>
<tbody>
<tr id="CONF-0011">
<td>CONF-0011</td>
<td>
<span style="color: grey;">•</span><a href="general-requirements.html#CONF-0011">general-requirements.html#profile-support--interaction-support</a><br/>
</td>
<td style="text-align: center;">SHALL</td>
<td><div><p>A Server that certifies to the <a href="https://www.federalregister.gov/d/2020-07419/p-1177">21st Century Cures Act for accessing patient data</a> <strong>SHALL</strong> implement all components in the USCDI [<a href="https://www.healthit.gov/isp/united-states-core-data-interoperability-uscdi">USCDI link</a>]</p>
</div></td>
</tr>
<tr id="CONF-0012">
<td>CONF-0012</td>
<td>
<span style="color: grey;">•</span><a href="general-requirements.html#CONF-0012">general-requirements.html#profile-support--interaction-support</a><br/>
</td>
<td style="text-align: center;">SHALL</td>
<td><div><p>A Server that certifies to the <a href="https://www.federalregister.gov/d/2020-07419/p-1177">21st Century Cures Act for accessing patient data</a> <strong>SHALL</strong> implement all components in the ... the US Core CapabilityStatement [<a href="https://hl7.org/fhir/us/core/CapabilityStatement-us-core-Server.html">Definition</a>] .</p>
</div></td>
</tr>
<tr id="CONF-0124">
<td>CONF-0124</td>
<td>
<span style="color: grey;">•</span><a href="scopes.html#CONF-0124">scopes.html#smart-scopes</a><br/>
</td>
<td style="text-align: center;">SHALL</td>
<td><div><p>Implementations meeting US EHR certification [of the ONC IT Health Certification program] requirements must support all US Core’s required scopes.</p>
</div></td>
</tr>
<tr id="CONF-0391">
<td>CONF-0391</td>
<td>
<span style="color: grey;">•</span><a href="StructureDefinition-us-core-immunization.html#CONF-0391">StructureDefinition-us-core-immunization.html#profile-specific-implementation-guidance</a><br/>
</td>
<td style="text-align: center;">SHALL</td>
<td><div><p>[For organization participating in the ONC Health IT Certification program] <a href="https://www2a.cdc.gov/vaccines/iis/iisstandards/ndc_crosswalk.asp">CVX vaccine codes</a> are required</p>
</div></td>
</tr>
<tr id="CONF-0392">
<td>CONF-0392</td>
<td>
<span style="color: grey;">•</span><a href="StructureDefinition-us-core-immunization.html#CONF-0392">StructureDefinition-us-core-immunization.html#profile-specific-implementation-guidance</a><br/>
</td>
<td style="text-align: center;">SHOULD</td>
<td><div><p><a href="http://www2a.cdc.gov/vaccines/iis/iisstandards/ndc_crosswalk.asp">NDC vaccine codes</a> <strong>SHOULD</strong> be supported as an additional code [of <a href="https://www2a.cdc.gov/vaccines/iis/iisstandards/ndc_crosswalk.asp">CVX Vaccine Codes</a>]</p>
</div></td>
</tr>
<tr id="CONF-0405">
<td>CONF-0405</td>
<td>
<span style="color: grey;">•</span><a href="StructureDefinition-us-core-medicationrequest.html#CONF-0405">StructureDefinition-us-core-medicationrequest.html#profile-specific-implementation-guidance</a><br/>
</td>
<td style="text-align: center;">SHALL</td>
<td><div><p>[For organization participating in the ONC Health IT Certification program Servers <strong>SHALL</strong> support the <a href="https://hl7.org/fhir/us/core/STU8/must-support.html#additional-uscdi-requirements">additional USCDI requirement</a>:], The reason or indication for the prescription</p>
</div></td>
</tr>
<tr id="CONF-0406">
<td>CONF-0406</td>
<td>
<span style="color: grey;">•</span><a href="StructureDefinition-us-core-medicationrequest.html#CONF-0406">StructureDefinition-us-core-medicationrequest.html#profile-specific-implementation-guidance</a><br/>
</td>
<td style="text-align: center;">SHALL</td>
<td><div><p>[For organization participating in the ONC Health IT Certification program Servers <strong>SHALL</strong> support the <a href="https://hl7.org/fhir/us/core/STU8/must-support.html#additional-uscdi-requirements">additional USCDI requirement</a>:] reported adherence to prescribed medication instructions</p>
</div></td>
</tr>
<tr id="CONF-0411">
<td>CONF-0411</td>
<td>
<span style="color: grey;">•</span><a href="StructureDefinition-us-core-medicationrequest.html#CONF-0411">StructureDefinition-us-core-medicationrequest.html#profile-specific-implementation-guidance</a><br/>
</td>
<td style="text-align: center;">SHALL</td>
<td><div><p>Although both MedicationRequest.reasonCode and MedicationRequest.reasonReference are marked as Additional USCDI Requirements [which are required for organizations participating in the ONC Health IT Certification program]. The certifying Server system is not required to support both, but <strong>SHALL</strong> support at least one of these elements</p>
</div></td>
</tr>
<tr id="CONF-0414">
<td>CONF-0414</td>
<td>
<span style="color: grey;">•</span><a href="StructureDefinition-us-core-medicationrequest.html#CONF-0414">StructureDefinition-us-core-medicationrequest.html#profile-specific-implementation-guidance</a><br/>
</td>
<td style="text-align: center;">SHALL</td>
<td><div><p>[For organizations participating in the ONC Health IT Certification program and supporting MedicationRequest.reasonReference,] Servers <strong>SHALL</strong> support at least one target resource in MedicationRequest.reasonReference</p>
</div></td>
</tr>
<tr id="CONF-0444">
<td>CONF-0444</td>
<td>
<span style="color: grey;">•</span><a href="StructureDefinition-us-core-simple-observation.html#CONF-0444">StructureDefinition-us-core-simple-observation.html#profile-specific-implementation-guidance</a><br/>
</td>
<td style="text-align: center;">SHALL</td>
<td><div><p>Although none of the Observation.derivedFrom <a href="https://hl7.org/fhir/us/core/STU8/must-support.html#must-support---resource-references">references are flagged as Must Support</a>, the Certifying System <em>SHALL</em>* support at least one of them</p>
</div></td>
</tr>
<tr id="CONF-0465">
<td>CONF-0465</td>
<td>
<span style="color: grey;">•</span><a href="StructureDefinition-us-core-patient.html#CONF-0465">StructureDefinition-us-core-patient.html#profile-specific-implementation-guidance</a><br/>
</td>
<td style="text-align: center;">SHALL</td>
<td><div><p>Although Patient.deceased[x] is marked as additional USCDI, certifying systems are not required to support both [boolean and dateTime data types], but <strong>SHALL</strong> support [at] least Patient.deceasedDateTime</p>
</div></td>
</tr>
<tr id="CONF-0469">
<td>CONF-0469</td>
<td>
<span style="color: grey;">•</span><a href="StructureDefinition-us-core-patient.html#CONF-0469">StructureDefinition-us-core-patient.html#profile-specific-implementation-guidance</a><br/>
</td>
<td style="text-align: center;">SHALL</td>
<td><div><p><a href="https://www.healthit.gov/topic/certification-ehrs/about-onc-health-it-certification-program">Certifying systems</a> [, those that are participating in the ONC Health IT certification program,] <strong>SHALL</strong>... follow the <a href="https://asapnet.org/wp-content/uploads/2022/03/Project_US_FINAL_Technical_Specification_Version_1.0.pdf">Project US@ Technical Specification for Patient Addresses Final Version 1.0</a> as the standard style guide for Patient.address.line and Patient.address.city for new and updated records.</p>
</div></td>
</tr>
<tr id="CONF-0482">
<td>CONF-0482</td>
<td>
<span style="color: grey;">•</span><a href="StructureDefinition-us-core-procedure.html#CONF-0482">StructureDefinition-us-core-procedure.html#profile-specific-implementation-guidance</a><br/>
</td>
<td style="text-align: center;">SHALL</td>
<td><div><p>[For organizations participating in the ONC Health IT Certification program] Servers … <strong>SHALL</strong> support ... US Core Procedure Profile for communicating the reason or justification for a referral as Additional USCDI Requirements</p>
</div></td>
</tr>
<tr id="CONF-0484">
<td>CONF-0484</td>
<td>
<span style="color: grey;">•</span><a href="StructureDefinition-us-core-procedure.html#CONF-0484">StructureDefinition-us-core-procedure.html#profile-specific-implementation-guidance</a><br/>
</td>
<td style="text-align: center;">SHALL</td>
<td><div><p>[For organizations participating in the ONC Health IT Certification program,] although both Procedure.reasonCode and Procedure.reasonReference are marked as Additional USCDI Requirements, the certifying Server system is not required to support both, but <strong>SHALL</strong> support at least one of these elements.</p>
</div></td>
</tr>
<tr id="CONF-0516">
<td>CONF-0516</td>
<td>
<span style="color: grey;">•</span><a href="StructureDefinition-us-core-servicerequest.html#CONF-0516">StructureDefinition-us-core-servicerequest.html#profile-specific-implementation-guidance</a><br/>
</td>
<td style="text-align: center;">SHALL</td>
<td><div><p>[For organizations participating in the ONC Health IT Certification program] Servers … <strong>SHALL</strong> support ... US Core Service Request Profile for communicating the reason or justification for a referral as Additional USCDI Requirements</p>
</div></td>
</tr>
<tr id="CONF-0518">
<td>CONF-0518</td>
<td>
<span style="color: grey;">•</span><a href="StructureDefinition-us-core-servicerequest.html#CONF-0518">StructureDefinition-us-core-servicerequest.html#profile-specific-implementation-guidance</a><br/>
</td>
<td style="text-align: center;">SHALL</td>
<td><div><p>[For organizations participating in the ONC Health IT Certification program,] although both ServiceRequest.reasonCode and ServiceRequest.reasonReference are marked as Additional USCDI Requirements, the certifying Server system is not required to support both, but <strong>SHALL</strong> support at least one of these elements.</p>
</div></td>
</tr>
<tr id="CONF-0520">
<td>CONF-0520</td>
<td>
<span style="color: grey;">•</span><a href="StructureDefinition-us-core-servicerequest.html#CONF-0520">StructureDefinition-us-core-servicerequest.html#profile-specific-implementation-guidance</a><br/>
</td>
<td style="text-align: center;">SHALL</td>
<td><div><p>[For organizations participating in the ONC Health IT Certification program,] when using ServiceRequest.reasonReference Servers <strong>SHALL</strong> support at least one target resource in ServiceRequest.reasonReference</p>
</div></td>
</tr>
<tr id="CONF-0522">
<td>CONF-0522</td>
<td>
<span style="color: grey;">•</span><a href="StructureDefinition-us-core-servicerequest.html#CONF-0522">StructureDefinition-us-core-servicerequest.html#profile-specific-implementation-guidance</a><br/>
</td>
<td style="text-align: center;">SHOULD</td>
<td><div><p>[For organizations participating in the ONC Health IT Certification program,] when using ServiceRequest.reasonReference …The referenced resources <strong>SHOULD</strong> be a US Core Profile as documented in <a href="https://hl7.org/fhir/us/core/STU8/general-guidance.html#referencing-us-core-profiles">Referencing US Core Profiles</a></p>
</div></td>
</tr>
<tr id="CONF-0801">
<td>CONF-0801</td>
<td>
<span style="color: grey;">•</span><a href="must-support.html#CONF-0801">must-support.html#defined-pattern-elements</a><br/>
</td>
<td style="text-align: center;">SHALL</td>
<td><div><p>If an element is marked as <em>Additional USCDI</em> and defined by a pattern [as described by <a href="http://hl7.org/fhir/R4/elementdefinition-definitions.html#ElementDefinition.pattern_x_">ElementDefinition.pattern</a>], then the pattern defines the elements <em>and</em> element values that the Certifying System <strong>SHALL</strong> be capable of providing.</p>
</div></td>
</tr>
<tr id="CONF-0802">
<td>CONF-0802</td>
<td>
<span style="color: grey;">•</span><a href="must-support.html#CONF-0802">must-support.html#must-support---primitive-elements</a><br/>
</td>
<td style="text-align: center;">SHALL</td>
<td><div><p>Primitive elements are single elements with a primitive value…. If they are marked as <em>Additional USCDI</em>, then the Certifying System <strong>SHALL</strong> be capable of providing the element value to meet the <em>Additional USCDI</em> requirement.</p>
</div></td>
</tr>
<tr id="CONF-0803">
<td>CONF-0803</td>
<td>
<span style="color: grey;">•</span><a href="must-support.html#CONF-0803">must-support.html#must-support---complex-elements</a><br/>
</td>
<td style="text-align: center;">SHALL</td>
<td><div><p>For any complex element marked as <em>Additional USCDI</em>, the Certifying System <strong>SHALL</strong> be capable of providing at least one of the sub-element values.</p>
</div></td>
</tr>
<tr id="CONF-0805">
<td>CONF-0805</td>
<td>
<span style="color: grey;">•</span><a href="must-support.html#CONF-0805">must-support.html#must-support---complex-elements</a><br/>
</td>
<td style="text-align: center;">SHALL</td>
<td><div><p>[I]f any sub-element is marked as <em>Additional USCDI</em> [for a complex element] and the parent element is not… [and] the parent element is represented in the structure, Certifying System <strong>SHALL</strong> support the sub-elements labeled as <em>Additional USCDI</em>.</p>
</div></td>
</tr>
<tr id="CONF-0809">
<td>CONF-0809</td>
<td>
<span style="color: grey;">•</span><a href="must-support.html#CONF-0809">must-support.html#must-support-targets-for-us-core-profiles</a><br/>
</td>
<td style="text-align: center;">SHALL</td>
<td><div><p>When a Reference type element is labeled as Additional USCDI and has a single target profile referenced, the target profile <strong>SHALL</strong> be supported for Certifying Systems.</p>
</div></td>
</tr>
<tr id="CONF-0811">
<td>CONF-0811</td>
<td>
<span style="color: grey;">•</span><a href="must-support.html#CONF-0811">must-support.html#must-support-targets-for-us-core-profiles</a><br/>
</td>
<td style="text-align: center;">SHALL</td>
<td><div><p>When a Reference type element labeled as Additional USCDI, has multiple target profiles referenced, and specific targets are labeled as Must Support, the Must Support target profile(s) <strong>SHALL</strong> be supported by Certifying Systems.</p>
</div></td>
</tr>
<tr id="CONF-0812">
<td>CONF-0812</td>
<td>
<span style="color: grey;">•</span><a href="must-support.html#CONF-0812">must-support.html#must-support---slices</a><br/>
</td>
<td style="text-align: center;">SHALL</td>
<td><div><p>[I]f a slice is labeled as ... Must Support/Additional USCDI and the slicer element is not labeled as ... Additional USCDI, then if the ... certifying system supports the element, it must support the slice's definition. There are no examples of this structure in US Core.</p>
</div></td>
</tr>
<tr id="CONF-0814">
<td>CONF-0814</td>
<td>
<span style="color: grey;">•</span><a href="must-support.html#CONF-0814">must-support.html#must-support---slices</a><br/>
</td>
<td style="text-align: center;">SHALL</td>
<td><div><p>[I]f a slice is labeled as … Must Support and the slicer element is ... labeled as … Must Support/Additional USCDI, then … certifying system [<strong>SHALL</strong> support] the element[ and] the slice's definition.</p>
</div></td>
</tr>
<tr id="CONF-0833">
<td>CONF-0833</td>
<td>
<span style="color: grey;">•</span><a href="StructureDefinition-us-core-condition-problems-health-concerns.html#CONF-0833">StructureDefinition-us-core-condition-problems-health-concerns.html#profile-specific-implementation-guidance</a><br/>
</td>
<td style="text-align: center;">SHALL</td>
<td><div><p>Certifying Systems <strong>SHALL</strong> support, a category of "sdoh"</p>
</div></td>
</tr>
<tr id="CONF-0834">
<td>CONF-0834</td>
<td>
<span style="color: grey;">•</span><a href="StructureDefinition-us-core-condition-problems-health-concerns.html#CONF-0834">StructureDefinition-us-core-condition-problems-health-concerns.html#profile-specific-implementation-guidance</a><br/>
</td>
<td style="text-align: center;">SHOULD</td>
<td><div><p>Certifying Systems ... <strong>SHOULD</strong> support the ... <a href="https://hl7.org/fhir/us/core/STU8/ValueSet-us-core-simple-observation-category.html">US Core Simple Observation Category</a> codes</p>
</div></td>
</tr>
<tr id="CONF-0835">
<td>CONF-0835</td>
<td>
<span style="color: grey;">•</span><a href="StructureDefinition-us-core-condition-problems-health-concerns.html#CONF-0835">StructureDefinition-us-core-condition-problems-health-concerns.html#profile-specific-implementation-guidance</a><br/>
</td>
<td style="text-align: center;">MAY</td>
<td><div><p>Certifying Systems ... <strong>MAY</strong> support other categories</p>
</div></td>
</tr>
<tr id="CONF-0846">
<td>CONF-0846</td>
<td>
<span style="color: grey;">•</span><a href="StructureDefinition-us-core-observation-screening-assessment.html#CONF-0846">StructureDefinition-us-core-observation-screening-assessment.html#profile-specific-implementation-guidance</a><br/>
</td>
<td style="text-align: center;">SHALL</td>
<td><div><p>[For the US Core Observation Screening Assessment Profile,] Certifying Systems <strong>SHALL</strong> support, the <a href="https://hl7.org/fhir/us/core/STU8/ValueSet-us-core-screening-assessment-observation-category.html">US Core Screening Assessment Observation Category</a> codes</p>
</div></td>
</tr>
<tr id="CONF-0847">
<td>CONF-0847</td>
<td>
<span style="color: grey;">•</span><a href="StructureDefinition-us-core-observation-screening-assessment.html#CONF-0847">StructureDefinition-us-core-observation-screening-assessment.html#profile-specific-implementation-guidance</a><br/>
</td>
<td style="text-align: center;">SHOULD</td>
<td><div><p>[For the US Core Observation Screening Assessment Profile,] Certifying Systems <strong>SHOULD</strong> support, the <a href="https://hl7.org/fhir/us/core/STU8/ValueSet-us-core-screening-assessment-observation-maximum-category.html">US Core Screening Assessment Observation Maximum Category</a> codes</p>
</div></td>
</tr>
<tr id="CONF-0848">
<td>CONF-0848</td>
<td>
<span style="color: grey;">•</span><a href="StructureDefinition-us-core-observation-screening-assessment.html#CONF-0848">StructureDefinition-us-core-observation-screening-assessment.html#profile-specific-implementation-guidance</a><br/>
</td>
<td style="text-align: center;">MAY</td>
<td><div><p>[For the US Core Observation Screening Assessment Profile,] Certifying Systems <strong>MAY</strong> support other codes.</p>
</div></td>
</tr>
<tr id="CONF-0852">
<td>CONF-0852</td>
<td>
<span style="color: grey;">•</span><a href="StructureDefinition-us-core-patient.html#CONF-0852">StructureDefinition-us-core-patient.html#profile-specific-implementation-guidance</a><br/>
</td>
<td style="text-align: center;">SHALL</td>
<td><div><p>Although the [<a href="https://hl7.org/fhir/us/core/STU8/StructureDefinition-us-core-interpreter-needed.html">US Core Interpreter Needed Extension</a>] is marked as an Additional USCDI Requirement on both US Core Patient and US Core Encounter Profiles, the certifying Server system is not required to support the extension on both profiles but <strong>SHALL</strong> support the extension on at least one.</p>
</div></td>
</tr>
<tr id="CONF-0861">
<td>CONF-0861</td>
<td>
<span style="color: grey;">•</span><a href="StructureDefinition-us-core-simple-observation.html#CONF-0861">StructureDefinition-us-core-simple-observation.html#profile-specific-implementation-guidance</a><br/>
</td>
<td style="text-align: center;">SHOULD</td>
<td><div><p>[For <a href="https://hl7.org/fhir/us/core/STU8/StructureDefinition-us-core-simple-observation.html">US Core Simple Observation Profile</a>, ]Certifying Systems ... <strong>SHOULD</strong> support the other <a href="https://hl7.org/fhir/us/core/STU8/ValueSet-us-core-simple-observation-category.html">US Core Simple Observation Category codes</a> [in addition to the <a href="https://hl7.org/fhir/us/core/STU8/ValueSet-us-core-screening-assessment-observation-category.html">US Core Screening Assessment Observation Category codes</a>]</p>
</div></td>
</tr>
<tr id="CONF-0862">
<td>CONF-0862</td>
<td>
<span style="color: grey;">•</span><a href="StructureDefinition-us-core-simple-observation.html#CONF-0862">StructureDefinition-us-core-simple-observation.html#profile-specific-implementation-guidance</a><br/>
</td>
<td style="text-align: center;">SHALL</td>
<td><div><p>[For <a href="https://hl7.org/fhir/us/core/STU8/StructureDefinition-us-core-simple-observation.html">US Core Simple Observation Profile</a>, ]Certifying Systems <strong>SHALL</strong> support, the <a href="https://hl7.org/fhir/us/core/STU8/ValueSet-us-core-screening-assessment-observation-category.html">US Core Screening Assessment Observation Category codes</a></p>
</div></td>
</tr>
<tr id="CONF-0863">
<td>CONF-0863</td>
<td>
<span style="color: grey;">•</span><a href="StructureDefinition-us-core-simple-observation.html#CONF-0863">StructureDefinition-us-core-simple-observation.html#profile-specific-implementation-guidance</a><br/>
</td>
<td style="text-align: center;">MAY</td>
<td><div><p>[For <a href="https://hl7.org/fhir/us/core/STU8/StructureDefinition-us-core-simple-observation.html">US Core Simple Observation Profile</a>, ]Certifying Systems ... <strong>MAY</strong> support other categories [in addition to <a href="https://hl7.org/fhir/us/core/STU8/ValueSet-us-core-screening-assessment-observation-category.html">US Core Screening Assessment Observation Category codes</a> and <a href="https://hl7.org/fhir/us/core/STU8/ValueSet-us-core-simple-observation-category.html">US Core Simple Observation Category codes</a>].</p>
</div></td>
</tr>
<tr id="CONF-0872">
<td>CONF-0872</td>
<td>
<span style="color: grey;">•</span><a href="must-support.html#CONF-0872">must-support.html#must-support---slices</a><br/>
</td>
<td style="text-align: center;">SHALL</td>
<td><div><p>[I]f a slice is labeled as Additional USCDI... and the slicer element is ... labeled as Must Support/Additional USCDI..., then ... the Certifying System... [<strong>SHALL</strong> support] the element[ and] the slice's definition.</p>
</div></td>
</tr>
<tr id="CONF-0883">
<td>CONF-0883</td>
<td>
<span style="color: grey;">•</span><a href="must-support.html#CONF-0883">must-support.html#must-support---resource-references</a><br/>
</td>
<td style="text-align: center;">SHALL</td>
<td><div><p>When a Reference element is labeled as <em>Additional USCDI</em> has multiple target profiles referenced, but none are labeled as <em>Must Support</em>, <em>at least one</em> target profile <strong>SHALL</strong> be supported by Certifying Systems.</p>
</div></td>
</tr>
<tr id="CONF-0884">
<td>CONF-0884</td>
<td>
<span style="color: grey;">•</span><a href="must-support.html#CONF-0884">must-support.html#must-support---choice-of-data-types</a><br/>
</td>
<td style="text-align: center;">SHALL</td>
<td><div><p>If an <em>Additional USCDI</em> element has a choice of datatypes for its content, the datatypes the Certifying System <strong>SHALL</strong> support are labeled as <em>Must Support</em>.</p>
</div></td>
</tr>
<tr id="CONF-0902">
<td>CONF-0902</td>
<td>
<span style="color: grey;">•</span><a href="StructureDefinition-us-core-location.html#CONF-0902">StructureDefinition-us-core-location.html#profile-specific-implementation-guidance</a><br/>
</td>
<td style="text-align: center;">MAY</td>
<td><div><p>Healthcare Service Location Codes (HSLOC) and SNOMED-CT Healthcare Facility Type value sets meet the USCDI applicable vocabulary standard for the Encounter Location Data Element. Certifying Systems <strong>MAY</strong> use a code from either vocabulary.</p>
</div></td>
</tr>
</tbody>
</table>
</div>
</text>
<extension
url="http://hl7.org/fhir/StructureDefinition/structuredefinition-wg">
<valueCode value="cgp"/>
</extension>
<extension
url="http://hl7.org/fhir/StructureDefinition/structuredefinition-fmm">
<valueInteger value="3">
<extension
url="http://hl7.org/fhir/StructureDefinition/structuredefinition-conformance-derivedFrom">
<valueCanonical
value="http://hl7.org/fhir/us/core/ImplementationGuide/hl7.fhir.us.core"/>
</extension>
</valueInteger>
</extension>
<extension
url="http://hl7.org/fhir/StructureDefinition/structuredefinition-standards-status">
<valueCode value="trial-use">
<extension
url="http://hl7.org/fhir/StructureDefinition/structuredefinition-conformance-derivedFrom">
<valueCanonical
value="http://hl7.org/fhir/us/core/ImplementationGuide/hl7.fhir.us.core"/>
</extension>
</valueCode>
</extension>
<url
value="http://hl7.org/fhir/us/core/Requirements/us-core-certifying-system"/>
<identifier>
<system value="urn:ietf:rfc:3986"/>
<value value="urn:oid:2.16.840.1.113883.4.642.40.2.36.1"/>
</identifier>
<version value="9.0.0"/>
<name value="USCoreCertifyingSystemRequirements"/>
<title value="US Core Certifying System Requirements"/>
<status value="draft"/>
<date value="2026-03-20T21:51:25+00:00"/>
<publisher value="HL7 International / Cross-Group Projects"/>
<contact>
<name value="HL7 International / Cross-Group Projects"/>
<telecom>
<system value="url"/>
<value value="http://www.hl7.org/Special/committees/cgp"/>
</telecom>
<telecom>
<system value="email"/>
<value value="cgp@lists.HL7.org"/>
</telecom>
</contact>
<description
value="This [Requirements](https://hl7.org/fhir/R5/requirements.html) resource lists the *additional requirements* for systems certifying for ASTP Health IT Certification (g(10) certification. These requirements represent the regulatory and technical specifications that design artifacts must meet to ensure interoperability. See the [US Core Server Requirements](Requirements-us-core-server.html) for the US Core Responder (Server) requirements defined in the US Core Implementation Guide narrative sections."/>
<jurisdiction>
<coding>
<system value="urn:iso:std:iso:3166"/>
<code value="US"/>
</coding>
</jurisdiction>
<copyright
value="Used by permission of HL7 International, all rights reserved Creative Commons License"/>
<actor>
<extension url="http://hl7.org/fhir/StructureDefinition/display">
<valueString value="US Core Certifying System"/>
</extension>
</actor>
<statement>
<key value="CONF-0011"/>
<conformance value="SHALL"/>
<requirement
value="A Server that certifies to the [21st Century Cures Act for accessing patient data](https://www.federalregister.gov/d/2020-07419/p-1177) **SHALL** implement all components in the USCDI [[USCDI link](https://www.healthit.gov/isp/united-states-core-data-interoperability-uscdi)]"/>
<reference
value="general-requirements.html#profile-support--interaction-support">
<extension url="http://hl7.org/fhir/StructureDefinition/narrativeLink">
<valueUrl value="general-requirements.html#CONF-0011"/>
</extension>
</reference>
</statement>
<statement>
<key value="CONF-0012"/>
<conformance value="SHALL"/>
<requirement
value="A Server that certifies to the [21st Century Cures Act for accessing patient data](https://www.federalregister.gov/d/2020-07419/p-1177) **SHALL** implement all components in the ... the US Core CapabilityStatement [[Definition](https://hl7.org/fhir/us/core/CapabilityStatement-us-core-Server.html)] ."/>
<reference
value="general-requirements.html#profile-support--interaction-support">
<extension url="http://hl7.org/fhir/StructureDefinition/narrativeLink">
<valueUrl value="general-requirements.html#CONF-0012"/>
</extension>
</reference>
</statement>
<statement>
<key value="CONF-0124"/>
<conformance value="SHALL"/>
<conditionality value="true"/>
<requirement
value="Implementations meeting US EHR certification [of the ONC IT Health Certification program] requirements must support all US Core’s required scopes."/>
<reference value="scopes.html#smart-scopes">
<extension url="http://hl7.org/fhir/StructureDefinition/narrativeLink">
<valueUrl value="scopes.html#CONF-0124"/>
</extension>
</reference>
</statement>
<statement>
<key value="CONF-0391"/>
<conformance value="SHALL"/>
<conditionality value="true"/>
<requirement
value="[For organization participating in the ONC Health IT Certification program] [CVX vaccine codes](https://www2a.cdc.gov/vaccines/iis/iisstandards/ndc_crosswalk.asp) are required"/>
<reference
value="StructureDefinition-us-core-immunization.html#profile-specific-implementation-guidance">
<extension url="http://hl7.org/fhir/StructureDefinition/narrativeLink">
<valueUrl
value="StructureDefinition-us-core-immunization.html#CONF-0391"/>
</extension>
</reference>
</statement>
<statement>
<key value="CONF-0392"/>
<conformance value="SHOULD"/>
<requirement
value="[NDC vaccine codes](http://www2a.cdc.gov/vaccines/iis/iisstandards/ndc_crosswalk.asp) **SHOULD** be supported as an additional code [of [CVX Vaccine Codes](https://www2a.cdc.gov/vaccines/iis/iisstandards/ndc_crosswalk.asp)]"/>
<reference
value="StructureDefinition-us-core-immunization.html#profile-specific-implementation-guidance">
<extension url="http://hl7.org/fhir/StructureDefinition/narrativeLink">
<valueUrl
value="StructureDefinition-us-core-immunization.html#CONF-0392"/>
</extension>
</reference>
</statement>
<statement>
<key value="CONF-0405"/>
<conformance value="SHALL"/>
<conditionality value="true"/>
<requirement
value="[For organization participating in the ONC Health IT Certification program Servers **SHALL** support the [additional USCDI requirement](https://hl7.org/fhir/us/core/STU8/must-support.html#additional-uscdi-requirements):], The reason or indication for the prescription"/>
<reference
value="StructureDefinition-us-core-medicationrequest.html#profile-specific-implementation-guidance">
<extension url="http://hl7.org/fhir/StructureDefinition/narrativeLink">
<valueUrl
value="StructureDefinition-us-core-medicationrequest.html#CONF-0405"/>
</extension>
</reference>
</statement>
<statement>
<key value="CONF-0406"/>
<conformance value="SHALL"/>
<conditionality value="true"/>
<requirement
value="[For organization participating in the ONC Health IT Certification program Servers **SHALL** support the [additional USCDI requirement](https://hl7.org/fhir/us/core/STU8/must-support.html#additional-uscdi-requirements):] reported adherence to prescribed medication instructions"/>
<reference
value="StructureDefinition-us-core-medicationrequest.html#profile-specific-implementation-guidance">
<extension url="http://hl7.org/fhir/StructureDefinition/narrativeLink">
<valueUrl
value="StructureDefinition-us-core-medicationrequest.html#CONF-0406"/>
</extension>
</reference>
</statement>
<statement>
<key value="CONF-0411"/>
<conformance value="SHALL"/>
<conditionality value="true"/>
<requirement
value="Although both MedicationRequest.reasonCode and MedicationRequest.reasonReference are marked as Additional USCDI Requirements [which are required for organizations participating in the ONC Health IT Certification program]. The certifying Server system is not required to support both, but **SHALL** support at least one of these elements"/>
<reference
value="StructureDefinition-us-core-medicationrequest.html#profile-specific-implementation-guidance">
<extension url="http://hl7.org/fhir/StructureDefinition/narrativeLink">
<valueUrl
value="StructureDefinition-us-core-medicationrequest.html#CONF-0411"/>
</extension>
</reference>
</statement>
<statement>
<key value="CONF-0414"/>
<conformance value="SHALL"/>
<conditionality value="true"/>
<requirement
value="[For organizations participating in the ONC Health IT Certification program and supporting MedicationRequest.reasonReference,] Servers **SHALL** support at least one target resource in MedicationRequest.reasonReference"/>
<reference
value="StructureDefinition-us-core-medicationrequest.html#profile-specific-implementation-guidance">
<extension url="http://hl7.org/fhir/StructureDefinition/narrativeLink">
<valueUrl
value="StructureDefinition-us-core-medicationrequest.html#CONF-0414"/>
</extension>
</reference>
</statement>
<statement>
<key value="CONF-0444"/>
<conformance value="SHALL"/>
<conditionality value="true"/>
<requirement
value="Although none of the Observation.derivedFrom [references are flagged as Must Support](https://hl7.org/fhir/us/core/STU8/must-support.html#must-support---resource-references), the Certifying System *SHALL** support at least one of them"/>
<reference
value="StructureDefinition-us-core-simple-observation.html#profile-specific-implementation-guidance">
<extension url="http://hl7.org/fhir/StructureDefinition/narrativeLink">
<valueUrl
value="StructureDefinition-us-core-simple-observation.html#CONF-0444"/>
</extension>
</reference>
</statement>
<statement>
<key value="CONF-0465"/>
<conformance value="SHALL"/>
<requirement
value="Although Patient.deceased[x] is marked as additional USCDI, certifying systems are not required to support both [boolean and dateTime data types], but **SHALL** support [at] least Patient.deceasedDateTime"/>
<reference
value="StructureDefinition-us-core-patient.html#profile-specific-implementation-guidance">
<extension url="http://hl7.org/fhir/StructureDefinition/narrativeLink">
<valueUrl value="StructureDefinition-us-core-patient.html#CONF-0465"/>
</extension>
</reference>
</statement>
<statement>
<key value="CONF-0469"/>
<conformance value="SHALL"/>
<requirement
value="[Certifying systems](https://www.healthit.gov/topic/certification-ehrs/about-onc-health-it-certification-program) [, those that are participating in the ONC Health IT certification program,] **SHALL**... follow the [Project US@ Technical Specification for Patient Addresses Final Version 1.0](https://asapnet.org/wp-content/uploads/2022/03/Project_US_FINAL_Technical_Specification_Version_1.0.pdf) as the standard style guide for Patient.address.line and Patient.address.city for new and updated records."/>
<reference
value="StructureDefinition-us-core-patient.html#profile-specific-implementation-guidance">
<extension url="http://hl7.org/fhir/StructureDefinition/narrativeLink">
<valueUrl value="StructureDefinition-us-core-patient.html#CONF-0469"/>
</extension>
</reference>
</statement>
<statement>
<key value="CONF-0482"/>
<conformance value="SHALL"/>
<conditionality value="true"/>
<requirement
value="[For organizations participating in the ONC Health IT Certification program] Servers … **SHALL** support ... US Core Procedure Profile for communicating the reason or justification for a referral as Additional USCDI Requirements"/>
<reference
value="StructureDefinition-us-core-procedure.html#profile-specific-implementation-guidance">
<extension url="http://hl7.org/fhir/StructureDefinition/narrativeLink">
<valueUrl
value="StructureDefinition-us-core-procedure.html#CONF-0482"/>
</extension>
</reference>
</statement>
<statement>
<key value="CONF-0484"/>
<conformance value="SHALL"/>
<conditionality value="true"/>
<requirement
value="[For organizations participating in the ONC Health IT Certification program,] although both Procedure.reasonCode and Procedure.reasonReference are marked as Additional USCDI Requirements, the certifying Server system is not required to support both, but **SHALL** support at least one of these elements."/>
<reference
value="StructureDefinition-us-core-procedure.html#profile-specific-implementation-guidance">
<extension url="http://hl7.org/fhir/StructureDefinition/narrativeLink">
<valueUrl
value="StructureDefinition-us-core-procedure.html#CONF-0484"/>
</extension>
</reference>
</statement>
<statement>
<key value="CONF-0516"/>
<conformance value="SHALL"/>
<conditionality value="true"/>
<requirement
value="[For organizations participating in the ONC Health IT Certification program] Servers … **SHALL** support ... US Core Service Request Profile for communicating the reason or justification for a referral as Additional USCDI Requirements"/>
<reference
value="StructureDefinition-us-core-servicerequest.html#profile-specific-implementation-guidance">
<extension url="http://hl7.org/fhir/StructureDefinition/narrativeLink">
<valueUrl
value="StructureDefinition-us-core-servicerequest.html#CONF-0516"/>
</extension>
</reference>
</statement>
<statement>
<key value="CONF-0518"/>
<conformance value="SHALL"/>
<conditionality value="true"/>
<requirement
value="[For organizations participating in the ONC Health IT Certification program,] although both ServiceRequest.reasonCode and ServiceRequest.reasonReference are marked as Additional USCDI Requirements, the certifying Server system is not required to support both, but **SHALL** support at least one of these elements."/>
<reference
value="StructureDefinition-us-core-servicerequest.html#profile-specific-implementation-guidance">
<extension url="http://hl7.org/fhir/StructureDefinition/narrativeLink">
<valueUrl
value="StructureDefinition-us-core-servicerequest.html#CONF-0518"/>
</extension>
</reference>
</statement>
<statement>
<key value="CONF-0520"/>
<conformance value="SHALL"/>
<conditionality value="true"/>
<requirement
value="[For organizations participating in the ONC Health IT Certification program,] when using ServiceRequest.reasonReference Servers **SHALL** support at least one target resource in ServiceRequest.reasonReference"/>
<reference
value="StructureDefinition-us-core-servicerequest.html#profile-specific-implementation-guidance">
<extension url="http://hl7.org/fhir/StructureDefinition/narrativeLink">
<valueUrl
value="StructureDefinition-us-core-servicerequest.html#CONF-0520"/>
</extension>
</reference>
</statement>
<statement>
<key value="CONF-0522"/>
<conformance value="SHOULD"/>
<conditionality value="true"/>
<requirement
value="[For organizations participating in the ONC Health IT Certification program,] when using ServiceRequest.reasonReference …The referenced resources **SHOULD** be a US Core Profile as documented in [Referencing US Core Profiles](https://hl7.org/fhir/us/core/STU8/general-guidance.html#referencing-us-core-profiles)"/>
<reference
value="StructureDefinition-us-core-servicerequest.html#profile-specific-implementation-guidance">
<extension url="http://hl7.org/fhir/StructureDefinition/narrativeLink">
<valueUrl
value="StructureDefinition-us-core-servicerequest.html#CONF-0522"/>
</extension>
</reference>
</statement>
<statement>
<key value="CONF-0801"/>
<conformance value="SHALL"/>
<conditionality value="true"/>
<requirement
value="If an element is marked as *Additional USCDI* and defined by a pattern [as described by [ElementDefinition.pattern](http://hl7.org/fhir/R4/elementdefinition-definitions.html#ElementDefinition.pattern_x_)], then the pattern defines the elements *and* element values that the Certifying System **SHALL** be capable of providing."/>
<reference value="must-support.html#defined-pattern-elements">
<extension url="http://hl7.org/fhir/StructureDefinition/narrativeLink">
<valueUrl value="must-support.html#CONF-0801"/>
</extension>
</reference>
</statement>
<statement>
<key value="CONF-0802"/>
<conformance value="SHALL"/>
<conditionality value="true"/>
<requirement
value="
Primitive elements are single elements with a primitive value…. If they are marked as *Additional USCDI*, then the Certifying System **SHALL** be capable of providing the element value to meet the *Additional USCDI* requirement."/>
<reference value="must-support.html#must-support---primitive-elements">
<extension url="http://hl7.org/fhir/StructureDefinition/narrativeLink">
<valueUrl value="must-support.html#CONF-0802"/>
</extension>
</reference>
</statement>
<statement>
<key value="CONF-0803"/>
<conformance value="SHALL"/>
<requirement
value="For any complex element marked as *Additional USCDI*, the Certifying System **SHALL** be capable of providing at least one of the sub-element values. "/>
<reference value="must-support.html#must-support---complex-elements">
<extension url="http://hl7.org/fhir/StructureDefinition/narrativeLink">
<valueUrl value="must-support.html#CONF-0803"/>
</extension>
</reference>
</statement>
<statement>
<key value="CONF-0805"/>
<conformance value="SHALL"/>
<requirement
value="[I]f any sub-element is marked as *Additional USCDI* [for a complex element] and the parent element is not… [and] the parent element is represented in the structure, Certifying System **SHALL** support the sub-elements labeled as *Additional USCDI*."/>
<reference value="must-support.html#must-support---complex-elements">
<extension url="http://hl7.org/fhir/StructureDefinition/narrativeLink">
<valueUrl value="must-support.html#CONF-0805"/>
</extension>
</reference>
</statement>
<statement>
<key value="CONF-0809"/>
<conformance value="SHALL"/>
<conditionality value="true"/>
<requirement
value="When a Reference type element is labeled as Additional USCDI and has a single target profile referenced, the target profile **SHALL** be supported for Certifying Systems."/>
<reference
value="must-support.html#must-support-targets-for-us-core-profiles">
<extension url="http://hl7.org/fhir/StructureDefinition/narrativeLink">
<valueUrl value="must-support.html#CONF-0809"/>
</extension>
</reference>
</statement>
<statement>
<key value="CONF-0811"/>
<conformance value="SHALL"/>
<conditionality value="true"/>
<requirement
value="When a Reference type element labeled as Additional USCDI, has multiple target profiles referenced, and specific targets are labeled as Must Support, the Must Support target profile(s) **SHALL** be supported by Certifying Systems."/>
<reference
value="must-support.html#must-support-targets-for-us-core-profiles">
<extension url="http://hl7.org/fhir/StructureDefinition/narrativeLink">
<valueUrl value="must-support.html#CONF-0811"/>
</extension>
</reference>
</statement>
<statement>
<key value="CONF-0812"/>
<conformance value="SHALL"/>
<conditionality value="true"/>
<requirement
value="[I]f a slice is labeled as ... Must Support/Additional USCDI and the slicer element is not labeled as ... Additional USCDI, then if the ... certifying system supports the element, it must support the slice's definition. There are no examples of this structure in US Core."/>
<reference value="must-support.html#must-support---slices">
<extension url="http://hl7.org/fhir/StructureDefinition/narrativeLink">
<valueUrl value="must-support.html#CONF-0812"/>
</extension>
</reference>
</statement>
<statement>
<key value="CONF-0814"/>
<conformance value="SHALL"/>
<conditionality value="true"/>
<requirement
value="[I]f a slice is labeled as … Must Support and the slicer element is ... labeled as … Must Support/Additional USCDI, then … certifying system [**SHALL** support] the element[ and] the slice's definition."/>
<reference value="must-support.html#must-support---slices">
<extension url="http://hl7.org/fhir/StructureDefinition/narrativeLink">
<valueUrl value="must-support.html#CONF-0814"/>
</extension>
</reference>
</statement>
<statement>
<key value="CONF-0833"/>
<conformance value="SHALL"/>
<conditionality value="true"/>
<requirement
value="Certifying Systems **SHALL** support, a category of "sdoh""/>
<reference
value="StructureDefinition-us-core-condition-problems-health-concerns.html#profile-specific-implementation-guidance">
<extension url="http://hl7.org/fhir/StructureDefinition/narrativeLink">
<valueUrl
value="StructureDefinition-us-core-condition-problems-health-concerns.html#CONF-0833"/>
</extension>
</reference>
</statement>
<statement>
<key value="CONF-0834"/>
<conformance value="SHOULD"/>
<requirement
value="Certifying Systems ... **SHOULD** support the ... [US Core Simple Observation Category](https://hl7.org/fhir/us/core/STU8/ValueSet-us-core-simple-observation-category.html) codes"/>
<reference
value="StructureDefinition-us-core-condition-problems-health-concerns.html#profile-specific-implementation-guidance">
<extension url="http://hl7.org/fhir/StructureDefinition/narrativeLink">
<valueUrl
value="StructureDefinition-us-core-condition-problems-health-concerns.html#CONF-0834"/>
</extension>
</reference>
</statement>
<statement>
<key value="CONF-0835"/>
<conformance value="MAY"/>
<requirement
value="Certifying Systems ... **MAY** support other categories"/>
<reference
value="StructureDefinition-us-core-condition-problems-health-concerns.html#profile-specific-implementation-guidance">
<extension url="http://hl7.org/fhir/StructureDefinition/narrativeLink">
<valueUrl
value="StructureDefinition-us-core-condition-problems-health-concerns.html#CONF-0835"/>
</extension>
</reference>
</statement>
<statement>
<key value="CONF-0846"/>
<conformance value="SHALL"/>
<conditionality value="true"/>
<requirement
value="[For the US Core Observation Screening Assessment Profile,] Certifying Systems **SHALL** support, the [US Core Screening Assessment Observation Category](https://hl7.org/fhir/us/core/STU8/ValueSet-us-core-screening-assessment-observation-category.html) codes"/>
<reference
value="StructureDefinition-us-core-observation-screening-assessment.html#profile-specific-implementation-guidance">
<extension url="http://hl7.org/fhir/StructureDefinition/narrativeLink">
<valueUrl
value="StructureDefinition-us-core-observation-screening-assessment.html#CONF-0846"/>
</extension>
</reference>
</statement>
<statement>
<key value="CONF-0847"/>
<conformance value="SHOULD"/>
<requirement
value="[For the US Core Observation Screening Assessment Profile,] Certifying Systems **SHOULD** support, the [US Core Screening Assessment Observation Maximum Category](https://hl7.org/fhir/us/core/STU8/ValueSet-us-core-screening-assessment-observation-maximum-category.html) codes"/>
<reference
value="StructureDefinition-us-core-observation-screening-assessment.html#profile-specific-implementation-guidance">
<extension url="http://hl7.org/fhir/StructureDefinition/narrativeLink">
<valueUrl
value="StructureDefinition-us-core-observation-screening-assessment.html#CONF-0847"/>
</extension>
</reference>
</statement>
<statement>
<key value="CONF-0848"/>
<conformance value="MAY"/>
<requirement
value="[For the US Core Observation Screening Assessment Profile,] Certifying Systems **MAY** support other codes."/>
<reference
value="StructureDefinition-us-core-observation-screening-assessment.html#profile-specific-implementation-guidance">
<extension url="http://hl7.org/fhir/StructureDefinition/narrativeLink">
<valueUrl
value="StructureDefinition-us-core-observation-screening-assessment.html#CONF-0848"/>
</extension>
</reference>
</statement>
<statement>
<key value="CONF-0852"/>
<conformance value="SHALL"/>
<conditionality value="true"/>
<requirement
value="Although the [[US Core Interpreter Needed Extension](https://hl7.org/fhir/us/core/STU8/StructureDefinition-us-core-interpreter-needed.html)] is marked as an Additional USCDI Requirement on both US Core Patient and US Core Encounter Profiles, the certifying Server system is not required to support the extension on both profiles but **SHALL** support the extension on at least one."/>
<reference
value="StructureDefinition-us-core-patient.html#profile-specific-implementation-guidance">
<extension url="http://hl7.org/fhir/StructureDefinition/narrativeLink">
<valueUrl value="StructureDefinition-us-core-patient.html#CONF-0852"/>
</extension>
</reference>
</statement>
<statement>
<key value="CONF-0861"/>
<conformance value="SHOULD"/>
<conditionality value="true"/>
<requirement
value="[For [US Core Simple Observation Profile](https://hl7.org/fhir/us/core/STU8/StructureDefinition-us-core-simple-observation.html), ]Certifying Systems ... **SHOULD** support the other [US Core Simple Observation Category codes](https://hl7.org/fhir/us/core/STU8/ValueSet-us-core-simple-observation-category.html) [in addition to the [US Core Screening Assessment Observation Category codes](https://hl7.org/fhir/us/core/STU8/ValueSet-us-core-screening-assessment-observation-category.html)]"/>
<reference
value="StructureDefinition-us-core-simple-observation.html#profile-specific-implementation-guidance">
<extension url="http://hl7.org/fhir/StructureDefinition/narrativeLink">
<valueUrl
value="StructureDefinition-us-core-simple-observation.html#CONF-0861"/>
</extension>
</reference>
</statement>
<statement>
<key value="CONF-0862"/>
<conformance value="SHALL"/>
<conditionality value="true"/>
<requirement
value="[For [US Core Simple Observation Profile](https://hl7.org/fhir/us/core/STU8/StructureDefinition-us-core-simple-observation.html), ]Certifying Systems **SHALL** support, the [US Core Screening Assessment Observation Category codes](https://hl7.org/fhir/us/core/STU8/ValueSet-us-core-screening-assessment-observation-category.html)"/>
<reference
value="StructureDefinition-us-core-simple-observation.html#profile-specific-implementation-guidance">
<extension url="http://hl7.org/fhir/StructureDefinition/narrativeLink">
<valueUrl
value="StructureDefinition-us-core-simple-observation.html#CONF-0862"/>
</extension>
</reference>
</statement>
<statement>
<key value="CONF-0863"/>
<conformance value="MAY"/>
<conditionality value="true"/>
<requirement
value="[For [US Core Simple Observation Profile](https://hl7.org/fhir/us/core/STU8/StructureDefinition-us-core-simple-observation.html), ]Certifying Systems ... **MAY** support other categories [in addition to [US Core Screening Assessment Observation Category codes](https://hl7.org/fhir/us/core/STU8/ValueSet-us-core-screening-assessment-observation-category.html) and [US Core Simple Observation Category codes](https://hl7.org/fhir/us/core/STU8/ValueSet-us-core-simple-observation-category.html)]."/>
<reference
value="StructureDefinition-us-core-simple-observation.html#profile-specific-implementation-guidance">
<extension url="http://hl7.org/fhir/StructureDefinition/narrativeLink">
<valueUrl
value="StructureDefinition-us-core-simple-observation.html#CONF-0863"/>
</extension>
</reference>
</statement>
<statement>
<key value="CONF-0872"/>
<conformance value="SHALL"/>
<conditionality value="true"/>
<requirement
value="[I]f a slice is labeled as Additional USCDI... and the slicer element is ... labeled as Must Support/Additional USCDI..., then ... the Certifying System... [**SHALL** support] the element[ and] the slice's definition."/>
<reference value="must-support.html#must-support---slices">
<extension url="http://hl7.org/fhir/StructureDefinition/narrativeLink">
<valueUrl value="must-support.html#CONF-0872"/>
</extension>
</reference>
</statement>
<statement>
<key value="CONF-0883"/>
<conformance value="SHALL"/>
<requirement
value="When a Reference element is labeled as *Additional USCDI* has multiple target profiles referenced, but none are labeled as *Must Support*, *at least one* target profile **SHALL** be supported by Certifying Systems."/>
<reference value="must-support.html#must-support---resource-references">
<extension url="http://hl7.org/fhir/StructureDefinition/narrativeLink">
<valueUrl value="must-support.html#CONF-0883"/>
</extension>
</reference>
</statement>
<statement>
<key value="CONF-0884"/>
<conformance value="SHALL"/>
<requirement
value="If an *Additional USCDI* element has a choice of datatypes for its content, the datatypes the Certifying System **SHALL** support are labeled as *Must Support*."/>
<reference value="must-support.html#must-support---choice-of-data-types">
<extension url="http://hl7.org/fhir/StructureDefinition/narrativeLink">
<valueUrl value="must-support.html#CONF-0884"/>
</extension>
</reference>
</statement>
<statement>
<key value="CONF-0902"/>
<conformance value="MAY"/>
<requirement
value="Healthcare Service Location Codes (HSLOC) and SNOMED-CT Healthcare Facility Type value sets meet the USCDI applicable vocabulary standard for the Encounter Location Data Element. Certifying Systems **MAY** use a code from either vocabulary."/>
<reference
value="StructureDefinition-us-core-location.html#profile-specific-implementation-guidance">
<extension url="http://hl7.org/fhir/StructureDefinition/narrativeLink">
<valueUrl
value="StructureDefinition-us-core-location.html#CONF-0902"/>
</extension>
</reference>
</statement>
</Requirements>
IG © 2026+ HL7 International / Cross-Group Projects. Package hl7.fhir.us.core#9.0.0 based on FHIR 4.0.1. Generated 2026-03-20
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