This page is part of the Making EHR Data MOre available for Research and Public Health (MedMorph) (v0.2.0: STU 1 Draft) based on FHIR R4. . For a full list of available versions, see the Directory of published versions

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Extension: US Public Health FHIR Query Pattern Extension

Supports communicating the FHIR query for a given data requirement. The query is server-specific, and will need to be created as informed by a CapabilityStatement. The $data-requirements operation should be extended to be able to provide an Endpoint or CapabilityStatement to provide this information. If no endpoint or capability statement is provided, the capability statement of the server performing the operation is used. This is not a resolveable URL, and that it will contain 1) No base canonical (so it’s a relative query), and 2) Parameters using tokens that are denoted using double-braces and the context parameters are dependent solely on the subjectType, according to the following: Patient: context.patientId, Practitioner: context.practitionerId, Organization: context.organizationId, Location: context.locationId, Device: context.deviceId

The official URL for this extension is:

http://hl7.org/fhir/us/medmorph/StructureDefinition/us-ph-fhirquerypattern-extension

Status: draft
Extension maintained by: HL7 International - Public Health Work Group

Context of Use

This extension may be used on the following element(s):

• PlanDefinition.repeat(action).input

Usage info

Usage:

• Examples for this Extension: PlanDefinitionCancerExample

Formal Views of Extension Content

Description of Profiles, Differentials, Snapshots, and how the XML and JSON presentations work.

 

Other representations of profile: CSV, Excel, Schematron

Constraints

Id	Path	Details	Requirements
ele-1	Extension	All FHIR elements must have a @value or children : hasValue() or (children().count() > id.count())
ext-1	Extension	Must have either extensions or value[x], not both : extension.exists() != value.exists()
ele-1	Extension.extension	All FHIR elements must have a @value or children : hasValue() or (children().count() > id.count())
ext-1	Extension.extension	Must have either extensions or value[x], not both : extension.exists() != value.exists()
ele-1	Extension.value[x]	All FHIR elements must have a @value or children : hasValue() or (children().count() > id.count())