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Type:
Change Request
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Resolution: Persuasive
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Priority:
Medium
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FHIR Core (FHIR)
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STU3
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FHIR Infrastructure
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Search Parameter Registry
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Josh Mandel / Eric Haas: 6-0-0
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Enhancement
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Compatible, substantive
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STU3
_filter is currently not defined in the Search Parameter Registry. Moreover, no SearchParameter resource is provided for it in the FHIR Definitions .zip. Due to not having a definition URL for this SearchParemter, it is not possible to unambiguously include it in a CapabilityStatement and check for its availability.
The FHIR specification should add a SearchParameter resource for _filter.