_text | string | Search on the narrative of the resource | |
_content | string | Search on the entire content of the resource | |
_filter | token | Filter search parameter which supports a more sophisticated grammar for searching. See documentation for further details | |
_has | string | Provides limited support for reverse chaining - that is, selecting resources based on the properties of resources that refer to them (instead of chaining where resources can be selected based on the properties of resources that they refer to). See the FHIR search page for further documentation | |
_id | token | Logical id of this artifact | Resource.id |
_lastUpdated | date | When the resource version last changed | Resource.meta.lastUpdated |
_list | string | All resources in nominated list (by id, Type/id, url or one of the magic List types) | |
_profile | uri | Profiles this resource claims to conform to | Resource.meta.profile |
_query | token | A custom search profile that describes a specific defined query operation | |
_security | token | Security Labels applied to this resource | Resource.meta.security |
_source | uri | Identifies where the resource comes from | Resource.meta.source |
_tag | token | Tags applied to this resource | Resource.meta.tag |
_text | string | Search on the narrative text (html) of the resource | |
_type | token | Used when a search is performed in a context which doesn't limit the search to indicate which types are being searched. See the FHIR search page for further discussion | |