Name	Flags	Card.	Type	Description & Constraints
SearchParameter	I		DomainResource	Search Parameter for a resource If an xpath is present, there SHALL be an xpathUsage
url	Σ	1..1	uri	Absolute URL used to reference this search parameter
name	Σ	1..1	string	Informal name for this search parameter
status	?! Σ	0..1	code	draft | active | retired ConformanceResourceStatus ( Required)
experimental	Σ	0..1	boolean	If for testing purposes, not real usage
publisher	Σ	0..1	string	Name of the publisher (Organization or individual)
contact	Σ	0..*	BackboneElement	Contact details of the publisher
name	Σ	0..1	string	Name of a individual to contact
telecom	Σ	0..*	ContactPoint	Contact details for individual or publisher
date	Σ	0..1	dateTime	Publication Date(/time)
requirements		0..1	string	Why this search parameter is defined
code	Σ	1..1	code	Code used in URL
base	Σ	1..1	code	The resource type this search parameter applies to ResourceType ( Required)
type	Σ	1..1	code	number | date | string | token | reference | composite | quantity | uri SearchParamType ( Required)
description	Σ	1..1	string	Documentation for search parameter
xpath	I	0..1	string	XPath that extracts the values
xpathUsage	I	0..1	code	normal | phonetic | nearby | distance | other XPathUsageType ( Required)
target		0..*	code	Types of resource (if a resource reference) ResourceType ( Required)
Documentation for this format