Criteria Relative Date Extension

Canonical	../StructureDefinition/criteria-relative-date
Status	draft · 1.26.0
Base	Extension (constraint)
Context	Library (element)
Source	FSH · JSON

Whether this module definition's membership can change through the passage of time alone. True means the criteria are anchored to a moving reference point ("no visit in the last six months"), so membership goes stale without any write and a periodic re-evaluation is required. False means membership can only change when data changes, so a change feed is sufficient. Derived from the criteria logic, not declared beside it.

Invariants

Every rule in force on a conforming instance. This profile rows are stated here; inherited rows come from the base resource and are listed so that a constraint named on an element is findable. Invariant keys elsewhere on this page link into this table.

Key	Source	Severity	On	Rule
ele-1	inherited	error	Extension	All FHIR elements must have a @value or children hasValue() or (children().count() > id.count())
ext-1	inherited	error	Extension	Must have either extensions or value[x], not both extension.exists() != value.exists()