resource-slicing-rules — CodeSystems — Extensions for Using Data Elements from FHIR R5 in FHIR R4 — FHIR IG

SlicingRules

activeExtensions for Using Data Elements from FHIR R5 in FHIR R40.1.0complete3 concepts

How slices are interpreted when evaluating an instance.

Metadata

Code	Display	Definition
`closed`	Closed	No additional content is allowed other than that described by the slices in this profile.
`open`	Open	Additional content is allowed anywhere in the list.
`openAtEnd`	Open at End	Additional content is allowed, but only at the end of the list. Note that using this requires that the slices be ordered, which makes it hard to share uses. This should only be done where absolutely required.