A List is a curated collection of resources, for things such as problem lists, allergy lists, facility list, organization list, etc.

List
identifier
Business identifier
status
current | retired | entered-in-error
mode
working | snapshot | changes
title
Descriptive name for the list
code
What the purpose of this list is
subject
If all resources have the same subject(s)
encounter
Context in which list created
date
When the list was prepared
source
Who and/or what defined the list contents (aka Author)
orderedBy
What order the list has
note
Comments about the list
entry
Entries in the list
flag
Status/Workflow information about this item
deleted
If this item is actually marked as deleted
date
When item added to list
item
Actual entry
emptyReason
Why list is empty