[R4][Encounter] encounter.Class update

content/millennium/r4/base/management/encounter.md

@@ -91,6 +91,7 @@ _Implementation Notes_
 * The [Encounter.hospitalization.destination] will be returned as a reference to a [contained] location resource.
 * The [Encounter.location.location] may be returned as a reference to a [contained] location resource.
 * A populated Encounter response bundle will not have any guaranteed sort order within the page.  However, if the results are split into multiple pages, the pages will be sorted by the start of the [Encounter.period] from oldest to newest.  That is, all encounters on a page will have an older [Encounter.period] start date than all the encounters on the next page.
+* The [Encounter.class] filed will first return any mapped v3 code; if no v3 code is found, a v2 code (or other code) will be returned.
 
 ### Authorization Types
 
@@ -194,6 +195,7 @@ _Implementation Notes_
 
 * The [Encounter.hospitalization.destination] will be returned as a reference to a [contained] location resource.
 * The [Encounter.location.location] may be returned as a reference to a [contained] location resource.
+* The [Encounter.class] filed will first return any mapped v3 code; if no v3 code is found, a v2 code (or other code) will be returned.
 
 ### Authorization Types
 
@@ -361,6 +363,7 @@ The common [errors] and [OperationOutcomes] may be returned.
 [Client Organization]: #custom-extensions
 [Custom Attribute]: #custom-extensions
 [contained]: https://hl7.org/fhir/r4/references.html#contained
+[Encounter.class]: https://hl7.org/fhir/r4/encounter-definitions.html#Encounter.class
 [Encounter.hospitalization.destination]: https://hl7.org/fhir/r4/encounter-definitions.html#Encounter.hospitalization.destination
 [Encounter.location.location]: https://hl7.org/fhir/r4/encounter-definitions.html#Encounter.location.location
 [Encounter.period]: https://hl7.org/fhir/r4/encounter-definitions.html#Encounter.period