This is the Continuous Integration Build of FHIR (will be incorrect/inconsistent at times).
See the Directory of published versions 
8.23.8 Resource Communication - Mappings
Mappings for the Communication resource (see Mappings to Other Standards for further information & status).
| Communication |
workflow.encounter |
| identifier |
FiveWs.identifier |
| status |
FiveWs.status |
| category |
FiveWs.class |
| priority |
FiveWs.grade |
| subject |
FiveWs.subject[x] |
| topic |
FiveWs.context |
| about |
FiveWs.context |
| encounter |
FiveWs.context |
| sent |
FiveWs.done[x] |
| received |
FiveWs.done[x] |
| recipient |
FiveWs.actor |
| sender |
FiveWs.actor |
| reason |
FiveWs.why[x] |
| Communication |
Event |
| identifier |
Event.identifier |
| basedOn |
Event.basedOn |
| partOf |
Event.partOf |
| status |
Event.status |
| statusReason |
Event.statusReason |
| subject |
Event.subject |
| encounter |
Event.encounter |
| sent |
Event.occurrence[x] {Invariant: maps to period.start} |
| received |
Event.occurrence[x] {Invariant: maps to period.end} |
| recipient |
Event.performer.actor |
| sender |
Event.performer.actor |
| reason |
Event.reason |
| note |
Event.note |
| Communication |
|
| reason |
.reasonCode |