This is the Continuous Integration Build of FHIR (will be incorrect/inconsistent at times).
See the Directory of published versions 
8.23.8 Resource CommunicationRequest - Mappings
Mappings for the communicationrequest resource (see Mappings to Other Standards for further information & status).
CommunicationRequest | workflow.order |
identifier | FiveWs.identifier |
status | FiveWs.status |
intent | FiveWs.class |
category | FiveWs.class |
priority | FiveWs.grade |
subject | FiveWs.subject[x] |
about | FiveWs.context |
encounter | FiveWs.context |
occurrence[x] | FiveWs.planned |
authoredOn | FiveWs.recorded |
requester | FiveWs.author |
recipient | FiveWs.actor |
informationProvider | FiveWs.actor |
reason | FiveWs.why[x] |
CommunicationRequest | Request |
identifier | Request.identifier |
basedOn | Request.basedOn |
replaces | Request.replaces |
groupIdentifier | Request.groupIdentifier |
status | Request.status |
statusReason | Request.statusReason |
intent | Request.intent |
priority | Request.priority |
doNotPerform | Request.doNotPerform |
subject | Request.subject |
about | Request.supportingInfo |
encounter | Request.encounter |
content[x] | Request.note |
occurrence[x] | Request.occurrence[x] |
authoredOn | Request.authoredOn |
requester | Request.requester |
recipient | Request.performer |
informationProvider | Request.performer |
reason | Request.reason |
note | Request.note |
CommunicationRequest | |
basedOn | .outboundRelationship[typeCode=FLFS].target |
replaces | .outboundRelationship[typeCode=RPLC].target |
groupIdentifier | .inboundRelationship(typeCode=COMP].source[moodCode=INT].identifier |
statusReason | .inboundRelationship[typeCode=SUBJ].source[classCode=CACT, moodCode=EVN].reasonCOde |
requester | .participation[typeCode=AUT].role |
reason | .reasonCode |
note | .inboundRelationship(typeCode=SUBJ].source[classCode=ANNGEN, moodCode=EVN].value[xsi:type=ST] |