This is the Continuous Integration Build of FHIR (will be incorrect/inconsistent at times).
See the Directory of published versions 
| Invoice |
Act[moodCode=EVN] |
| identifier |
.identifier |
| status |
.status |
| type |
.code |
| subject |
.participation[typeCode=SBJ].role |
| recipient |
.inboundRelationship(typeCode=COMP].source[classCode<=PCPR, moodCode=EVN] |
| participant |
.participation[typeCode=PRF].role[scoper.determinerCode=INSTANCE] |
| role |
.participation.functionCode |
| actor |
.player |
| issuer |
.scoper |
| lineItem |
.participation[typeCode=PRF].role[scoper.determinerCode=INSTANCE] |
| chargeItem[x] |
.player |
| priceComponent |
.participation[typeCode=PRF].role[scoper.determinerCode=INSTANCE] |
| totalPriceComponent |
.participation[typeCode=PRF].role[scoper.determinerCode=INSTANCE] |
| note |
.inboundRelationship(typeCode=SUBJ].source[classCode=ANNGEN, moodCode=EVN].value[xsi:type=ST] |