HL7 and FHIR cheat sheets

Scannable, bookmarkable references for the things you look up over and over: FHIRPath expressions, HL7v2 segments, and the required fields for US Core and AU Core.

• FHIRPath cheat sheet
  The FHIRPath expressions you actually reach for day to day: walking into a resource, filtering collections, checking whether something exists, and pulling values out of strings.
• HL7v2 segment reference
  A scannable reference to the HL7 version 2 segments you meet most often, what each one carries, and the messages that use them.
• US Core Patient required fields checklist
  The elements you need to populate to satisfy the US Core Patient profile, with the must-support data elements and the US-specific extensions that trip people up.
• AU Core Patient required fields checklist
  The key elements for the AU Core Patient profile, with particular attention to the Australian identifiers, above all the Individual Healthcare Identifier (IHI).

Related

HL7v2 message reference · FHIR resource reference · HL7v2 to FHIR migration guide