HL7 V2 FAQ

HL7 V2 Frequently Asked Questions (FAQ)

Please feel free to add questions here concerning HL7 Version2.

Q: Where can I find the latest v2.xml specification, schemas, DTDs etc.

• A: http://www.hl7.org/special/Committees/xml/drafts/v2xml.html . Things that are ZIP files are schemas and DTD. Things that are PDFs are specifications.

Q: Where can I find tools for working with V2

• A: See below for a list of tools (feel free to add to this list:)
  • http://www.HL7.com.au/HL7-Tools.htm lists lots of tools for all things HL7.
  • http://caristix.com/hl7-tools/ lists HL7 tools

Q: How does one use UNICODE?

• A: See Character Set used in v2 messages

Q: What's the equivalent of the HL7 v2 null value (|""|) in HL7 version 3?

• A: See Null

Q: What tools can I use to transform v2.XML into v2 pipe-hat syntax?

• A: See v2.XML to v2 ER encoding transformation