We use a proper HL7 parser built into our interface engine (Mirth Connect), extract the data we use and dump it into PostgreSQL. Regular expressions would be an

We use a proper HL7 parser built into our interface engine (Mirth Connect), extract the data we use and dump it into PostgreSQL. Regular expressions would be an adequate tool for parsing HL7 if you wanted to roll your own, but it made little sense to do everything from scratch.