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Programmer’s Guide HL7 standard protocols 13

Time/date in HL7 segments

When importing vital-sign data into an electronic patient-charting application, use the

timestamp associated with the OBR for the vital-signs record in the chart.

Format

Date and time in the HL7 segments are represented in this format:

YYYYMMDDHHMMSS.mmm±TZTZ

• Displayed time is local.

• Hours are in the range 0-23.

• Seconds (SS) are followed by the following:

3-digit millisecond value (which appears as 000 if no other value is provided)

+ora-

4-digit time-zone code

Example of HL7 time/date format:

26 January 2009, at 0.193 seconds past 12:22:02 PM, Pacific time (8 hours behind GMT):

20090126122202.193-0800

1 2 ... 12 13 14 15 16 17 18 19 20 21 22 ... 63 64

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