HL7 CDA R2 AIS Implementation Guide

HL7 Additional Information Specification Implementation GuideCDAR2AIS0000R030STRAWHDV Example:STRAWXML parsers will normalize white space in PCDATA, so that the CDV example above and theexample below would yield the same data.STRAW3.7.14 Time Stamp (TS) Data TypeThe TS data type refers to a point in time, i.e., a date and time. The point in time may beexpressed with varying degrees of precision. It can be only a date, it can be a date with anaccompanying clock time specified to the minute, or the clock time can be precise to a second oreven a fraction of a second.Time stamps shall be formatted according to the HL7 date time specification. The format of adate time is "CCYYMMDDHHMMSS.sss+hhmm", where each part is further described in Table3.7-1 below.Table 3.7-1 Parts of an HL7 Date TimePart Time Unit Part Time Unit Part Time UnitCC century HH hour, using a 24hour clock+ + or – to represent differencefrom UTC (a.k.a., GMT)YY year MM minute hh hours difference from UTCMM month SS second mm Minutes difference from UTCDD date sss Decimal fractionof secondThe HL7 Date time format allows for varying degrees of precision by omitting more precisecomponents. The offset (+hhmm) from Coordinated Universal Time (UTC) must be present orabsent in entirety. If the offset from UTC is absent, then local time is assumed. Thus,200303061425 represents March 6, 2003, at 2:25PM, in the local time zone of the documentproducer.If the time zone is not included the receiver shall assume that the time is based on thelocal time zone at the time and place where the event being described occurred.For example, transmitting 1:20 pm on May the 31st, 2003 for Eastern Daylight Time, which is 4Page 64March 2007Copyright © 1998-2007Health Level Seven, Inc. All rights reserved.Release 3.0 Draft Standard