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CSCR-050 Make ObservationRange.negationInd and Criterion.negationInd optional
Revision as of 21:05, 12 February 2006 by RikSmithies (talk | contribs)
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Submitted by: Rik Smithies | Revision date: 12-Feb-2006 |
Submitted date: 12-Feb-2006 | Change request ID: CSCR-050 |
Issue
ObservationRange.negationInd and Criterion.negationInd are [1..1] required
Recommendation
- Change ObservationRange.negationInd and Criterion.negationInd to be [0..1] optional
Rationale
Terminfo guidance and thinking in NHS/UK domain, rules out the use of negationInd when act.code contains a code from a scheme that already encompasses negation (eg SnomedCT). Currently negationInd cannot be refined out in models that mandate such a coding scheme, leading to potential inconsistency.