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| Ambiguous concept that requires intermediate deprecated inactive concepts |
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Mixed ambiguity with a conjunction: | Concept |
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| t | 199779004 |Persistent occipitoposterior or occipitoanterior position - delivered (disorder)| |
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has 2 possible meanings, neither of which exist in SNOMED CT:- POSSIBLY_EQUIVALENT_TO xxxxxxxx Persistent occipitoanterior presentation and now delivered
- POSSIBLY_EQUIVALENT_TO yyyyyyyy Persistent occipitoposterior presentation and now delivered
- However, both of these are compound clinical statements that should not be added as active concepts but are required in order to satisfy the requirement to ensure clinically safe reporting of historical data.
- In addition, it is necessary to resolve the conjunction that arises from the original concept.
Resolution: - Create 2 new concepts:
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| Concept |
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| t | xxxxxxxx Persistent occipitoposterior presentation and now delivered (finding) |
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-
| Concept |
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| t | yyyyyyyy Persistent occipitoanterior presentation and now delivered (finding) |
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Inactivate | Concept |
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| t | 199779004 |Persistent occipitoposterior or occipitoanterior position - delivered (disorder)| |
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|
- POSSIBLY_EQUIVALENT_TO xxxxxxxx Persistent occipitoanterior presentation and now delivered (disorder)
- POSSIBLY_EQUIVALENT_TO yyyyyyyy Persistent occipitoposterior presentation and now delivered (disorder)
- Now resolve the 2 conjunctions:
- Inactivate
| Concept |
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| t | xxxxxxxx Persistent occipitoposterior presentation and now delivered (disorder) |
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as a Classification concept- EQUIVALENT_TO
| Concept |
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| t | 37235006 |Occipitoposterior position (finding)| |
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- EQUIVALENT_TO
| Concept |
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| t | 236973005 |Delivery procedure (procedure)| |
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- inactivate
| Concept |
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| t | xxxxxxxx Persistent occipitoanterior presentation and now delivered (disorder) |
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|
as a Classification concept- EQUIVALENT_TO
| Concept |
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| t | 90381008 |Occipitoanterior position (finding)| |
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- EQUIVALENT_TO
| Concept |
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| t | 236973005 |Delivery procedure (procedure)| |
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|
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Resolving sequences of Historical Associations
The intention is that this functionality to resolve sequences of Historical Associations will normally be seamlessly integrated into the tooling so as to present to the user the appropriate updated historically association to be allocated.
Whenever an already stated POSSIBLY_EQUIVALENT_TO target itself also becomes inactive - whether at the same release or later , - identifying the new active, direct replacement(s) for the original inactive concept , should follow the combinatorial logic stated below.
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