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What if my institution records new concepts into the EHR that are not already included in the ontology?
It's not unusual for institutions to include coding in their EHR to reflect novel diagnoses, new medications, etc. And some institutions prefer to use proprietary codes for some clinical information. If your institution is using concepts or codes that are not reflected in your i2b2 ontology tree, the then your researchers will not be able to query for those concepts in i2b2.
One The remedy for this is to customize your ontology trees to include the new concepts that are missing from the i2b2 ontologies. See Ontologies 201 – Custom Metadata – Additions and Modifications.
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If your new concepts are not strictly proprietary, then |
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please consider contacting the appropriate coding authority, |
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asking them to include your new concepts into the next release of their terminology. |
What if my institution's EHR is missing concepts that are found in one of the ontology trees?
If your institution's patient data do not include concepts from one of the ontology trees, then queries made from that tree's concepts may come up with zero results.
Trees with zero matching patient records can be handled in these ways:
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Never fear! No institution will be using all of the concepts in every ontology tree. It is normal to have concepts in the ontology tree that match none of your patient records.
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