Ontology Strategy

This page outlines recommended standard practices for applying ontologies.

Data Class	OMOP Standard	NHS Preferred	Concept_ID	Source_Concept_ID	Comments
Clinically recorded conditions
Coding / Billing Diagnosis
Labs
Drugs
Physiological Observations
Procedures

Handling Exceptions

In rare situations there may not be an appropriate mapping. OMOP reserves concept ids > 2,000,000,000 for custom mappings. However, these should be used rarely. It is much more likely that we can find an appropriate existing representation.