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OHDSI / Themis

Repository for OMOP CDM conventions as defined by THEMIS. These can be reference lists of concepts, pieces of standardized code for data generation or quality certification, and debates.
Apache License 2.0
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Mapping from source conditions to standard concepts #162

Closed askanter closed 6 months ago

askanter commented 6 months ago

Mapping from source conditions to standard concepts

CDM or THEMIS convention?

THEMIS

Table or Field level?

Field

Is this a general convention?

No

Summary of issues

Mapping of disease, diagnosis or problem concepts to the condition table may not be 1:1 with standard concepts or might not be synonymous

Summary of answer

Condition concepts are primarily mapped to SNOMED CT for standard concepts. Some concepts like Oncology diagnoses might be mapped to ICD-O. When mapping, source concepts should be mapped fully to standard concepts even if it requires more than one code. If the source system already maps to standard codes use them, rather than mapping first to ICD and then map to SNOMED.

Related links

(https://forums.ohdsi.org/t/duplicate-concept-ids-for-different-condition-concept-ids/9336) https://forums.ohdsi.org/t/one-condition-maps-to-2-condition-concept-id-what-to-do/2968 https://forums.ohdsi.org/t/family-history-extension-model/17947/7

Other comments/notes

clairblacketer commented 6 months ago

Thanks @askanter we wlll create a general convention page for this one on the themis repo