Sources¶

sssom-rosetta combines a small number of large, licensed vocabularies. Each one keeps its own version, so it's always clear which release a code came from.

OMOP Standardized Vocabularies¶

The base layer. OHDSI's Athena bundle brings SNOMED CT, LOINC, RxNorm and ICD-10/ICD-10-CM together in one place, with relationships already worked out between them. Access requires an OHDSI Athena account.

DHD Diagnosethesaurus (DT)¶

The Dutch national thesaurus of diagnosis codes, maintained by DHD. Used to add Dutch diagnosis terms that OMOP doesn't have. Access requires a Mijn DHD account. Both the diagnosis and procedure thesauri are delivered in the same format, uitleverformaat 4.3.

DHD Verrichtingenthesaurus (VT)¶

The Dutch national thesaurus of procedure codes, maintained by DHD. Same access and format as the Diagnosethesaurus above.

Why no open downloads¶

All of these vocabularies are licence-gated: there's no public download link. A curator downloads the release manually and hands it to sssom-rosetta, which then checks and stores it.

Planned: Z-Index (G-Standaard)¶

Z-Index's G-Standaard, the Dutch medicines reference, is on the roadmap as a future addition to the vocabulary graph.