Medi-Span Generic Product Identifier
The Medi-Span Generic Product Identifier (GPI) is a proprietary 14-character concept and therapeutic classification system from Wolters Kluwer's Medi-Span suite. GPI is used to identify and hierarchically group drug products for medication reconciliation, clinical screening, formulary management, and interoperability workflows. It remains actively maintained as part of the commercial Medi-Span drug data ecosystem and is used in OMOP/Athena contexts as one of the source vocabularies incorporated into standardized vocabulary distributions.
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