The National Library of Medicine (NLM) Value Set Authority Center (VSAC) has updated VSAC with the most recent provisional terminology codes published by LOINC®, in response to the COVID-19 pandemic.

These pre-release special use provisional codes were developed by LOINC in response to the COVID-19 pandemic and they are based on the most up to date information available at the time of their creation.

• Code System: LOINC
• VSAC Code System Version: Provisional_2020-11-02
• Additional Information: LOINC Prerelease Terms, Special Use Codes Only

The “VSAC Code System Version” designation is a VSAC-created element based on the VSAC acquisition date of the provisional codes. Each provisional code system version contains all provisional codes, cumulatively, until the terminology incorporates their provisional codes into a formal release.

Be aware that downstream users may not be ready to handle prerelease codes until they are published in an official terminology release. See our VSAC Support Center page on how to include provisional codes in your VSAC value sets.

Value set authors who create COVID-19 related value sets can Contact NLM to request their COVID-19 value sets be included in a prefiltered VSAC search.

Find information about COVID-19 provisional codes in VSAC.

Last Reviewed: November 4, 2020