<?xml version="1.0" encoding="UTF-8"?><CodeSystem xmlns="http://hl7.org/fhir"><id value="UNII"/><text><status value="generated"/><div xmlns="http://www.w3.org/1999/xhtml"><p class="res-header-id"><b>Generated Narrative: CodeSystem UNII</b></p><a name="UNII"> </a><a name="hcUNII"> </a><a name="UNII-en-US"> </a><p>This case-sensitive code system <code>http://fdasis.nlm.nih.gov</code> defines codes, but no codes are represented here</p></div></text><url value="http://fdasis.nlm.nih.gov"/><identifier><system value="urn:ietf:rfc:3986"/><value value="urn:oid:2.16.840.1.113883.4.9"/></identifier><version value="1.0.0"/><name value="UNII"/><title value="Unique Ingredient Identifier (UNII)"/><status value="active"/><experimental value="false"/><date value="2022-08-23T00:00:00-00:00"/><publisher value="U.S. Food and Drug Administration (FDA)"/><contact><name value="U.S. Food and Drug Administration (FDA)"/><telecom><system value="url"/><value value="https://www.fda.gov/"/></telecom></contact><description value="A UNII is a non-proprietary, free, unique, unambiguous, nonsemantic, alphanumeric identifier based on a substance's molecular structure and/or descriptive information. UNII identifiers are generated based on scientific identity characteristics using ISO 11238 data elements. UNII availability does not imply any regulatory review or approval. Synonyms and mappings are based on the best public information available at the time of publication."/><copyright value="Unless otherwise noted, the contents of the FDA website (www.fda.gov) — both text and graphics — are not copyrighted. They are in the public domain and may be republished, reprinted and otherwise used freely by anyone without the need to obtain permission from FDA. Credit to the U.S. Food and Drug Administration as the source is appreciated but not required."/><caseSensitive value="true"/><content value="not-present"/></CodeSystem>