<?xml version="1.0" encoding="UTF-8"?><CodeSystem xmlns="http://hl7.org/fhir"><id value="ahfs"/><text><status value="generated"/><div xmlns="http://www.w3.org/1999/xhtml"><p class="res-header-id"><b>Generated Narrative: CodeSystem ahfs</b></p><a name="ahfs"> </a><a name="hcahfs"> </a><a name="ahfs-en-US"> </a><p>This case-sensitive code system <code>http://terminology.hl7.org/CodeSystem/ahfs</code> defines codes, but no codes are represented here</p></div></text><url value="http://terminology.hl7.org/CodeSystem/ahfs"/><identifier><system value="urn:ietf:rfc:3986"/><value value="urn:oid:2.16.840.1.113883.6.234"/></identifier><version value="2.0.1"/><name value="Ahfs"/><title value="AHFS Pharmacologic-Therapeutic Classification"/><status value="retired"/><experimental value="false"/><date value="2021-11-09T10:00:00+10:00"/><publisher value="TBD - External Body"/><contact><name value="American Society of Health-System Pharmacists"/></contact><description value="**Description:** The AHFS Pharmacologic-Therapeutic Classification has been in use in hospitals in the United States since its inception in 1959. An integral part of the American Hospital Formulary Service, the AHFS classification allows the grouping of drugs with similar pharmacologic, therapeutic, and/or chemical characteristics. Today, the AHFS classification is used by many people outside of hospitals."/><caseSensitive value="true"/><content value="not-present"/></CodeSystem>