This code system http://terminology.hl7.org/CodeSystem/read-Codes defines many codes, but they are not represented here

 <status value="retired"/> <experimental value="false"/> <date value="2021-11-09T10:00:00+10:00"/> <publisher value="TBD - External Body"/> <contact> <name value="Name: Dr David Robinson; Address: NHS Information Authority; Aqueous 2; Rocky lane; Aston cross; Birmingham; UK; Telephone: +44 (0)121 333 0314; Fax: +44 (0)121 333 0334; E-mail: david.robinson@nhsia.nhs.uk"/> </contact> <description value="Clinical Terms Version 3 contains over 200,000 coded concepts arranged in a sub-type hierarchical structure. Top level hierarchy sections: Disorders Findings Morphology Surgical procedures Regimes & therapies Investigations Stages & scales Occupations Organisms Units Drugs Appliances & equipment"/> <content value="not-present"/> </CodeSystem>