Generated Narrative: NamingSystem NHSNKneeReplacement Summary Defining URL http://terminology.hl7.org/NamingSystem/NHSNKneeReplacement Version 2.1.0 Name NHSNKneeReplacement Title NHSN KneeR eplacement Status retired Definition NHSN Knee Replacement Identifiers Type Value Preferred OID 2.16.840.1.113883.6.264 true URI http://terminology.hl7.org/CodeSystem/NHSNKneeReplacement true