This is the ValueSet that contains all the codes in Interagency Language Roundtable Speaking Skill Scale (http://terminology.hl7.org/ValueSet/ILRSpeakingSkillScale) and Interagency Language Roundtable Speaking Skill Scale (http://terminology.hl7.org/ValueSet/ILRSpeakingSkillScale). E.g. what you have to deal with if you get resources containing codes in either of them