This is the ValueSet that contains all the codes in Readiness Assessment Codes (http://hl7.org/fhir/us/pco/ValueSet/readiness-assessment-codes) and Readiness Assessment Codes (http://hl7.org/fhir/us/pco/ValueSet/readiness-assessment-codes). E.g. what you have to deal with if you get resources containing codes in either of them