Decision: remove survey, and social hx categories from the US Core Observation Clinical Result Profile us-core category slice binding    category:us-core S 0..* CodeableConcept Classification of type of observation Binding: Clinical Result Category Value Set ( required ) This means creating a new ValueSet: Clinical Result Category Value Set social-history vital-signs imaging laboratory procedure survey exam therapy activity Background All Observations can be Simple Observations. (superset) All Screening and Assessment have a  category of "survey" per the existing profile Clinical tests typically do not have a category of survey or social hx, but is not prohibited. This is not a concern for most servers and clients because they look at a superset of profiles.  It is a concern for testers and validators. Although the US Core category slice suggests a non-intersecting set of categories for the Observation profiles in question, it does not prohibit other category slices from using these categories and thus does not guarantee that category can always be used to impute the profile.  Another means may be needed for testing, such as a rule to use a meta.profile if the profile cannot be imputed from its contents. Rationale: By creating a non-intersecting set of Must Support category codes for the Observation profiles in question, testers and implementers will benefit from greater clarity and guidance.  This approach still allows for flexibility in using other categories based on business needs.