value set http://hl7-fhir.github.io/terminologies.html

[wanghaisheng]

http://hl7-fhir.github.io/terminologies.html The set of coded values that is allowed to be used in an element of one of these 4 data types is known as a "value set". Anywhere these data types are used, the specification "binds" a value set to the element.

是不是说一个可编码值的字段，只能选上述三种数据类型之一，而且要绑定一个value set给这个字段，我们不直接使用code system

[wanghaisheng]

http://hl7-fhir.github.io/terminologies.html The set of coded values that is allowed to be used in an element of one of these 4 data types is known as a "value set". Anywhere these data types are used, the specification "binds" a value set to the element. does this mean every codable element used in resource we can only use one of the above 3 data types,and we should specify a value set for it ,we dont directly use code system anymore

[wanghaisheng]

[15/3/16 上午11:55:19] Grahame Grieve: well, what other data type would you use? [15/3/16 上午11:55:48] Grahame Grieve: and, no, you don't bind them to code systems directly; you need a level of indirection. Though there's a value set for every code system, so just bind to that [15/3/16 上午11:58:42] wanghaisheng: i get it ,any value set is a subset of code system ,and the biggest one can contain all the code in one code system. [15/3/16 下午12:03:21] Grahame Grieve: yes