ISO 21549-3:2014适用于在符合ISO/IEC 7810定义的ID-1卡物理尺寸的患者健康卡上记录或传输有限临床数据的情况。 ISO 21549-3:2014使用UML、纯文本和抽象语法符号（ASN.1）描述并定义了患者健康卡中使用或引用的有限临床数据对象。 ISO 21549-3:2014规定了受数据对象限制的临床数据中包含的数据的基本结构，但没有规定或强制要求存储在设备上的特定数据集。

ISO 21549-3:2014 is applicable to situations in which limited clinical data are recorded on or transported by patient healthcards compliant with the physical dimensions of ID-1 cards defined by ISO/IEC 7810. ISO 21549-3:2014 describes and defines the limited clinical data objects used in or referenced by patient healthcards using UML, plain text and abstract syntax notation (ASN.1). ISO 21549-3:2014 specifies the basic structure of the data contained within the data object limited clinical data, but does not specify or mandate particular data sets for storage on devices.