ISO 21549-4:2014适用于除ISO 21549-3中定义的有限临床数据之外的临床数据被记录在符合ISO/IEC 7810定义的ID-1卡物理尺寸的患者医疗数据卡上或由其传输的情况。 ISO 21549-4:2014规定了数据对象扩展临床数据中包含的数据的基本结构，但未规定或要求存储在设备上的特定数据集。

ISO 21549-4:2014 is applicable to situations in which clinical data additional to the limited clinical data defined in ISO 21549？3 is recorded on or transported by patient healthcare data cards compliant with the physical dimensions of ID-1 cards defined by ISO/IEC 7810. ISO 21549-4:2014 specifies the basic structure of the data contained within the data object extended clinical data, but does not specify or mandate particular data sets for storage on devices.