This part of ISO 21549 is applicable to situations in which such data are recorded on or transported by patient healthcare data cards compliant with the physical dimensions of ID-1 cards defined by ISO 7810.This part of ISO 21549 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.In order to facilitate interoperability, whenever an application is built for use in the healthcare domain in compliance with ISO 21549, data items required for that application shall be drawn from the list of objects (some of which are extensible) as provided