This part of ISO 21549 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.
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 this part of ISO 21549, data items required for that application are drawn from the
list of objects (some of which are extensible) as provided in Clause 5. These are used in conjunction with
other data defined in other parts of this International Standard.
The detailed functions and mechanisms of the following services are not within the scope of this part of
ISO 21549, (although its structures can accommodate suitable data objects elsewhere specified).
- The encoding of free text data.
- Security functions and related services which are likely to be specified by users for data cards
depending on their specific application, for example: confidentiality protection, data integrity
protection, and authentication of persons and devices related to these functions.
- Access control services which may depend on active use of some data card classes such as
microprocessor cards.
- The initialisation and issuing process (which begins the operating lifetime of an individual data
card, and by which the data card is prepared for the data to be subsequently communicated to it
according to this part of ISO 21549).