Metadata

Information that is given to describe or help you use other information. Metadata are information parameters that provide contextual information about the actual information within a document (or other information container). Examples are: date of event and/or publication, size in bytes, technical format, template, standard version, document version, author specialty, functional category et cetera. 

Definition Source

Guideline on the electronic exchange of health data under Cross-Border Directive 2011/24/EU