This case-sensitive code system http://hl7.org/fhir/v3/EntityNamePartTypeR2 defines the following codes in a Is-A hierarchy:
Code
Display
Definition
DEL
delimiter
Description:A delimiter has no meaning other than being literally printed in this name representation. A delimiter has no implicit leading and trailing white space.
FAM
family
Description:Family name, this is the name that links to the genealogy. In some cultures (e.g. Eritrea) the family name of a son is the first name of his father.
GIV
given
Description:Given name. Note: don't call it "first name" since the given names do not always come first.
TITLE
title
Description:Part of the name that is acquired as a title due to academic, legal, employment or nobility status etc.
Note:Title name parts include name parts that come after the name such as qualifications, even if they are not always considered to be titles.