This case-insensitive code system http://fhir.cezih.hr/specifikacije/CodeSystem/KZN defines the following codes in a Is-A heirarchy:

Code Display
1 KZN šifra 1
2 KZN šifra 2
3 KZN šifra 3
4 KZN šifra 4
<status value="draft" /> <experimental value="false" /> <date value="2024-01-25T14:50:58+00:00" /> <contact> <name value="Krešimir Kerš" /> <telecom> <system value="email" /> <value value="kresimir.kers@ericsson.com" /> </telecom> </contact> <description value="Šifrarnik KZN. Trenutno su uneseni samo primjeri sadržaja za potrebe implementacije i testiranja." /> <jurisdiction> <coding> <system value="urn:iso:std:iso:3166" /> <code value="HR" /> <display value="Croatia" /> </coding> <text value="Croatia" /> </jurisdiction> <caseSensitive value="false" /> <hierarchyMeaning value="is-a" /> <compositional value="false" /> <versionNeeded value="false" /> <content value="complete" /> <concept> <code value="1" /> <display value="KZN šifra 1" /> </concept> <concept> <code value="2" /> <display value="KZN šifra 2" /> </concept> <concept> <code value="3" /> <display value="KZN šifra 3" /> </concept> <concept> <code value="4" /> <display value="KZN šifra 4" /> </concept> </CodeSystem>