• Include all codes defined in http://terminology.hl7.it/CodeSystem/istat-unitaTerritoriali
• Include these codes as defined in http://terminology.hl7.org/CodeSystem/v3-NullFlavor

  Code	Display
  UNK	Sconosciuto	Description:A proper value is applicable, but not known. Usage Notes: This means the actual value is not known. If the only thing that is unknown is how to properly express the value in the necessary constraints (value set, datatype, etc.), then the OTH or UNC flavor should be used. No properties should be included for a datatype with this property unless: Those properties themselves directly translate to a semantic of "unknown". (E.g. a local code sent as a translation that conveys 'unknown') Those properties further qualify the nature of what is unknown. (E.g. specifying a use code of "H" and a URL prefix of "tel:" to convey that it is the home phone number that is unknown.)

This value set includes codes based on the following rules:

This value set contains 8037 concepts

Expansion based on http://terminology.hl7.it/CodeSystem/istat-unitaTerritoriali version 0.2.0
Expansion based on http://terminology.hl7.it/CodeSystem/istat-unitaTerritoriali version 0.2.0, http://terminology.hl7.org/CodeSystem/v3-NullFlavor version 2018-08-12