An Object Identifier (OID) is used to uniquely identify objects across systems. An OID is supplied along with an ID, which uniquely identifies an object within the OID's coding system. The structure of an OID provides information about what type of identification system the ID belongs to. The example shows OIDs and IDs for identifying a Dutch caretaker by their UZI number, a patient by their BSN number, and a Dutch organization by their URA number.

1. OID OID = Object identifier Is used to identify objects over systems Is supplied together with an ID, which is a unique thing in the OID codingsystem ID OID

2. example ID&OID There are different ways to identify a dutch caretaker(BIG, UZI, AGB) In a message an id & OID is supplied Because the OID is 2.16.528.1.1007.3.1 we know that the Idan UZI identification is 2.16.528.1.1007.3.1 = UZI Nummer personen maintained by CIGB

3. Opbouw OID structuur © 2010 Capgemini. All rights reserved. Insert "Title, Author, Date"

4. Example message 2.16.840.1.113883.2.4.6.3 = BSN so it is a patient with BSN BSN 000197245 2.16.528.1.1007.3.3 = URA so it is an dutch orgniastion with URA 00123456 2.16.528.1.1007.3.2.400416.16 = code system of a care organisation, this data is present with in there system with id 3000201