Similar but different entity cluster

Identifying and definitional attributes

Metadata item type:Data Set Specification
METeOR identifier:554856
Registration status:Health, Standard 05/10/2016
DSS type:Data Element Cluster

The Similar but different entity cluster includes data elements that define identifiers that have similar identifying information but belong to different entities. This cluster also describes information about the organisation or individual provider which confirms that similar records are not duplicates and the date this confirmation occurs.

Collection and usage attributes


Provision should be made in systems for regular monitoring of new and changed entries which are similar enough to possibly be the same entity, for example identical twins or an identically named parent and child. It is necessary to be able to indicate clearly that two entries are not actually duplicates and ensure they do not appear on lists of potential duplicates for follow-up.

Source and reference attributes

Submitting organisation:

Australian Institute of Health and Welfare


Standards Australia 2014. AS 4846:2014. Person and provider identification in healthcare, Section 3.6 Similar but different entity. Sydney: Standards Australia.

Relational attributes

Related metadata references:

See also Identifier—investigation flag, yes/no code N Health, Standard 05/10/2016

See also Identifier—investigation outcome, duplicate/intertwined/similar record code N Health, Standard 05/10/2016

Implementation in Data Set Specifications:

Identification in healthcare cluster Health, Standard 05/10/2016

Parent DSS specific attributes +

Metadata items in this Data Set Specification

    Show more detail
Seq No.Metadata item Obligation Max occurs
1Identifier—similar identifier designation, text X[X(19)]Mandatory1
2Identifier—similar entity confirmed by, text X[X(199)]Mandatory1
3Identifier—similar entity confirmation date, DDMMYYYYMandatory1
4Date—accuracy indicator, code AAAMandatory1