Purpose

The | Map correlation and origin type reference set| is used to meet the requirements for representation of maps between codes in another code system (other-codes) and a SNOMED CT concept where the following requirements apply.

A requirement to indicate the degree of correlation between the SNOMED CT concept and the other-codes.
A requirement to indicate whether a concept or code was added to either code system as a result of the mapping process and, in this case, to indicate in which code system the concept or code originated.
A requirement to represent the SNOMED CT attribute to which the other-code should be applied in order to capture the full specificity of the value represented by the other-code.
No requirements for mapping rules or advice to be included with each map.

Data Structure

Field	Data type	Purpose	Mutable	Part of Primary Key
id	UUID	A 128 bit unsigned Integer, uniquely identifying this reference set member. Different versions of a reference set member share the same id but have different effectiveTime. This allows a reference set member to be modified or made active (i.e. removed from the active set) at a specified time.	NO	YES (Full/Snapshot)
effectiveTime	Time	The inclusive date or time at which this version of the identified reference set memberbecame the current version. The current version of this reference set memberat time T is the version with the most recent effectiveTime prior to or equal to time T .	YES	YES (Full) Optional (Snapshot)
active	Boolean	The state of the identified reference set memberas at the specified effectiveTime . If active = 1 (true) the reference set memberis part of the current version of the set, if active = 0 (false) the reference set memberis not part of the current version of the set.	YES	NO
moduleId	SCTID	Identifies the SNOMED CT modulethat contains this reference set memberas at the specified effectiveTime . The value must be a subtypeof 900000000000443000 \| Module (core metadata concept)\| within the metadata hierarchy.	YES	NO
refsetId	SCTID	Identifies the reference setto which this reference set memberbelongs. In this case, set to as subtype descendant of: \| Map correlation and origin type reference set (foundation metadata concept)\|	NO	NO
referencedComponentId	SCTID	A reference to the SNOMED CT componentto be included in the reference set.	NO	NO
mapTarget	String	The other-code to/from which the concept is mapped.	NO	NO
attributeId	SCTID	A reference to the SNOMED CT concept representing the attribute to which the referencedComponentId (other-code) applies. In some cases, other-codes may be overloaded with a meaning that combines the meaning of a specific attribute with a value applied to it in the SNOMED CT concept model¹ , in these cases accurate mapping needs to specify both aspects of the meaning. The attributeId provides effective disambiguation in these cases. Values of attributeId are restricted to subtypes of \| Concept model attribute\| .	YES	NO
correlationId	SCTID	The correlation between the SNOMED CT concept and the other-code. Possible values are the following subtypes of 447247004 \| SNOMED CT source code to target map code correlation value\| : 447559001 \|Broad to narrow map from SNOMED CT source code to target code\| 447557004 \|Exact match map from SNOMED CT source code to target code\| 447558009 \|Narrow to broad map from SNOMED CT source code to target code\| 447560006 \|Partial overlap between SNOMED CT source code and target code\|	YES	NO
contentOriginId	SCTID	Indication of whether the concept was initially in one of the terminologies (SNOMED CT or other-codes) and added to the other as part of mapping or was in both terminologies at the outset. Values are subtypes of 705116007 \| Original code system source for linked content value\| .	YES	NO

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4.2.14. Map Correlation and Origin Reference Set

Purpose

Data Structure