MRCM Attribute Range Reference Set

Purpose

An 723592007 |MRCM attribute range reference set| allows attributes to be associated with a valid value range for a given SNOMED CT content type and rule strength. The range of each attribute is defined using an Expression Constraint. This expression constraint represents the set of concepts, expressions, or concrete values that may be used as the value of the given attribute.1 The 723592007 |MRCM attribute range reference set| also provides a summary of the concept model rule associated with each attribute (including all valid domains and the given range) using an Expression Constraint representation. This attribute rule can be completely auto-generated by combining information from the 723604009 |MRCM attribute domain reference set| and the 723592007 | MRCM attribute range reference set| .

Data Structure

An 723592007 |MRCM attribute range reference set| is structured as shown in the following table.

Field

Data type

Purpose

Mutable

PK*

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 inactive (i.e. removed from the active set) at a specified time.

YES (Full /Snapshot)

effectiveTime

Time

The inclusive date or time at which this version of the identified reference set member became the current version.

Note: In distribution files the effectiveTime should follow the short ISO date format (YYYYMMDD) and should not include the hours, minutes, seconds or timezone indicator.

The current version of this reference set member at 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 member as at the specified effectiveTime .

If active = 1 (true) the reference set member is part of the current version of the set, if active = 0 (false) the reference set member is not part of the current version of the set.

YES

moduleId

SCTID

Identifies the SNOMED CT module that contains this reference set member as at the specified effectiveTime .

The value must be a subtype of 900000000000443000 |Module (core metadata concept)| within the metadata hierarchy.

YES

refsetId

SCTID

Identifies the reference set to which this reference set member belongs.

In this case, a subtype descendant of: 723592007 |MRCM attribute range reference set|

referencedComponentId

SCTID

A reference to the SNOMED CT component to be included in the reference set. A reference to the SNOMED CT attribute concept to which the range defined by this member applies.

rangeConstraint

String

A parsable string, which defines the valid set of values that may be used for the given attribute (identified by the referencedComponentId).

If the attribute in the referencedComponentId is a subtype of 762705008 |Concept model object attribute (attribute)| then the rangeConstraint must be an expression constraint, which can be parsed using the ABNF rules defined by the Expression Constraint Language.

If the attribute in the referencedComponentId is a subtype of 762706009 |Concept model data attribute (attribute)| then the rangeConstraint must be parsable using the concreteValueReplacement ABNF rule specified in the SNOMED CT Template Syntax. For example, the following rangeConstraint includes the set of all positive integers: int (>#0..)

YES

attributeRule

String

An Expression Constraint that captures the domain, range and cardinality constraints for the given attribute, rule strength and content type. This string can be parsed using the ABNF syntax defined for the Expression Constraint Language. If ranges with concrete values are required, the Expression Constraint Language can be extended as described above (for rangeConstraint).

YES

ruleStrengthId

SCTID

A subtype of 723573005 |Concept model rule strength| which specifies whether the given rule is mandatory (resulting in an error) or optional (resulting in a warning).

YES

contentTypeId

SCTID

A subtype of 723574004 |Content type| which indicates the type of SNOMED CT content over which this rule applies.

YES

PK* indicates if the attribute is part of the primary key for that file/table.

Metadata

The following metadata hierarchy supports this reference set:

900000000000454005 |Foundation metadata concept|
- 900000000000455006 |Reference set|
  - 723564002 |MRCM reference set|
    723592007 |MRCM attribute range reference set|
    723562003 |MRCM attribute range international reference set|
- 900000000000457003 |Reference set attribute|

If ranges including concrete values (such as integers or strings) are required, the Expression Constraint Language can be extended, as described for rangeConstraint in the Data Structure section on this page.
Please note that the 723574004 |Content type| hierarchy is designed using 'universal restriction' logic. The hierarchy may therefore appear to be 'upside down'. However, it was designed in this way because if an MRCM rule applies to 723596005 |All SNOMED CT content| then it also applies to the Content Types that are a supertype of this - including 723594008 |All precoordinated SNOMED CT content| and 723595009 |All postcoordinated SNOMED CT content| .

Reference Set Descriptor and Example Data

Notes on the tables used to show descriptors and examples

The reference set example tables on this page have been revised as follows to aid clarity and understanding:

The first four columns which are present in all release files are not shown. The omitted columns (id, effectiveTime, active, moduleId) are used in the same way in all referenced sets to support identification, versioning and packaging. They do not directly affect the specific features of a particular reference set or reference set type.
Reference set columns that contain SNOMED CT identifiers are expanded to show details of the concept or description referenced by that identifier. In some cases, the term is shown in the same column using the expression syntax, in other cases an additional column with a name suffix '_term' has been added. In the standard reference set files only the identifier is present in the column and there is no added column for the term. When using reference sets, the term and other details of the component are looked up from the relevant component release files.

Descriptor Template

The table below shows the reference set descriptor for a reference set that follows the 723592007 |MRCM attribute range reference set| pattern.

refsetId

referencedComponentId

attributeDescription

attributeType

attribute Order

900000000000456007 |Reference set descriptor|

723592007 |MRCM attribute range reference set|

449608002 |Referenced component|

900000000000461009 |Concept type component|

900000000000456007 |Reference set descriptor|

723592007 |MRCM attribute range reference set|

723575003 |Range constraint|