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Excerpt

Purpose

...

The 

Concept

...

t705109006 Code to expression type reference set
 is designed to enable associations between

...

codes in another code

...

system 

Gloss
t(other-codes)
t:other-codes

...

 and 

Gloss
tSNOMED CT concepts
, where the following constraints apply:

  1. Some of

...

  1. the 
    Gloss
    tother-codes
    t:other-codes
     cannot be mapped to an individual SNOMED

...

  1. CT 
    Gloss
    tconcept
    .
  2. Licensing conditions (or other considerations) prevent addition of new SNOMED CT concepts to represent the same meaning as

...

  1. the 
    Gloss
    tother-codes
    t:other-codes
    .

...

  1. The 
    Gloss
    tother-codes
    t:other-codes
     can be logically defined using

...

  1. the 
    Gloss
    tSNOMED concept model
     to represent the same

...

  1. meaning 
    Gloss
    t(sufficiently defined)
     or a similar though less specific

...

  1. meaning 
    Gloss
    t(primitive)
    .
  2. Other requirements similar for those applicable to mapping may also apply including:
    1. An indication of the degree of correlation between

...

    1. the  
      Gloss
      tother-code
      t:other-codes
       and the SNOMED CT expression.
    2. An indication of whether

...

    1. the 
      Gloss
      tother-code
      t:other-codes
       was created before any single concept representation of that meaning in SNOMED CT or whether the single concept representation in SNOMED CT predated the creation of the association.

Data Structure

The general approach to the above requirements is to associate each of

...

the 

Gloss
tother-codes
t:other-codes
 with a representation of the same logic based definition as would have been applied to a SNOMED CT concept with that meaning. However, since

...

the  

Gloss
tother-code
t:other-codes
 are not identified by

...

an  

Specref
RefTypedata type
tSCTID
, the logical definition cannot be represented

...

using  

Gloss
tdefining relationships
. There are two potential approaches to this, one would be to use a general purpose description logic language (e.g.

...

  

Gloss
tOWL
) and the other is to use

...

Gloss
tSNOMED CT expression
 to represent each definition.

...

The 

Concept
ShowPartsterm
t705109006 Code to expression type reference set
 is designed to support the expression-based approach.

...

Field

...

Data type

...

Purpose

...

id

...

Specref
RefTypedata type
tUUID

...

A 128 bit unsigned integer, uniquely identifying the reference set member.

...

Specref
teffectiveTime

...

Specref
RefTypedata type
tTime

...

Specifies the inclusive date at which this change becomes effective.

...

Specref
tactive

...

Specref
RefTypedata type
tBoolean

...

Specifies whether the member's state was active or inactive from the nominal release date specified by the effectiveTime field.

...

Specref
tmoduleId

...

Specref
RefTypedata type
tSCTID

...

Identifies the member version's module. Set to a child of

Concept
ShowPartsterm
t900000000000443000 Module
in the metadata hierarchy.

...

Specref
trefsetId

...

Specref
RefTypedata type
tSCTID

Identifies the reference set and must be a subtype of

Concept
ShowPartsterm
t705109006 Code to expression type reference set
which is located in the metadata hierarchy as shown below:

...

Caption label
CapIdsimple-map-reference-set-data-structure
CapTypeTable
Code to Expression Reference Set - Data structure

Refset spec table
Sizefs7
RefsetTypeCode to Expression Reference Set


Metadata

The following metadata

Gloss
PreSpacefalse
thierarchy
supports this
Gloss
PreSpacefalse
treference set
:

Caption label
CapIdsimple-map-reference-sets-in-the-metadata-hierarchy
CapTypeTable
Code to Expression Reference Set in the Metadata Hierarchy


Scg expression
Borderridge
  900000000000454005 |Foundation metadata concept|
		900000000000455006 |Reference set|
		

...

ShowFormatinline

...

		705109006 |Code to expression type reference set|

...




Excerpt Include
REUSE:Notes on Reference Set Example Tables
REUSE:Notes on Reference Set Example Tables
nopaneltrue

Descriptor template and examples

The tables below show the descriptors that define examples of

Gloss
PreSpacefalse
treference sets
that follow the
Concept
t705109006 |Code to expression type reference set (foundation metadata concept)|
ShowFormatinline
pattern.


Caption label
CapIdrefset-descriptor-rows-for
CapTypeTable
Refset Descriptor rows for a Code to Expression Reference Set


refsetId

referencedComponentId (Referenced component)

attributeDescription (Attribute description)

attributeType (Attribute type)

attributeOrder (Attribute order)

Concept
t900000000000456007|Reference set descriptor|

Concept
t705109006 |Code to expression type reference set|

Concept
t449608002 |Referenced component|

Concept
t900000000000461009|Concept type component|

0

Concept
t900000000000456007|Reference set descriptor|

Concept
t705109006 |Code to expression type reference set|


Concept
t900000000000505001 |Map target|

Concept
t900000000000465000|String|

1

Concept
t900000000000456007|Reference set descriptor|

Concept
t705109006 |Code to expression type reference set|

Concept
t706999006 |Expression|

Concept
t706999006 |Expression|

2

Concept
t900000000000456007|Reference set descriptor|

Concept
t705109006 |Code to expression type reference set|
Concept
t705109006 |Code to expression type reference set|

Concept
t734867002 |Expression definition status|

Concept
t900000000000461009|Concept type component|

3

Concept
t900000000000456007|Reference set descriptor|

Concept
t705109006 |Code to expression type reference set|

Concept
t447247004 |SNOMED CT source code to target map code correlation value|

Concept
t900000000000461009|Concept type component|

4

Concept
t900000000000456007|Reference set descriptor|

Concept
t705109006 |Code to expression type reference set|


Concept
t705116007 |Original code system source for linked content value|

Concept
t900000000000461009|Concept type component|

5

Refset Examples


Caption label
CapIdsample-content-from-a-simple-map-reference-set
CapTypeTable
Sample Content from a Code to Expression Type Reference Set


refsetId

referencedComponentId 

mapSource

expressiondefinitionStatusIdcorrelationIdcontentOriginId

Concept
t705110001 |LOINC Term to Expression reference set|

Concept
t705114005 |LOINC Code System|

48023-6363787002:246093002=720113009,370134009=123029007,246501002=702675006,704327008=122592007,370132008=117363000,704319004=50863008,704318007=705057003

Concept
t900000000000073002 |Sufficiently defined by necessary conditions definition status|

Concept
t447557004 |Exact match map from SNOMED CT source code to target code|

Concept
t705117003 |Originally in LOINC|

Concept
t705110001 |LOINC Term to Expression reference set|

Concept
t705114005 |LOINC Code System|

51406-7363787002:704323007=123027009,704321009=718500008,704327008=122575003,704322002=64033007,704318007=118544000,370132008=30766002,704324001=706939009

Concept
t900000000000073002 |Sufficiently defined by necessary conditions definition status|

Concept
t447557004 |Exact match map from SNOMED CT source code to target code|

Concept
t705117003 |Originally in LOINC|

Concept
t705110001 |LOINC Term to Expression reference set|

Concept
t705114005 |LOINC Code System|

51406-7363787002:370134009=123029007,704327008=122592007,704318007=118556004,370132008=30766002,704319004=50863008,246093002=4546008

Concept
t900000000000073002 |Sufficiently defined by necessary conditions definition status|

Concept
t447557004 |Exact match map from SNOMED CT source code to target code|


Concept
t705117003 |Originally in LOINC|

Concept
t705110001 |LOINC Term to Expression reference set|

Concept
t705114005 |LOINC Code System|

59878-9363787002:370134009=123029007,704327008=258459007,704318007=118556004,246093002=273948005,370132008=30766002,704319004=31773000

Concept
t900000000000073002 |Sufficiently defined by necessary conditions definition status|

Concept
t447557004 |Exact match map from SNOMED CT source code to target code|


Concept
t705117003 |Originally in LOINC|

Concept
t705110001 |LOINC Term to Expression reference set|

Concept
t705114005 |LOINC Code System|

51921-5363787002:704318007=118539007,370134009=123029007,704326004=703765007,704327008=122592007,370132008=30766002,704319004=50863008,246093002=387067003

Concept
t900000000000073002 |Sufficiently defined by necessary conditions definition status|

Concept
t447557004 |Exact match map from SNOMED CT source code to target code|

Concept
t705117003 |Originally in LOINC|

Related Links

...

Specref
treferencedComponentId

...

Specref
RefTypedata type
tSCTID

...

A reference to a SNOMED CT metadata concept referring to the code system containing the

Gloss
tother-codes
t:other-codes
. This is a subtype of
Concept
ShowPartsterm
t705113004 Terminology system
.

...

Specref
tmapTarget

...

Specref
RefTypedata type
tString

...

The

Gloss
tother-code
t:other-codes
associated with the SNOMED CT expression.

Specref
texpression

...

Specref
RefTypedata type
tString

...

Gloss
tSNOMED CT expression
 that represents the SNOMED CT definition of the 
Gloss
tother-code
t:other-codes
. This expression may be a 
Gloss
tstated
GlosTermstated view
 or 
Gloss
tinferred view
 of the definition provided that documentation of each identified reference set specifies the view provided.

The expression must conform to the syntax defined in the SNOMED CT Compositional Grammar - Specification and Guide (http://snomed.org/scg).

Specref
tdefinitionStatusId

...

Specref
RefTypedata type
tSCTID

...

Indicates whether or not the expression contains a sufficient definition of the

Gloss
tother-code
t:other-codes
in the mapTarget field.
Possible values are the following subtypes of
Concept
t900000000000444006 Definition status
:

 

Scg expression
ShowFormatinline
	900000000000074008 | Necessary but not sufficient concept definition status |
	  900000000000073002 | Sufficiently defined concept definition status |

...

Specref
tcorrelationId

...

Specref
RefTypedata type
tSCTID

...

The correlation between the SNOMED CT expression and the

Gloss
tother-code
t:other-codes
. Possible values are the following subtypes of
Concept
t447247004 SNOMED CT source code to target map code correlation value
:

 

Scg expression
ShowFormatinline
	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 |

Note

When these values are applied to this reference set type, the phrase "SNOMED source code" is interpreted as meaning "SNOMED expression" and "target code" refers to the

Gloss
tother-code.
t:other-codes
.

...

Specref
tcontentOriginId

...

Specref
RefTypedata type
tSCTID

...

Gloss
tother-codes
t:other-codes

...