Purpose

A

Concept
t 447250001 |Complex map from SNOMED CT type reference set | ShowFormat inline

enables representation  supports the representation of maps where each

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may map to one or more codes in a

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. The This type of

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supports the general set of mapping data required to enable a

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to be selected at run-time from a number of alternate codes. It supports

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selection by accommodating the inclusion of machine readable rules and/or human readable advice. An

Concept
t 609331003|Extended map from SNOMED CT type reference set| ShowFormat inline

adds  adds an additional field to allow the categorization of maps.

Data structure

A

Concept
t 447250001 |Complex map from SNOMED CT type reference set

is

| ShowFormat inline

 is an Integer - Integer -

Specref
RefType (data type) t String

-

Specref
RefType (data type) t String

-

Specref
RefType (data type) t String

-

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. The pattern is currently used for the map to ICD-9-CM. Its structure is as shown in the following table, with one exception - the table below includes an additional field (

Specref
RefType (field) t mapCategoryId

) which is not used for this type of map.

An 

Concept
t 609331003 |

An

Extended map type reference set (foundation metadata concept)|

follows the same pattern but adds one additional column. It is an Integer - Integer -

Specref
RefType (data type) t String

-

Specref
RefType (data type) t String

-

Specref
RefType (data type) t String

-

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 -

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and this pattern is currently used for maps to ICD-10. Its structure is shown in the following table, and includes the

Specref
RefType (field) t mapCategoryId

.

Caption label
CapId complex-and-extended-map-reference-sets-data-structures CapType Table
Complex and Extended map from SNOMED CT type reference sets - Data structures

...

For more details on this topic in relation to the ICD-10 maps released as part of the SNOMED CT International Edition please see the  ICD-10 Mapping Technical Guide

Mapping Rule Specifications

The specific grammar and content of the rules for resolving complex mapping cases depends on the nature of the 

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system or classification. In general, each map is accompanied by a rule which is tested against other data and can be evaluated to return one of the following values:

...

Detailed definitions of the mapping rules used forms part of individual specifications for maps to particular 

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systems and classifications. This will initially be provided separately and will accompany the release of the relevant mapping files. For example, the set of rules used for mapping to 

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are included in the  ICD-10 Mapping Technical Guide.

Metadata

The following metadata supports this

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:

Caption label
CapId complex-map-references-sets-in-the-metadata-hierarchy CapType Table
Complex and Extended Map from SNOMED CT References Sets in the Metadata Hierarchy

...

Scg expression
Border ridge
900000000000454005 |Foundation metadata concept| 900000000000455006 |Reference set| 447250001 |Complex map |Complex map from SNOMED CT type reference set| 609331003 |Extended map from SNOMED CT type reference set|

Excerpt Include
REUSE:Notes on Reference Set Example Tables REUSE:Notes on Reference Set Example Tables nopanel true

Descriptor Templates

The tables below examples of the descriptors for specific

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that follow the

Concept
t 447250001|Complex map type reference set| ShowFormat inline

and

Concept
t 609331003|Extended map type reference set| ShowFormat inline

patterns.

...

Caption label
CapId refset-descriptor-rows-for-a-complex-map-reference-set- CapType Table
Refset Descriptor Rows for a Complex Map from SNOMED CT Reference Set

...

Caption label
CapId refset-descriptor-rows-for-an-extended-map-reference-set- CapType Table
Refset Descriptor Rows for an Extended Map for an Extended Map from SNOMED CT type Reference Set

Example Data

Caption label
CapId sample-content-from-an-extended-map-reference-set CapType Table
Sample Content from an Extended Map from SNOMED CT Reference Set

Related Links

• ICD-10 Mapping Technical Guide

...