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Glossary ref
Read Codes
and
Glossary ref
Clinical Terms Version 3
codes are present in
Glossary ref
SNOMED CT
in the
Scg expression
ShowPartsid+term
900000000000497000|CTV3 simple map reference set|
which links the old alphanumeric codes to the
Glossary ref
SNOMED CT concept identifiers
. For further information see the specification of Simple map reference sets .

The

Scg expression
ShowPartsid+term
900000000000497000|CTV3 simple map reference set|
can be used either to allow recognition of legacy data by
Glossary ref
SNOMED CT
retrieval tools or to enable mapping of the codes and storage of the appropriate
Glossary ref
Concept Identifier
.

Attention: Organizations based in the UK that are planning to migrate from NHS

Glossary ref
Clinical Terms Version 3
or earlier versions of the
Glossary ref
Read Codes
are advised to review the documentation and mapping tables published by the
Glossary ref
UK NHS
. These resources support more sophisticated mapping based on use of terms and patterns of use that meet UK requirements. Separate advisory documents and tables for each of the
Glossary ref
Read Code
versions are available as part of the NHS Terminology Reference Data Update Distribution Service (TRUD) https://www.uktcregistration.nss.cfh.nhs.uk/trud/. These materials are updated with each
Glossary ref
SNOMED CT
UK
Glossary ref
Extension
Glossary ref
Release
.


Anchor
fntarg_1
fntarg_1
[1 A "Legacy code system" is code system used prior to implementation of SNOMED CT.