Release File Specification

Search

SNOMED CT Document Library

    Loading...

Versions Compared

Old Version 2

changes.mady.by.user David Markwell

Saved on

compared with

New Version Current

changes.mady.by.user David Markwell

Saved on

Key

  • This line was added.
  • This line was removed.
  • Formatting was changed.

Each SCTID

Specref
RefType(data type)
identifies aThe
tSCTID
identifies a
Gloss
PreSpacefalse
tSNOMED CT component.
The identifier itself does not contain information related to the meaning of aorThis a
Gloss
PreSpacefalse
tconcept
or
Gloss
PreSpacefalse
tdescription.
This means it is not possible to infer anything about the meaning of afrom a
Gloss
PreSpacefalse
tconcept
from the numeric value of the identifier or from the sequence of digits in that form of the identifer. The meaning of acan be determined fromto otherand from associatedthat a
Gloss
PreSpacefalse
tconcept
can be determined from
Gloss
PreSpacefalse
trelationships
to other
Gloss
PreSpacefalse
tconcepts
and from associated
Gloss
PreSpacefalse
tdescriptions
that include human readable terms.

The

Specref
RefType(data type)
tSCTID
 does however have a structure which includes valuable information about the nature and source of the identified component and the validity of the identifier. This structure supports the following features:

  • Gloss
    PreSpacefalse
    tCheck-digit
    validation of the identifier.

    • The

      Gloss
      PreSpacefalse
      tcheck-digit
      is Theis the final digit in the decimal rendering of the identifier. This can be checked to minimize errors from transcription or incomplete copy-paste actions.

  • Partitioning between identifiers for different types of

    Gloss
    PreSpacefalse
    tSNOMED CT component.

    • A two-digitdistinguishes digit

      Gloss
      PreSpacefalse
      tpartition identifier
      distinguishes the identifiers of different component types and prevents the same identifier from being allocated to both aand aAs a
      Gloss
      PreSpacefalse
      tconcept
      and a
      Gloss
      PreSpacefalse
      tdescription.
      As a result, when an
      Specref
      RefType(data type)
      tSCTID
       is read from a record or other resource, it is possible to determine whether it represents aaor abefore a
      Gloss
      PreSpacefalse
      tconcept,
      a
      Gloss
      PreSpacefalse
      trelationship
      or a
      Gloss
      PreSpacefalse
      tdescription,
      before searching for the identified component.

  • Namespaces to separate component identifiers originated by different organizations. 

    • Organizations are only permitted to issue identifiers which fall within a specified namespace of potential identifier values. This prevents collisions between identifiers issues by different organizations which would otherwise result in ambiguity and errors when sharing data.

    • There are two formats used for representing namespaces. 

      • Short format in whichare which

        Gloss
        PreSpacefalse
        tpartition identifiers
        are reserved for an organization which is permitted to issue any valid identifiers within the allocated partitions. The short format approach does not require a specificand specific
        Gloss
        PreSpacefalse
        tnamespace identifier
        and is only applicable to components originated and maintained by theas part of theofthe
        Gloss
        PreSpacefalse
        tSNOMED International
        as part of the
        Gloss
        PreSpacefalse
        tInternational Release
        of
        Gloss
        PreSpacefalse
        tSNOMED CT.

      • Long format in which thevalue the

        Gloss
        PreSpacefalse
        tpartition identifier
        value indicates that a separateis separate
        Gloss
        PreSpacefalse
        tnamespace identifier
        is required to distinguish between components originated as part of ancreated an
        Gloss
        PreSpacefalse
        textension
        created by an appropriately authorized organization .

  

Caption label

...

CapIdsctid-short-format-applicable-to-components-originating-from-the-international-release
CapTypeFigure
SCTID Short Format - Applicable to components originating from the International Release


 

Figure 2. SCTID Long Format - Applicable to components originating from a SNOMED CT Extension

Caption label
CapIdsctid-long-format-applicable-to-components-originating-from-a-snomed-ct-extension
CapTypeFigure
SCTID Long Format - Applicable to components originating from a SNOMED CT Extension
Info

The

Gloss
PreSpacefalse
tSNOMED International
allocates
Gloss
PreSpacefalse
tnamespace identifiers
to organizations such as
Gloss
PreSpacefalse
tMembers
and
Gloss
PreSpacefalse
tAffiliates
to

Info

Theallocatesto organizations such asandto enable them to create content and or derivatives in anTheenables unique SCTIDan

Gloss
PreSpacefalse
textension.
The
Gloss
PreSpacefalse
tnamespace identifiers
enables unique 
Specref
RefType(data type)
tSCTID
 to be issued by many organizations and allow each 
Specref
RefType(data type)
tSCTID
 to be traced to an authorized originating organization.

 

...