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Each SCTID (data type) identifies a. Theitself aThe identifier itself does not contain information related to the meaning of aor. This aorThis means it is not possible to infer anything about the meaning of afrom the numeric value of theor the identifier or from the sequence of digits in that form of the identifer. The meaning of acan be determined fromto otherand from associatedthat include human readable terms.

The SCTID (data type) does  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:

• validation of the identifier.

  • 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 betweenfor between identifiers for different types of. anchor_aa354275-548c-4058-9bd0-8ac50216229c__2_aa354275-548c-4058-9bd0-8ac50216229c__2

  • 
    A two-digitdistinguishes theof the identifiers of different component types and prevents the samefrom same identifier from being allocated to both aand aAs a . As a result, when an SCTID (data type) is  is read from a record or other resource, it is possible to determine whether it represents a, aor a, before aaor abefore searching for the identified component.

• Namespaces to separate componentoriginated component identifiers originated by different organizations. Anchor_aa354275-548c-4058-9bd0-8ac50216229c__4_aa354275-548c-4058-9bd0-8ac50216229c__4 

  • Organizations are only permitted to issuewhich issue identifiers which fall within a specified namespace of potentialvaluespotential identifier values. This prevents collisions betweenissues 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. Anchor_aa354275-548c-4058-9bd0-8ac50216229c__a _aa354275-548c-4058-9bd0-8ac50216229c__a

    • Short format in whichare reserved for an organization which is permitted to issue any validwithin valid identifiers within the allocated partitions. The short format approach does not require a specificand is only applicable to components originated and maintained by theas part of theof.

    • Long format in which thevalue indicates that a separateis required to distinguish between components originated as part of ancreated by an appropriately authorized organization .

  Anchor_aa354275-548c-4058-9bd0-8ac50216229c__7_aa354275-548c-4058-9bd0-8ac50216229c__7 Anchor_aa354275-548c-4058-9bd0-8ac50216229c__f_aa354275-548c-4058-9bd0-8ac50216229c__f  

  Figure 281. SCTID Short Format - Applicable to components originating from the International Release

  Anchor_aa354275-548c-4058-9bd0-8ac50216229c__9_aa354275-548c-4058-9bd0-8ac50216229c__9 

  Figure 292. SCTID Long Format - Applicable to components originating from a SNOMED CT Extension

  Info

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

  ...

  anTheenables unique SCTID to be issued by many organizations and allow

  ...

  each SCTID to be traced to an authorized originating organization.