...

• There are several types of mapping reference set each of these supports different types of mapping.
  • Simple Map Reference Sets support one-to-one maps to or from SNOMED CT.
  • Complex and Extended Map Reference Sets support maps where additional information is required to determine the correct mapping from SNOMED CT to a statistical classification such as 

    Gloss
    t ICD-10

    .
  • Map Correlation and Origin Reference Sets support maps to or from another code system where there is an additional requirement to record cases in which a code in one code system was added specifically for the purpose of enabling a map from the codes system in which the code originated.
  • Code to Expression Reference Sets support maps from other code systems in cases where some or all the source codes may need to be represented by a 

    Gloss
    t postcoordinated expression

    .

...

Related Links

• Glossary

  • Gloss
    t mappingMapping

  • Gloss
    t postcoordinated Postcoordinated expression

• Release File Specification
  • 5.2.9 Simple Map Reference Set
  • 5.2.3.10 3 Complex and Extended Map from SNOMED CT Reference Sets
  • 5.2.14 Map 3.4 Map to SNOMED CT with Correlation and Origin Reference Set
  • 5.2.15 3.5 Code to Expression Reference Set
• Specific Mapping Guides
  • DOCICD10