> For the complete documentation index, see [llms.txt](https://docs.snomed.org/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.snomed.org/snomed-international-documents/snomed-ct-glossary/c/code.md).

# code

## code

## Disambiguation

* Meanings of the word *code* commonly used in connection with SNOMED CT and the services, applications and organizations that use SNOMED CT include:
  1. SNOMED CT concept identifiers and expressions used to represent clinical meanings may sometimes be informally referred to as "SNOMED codes".
  2. Codes in code systems or classifications that are used with or mapped to/from SNOMED CT.
  3. Software code written in a computer programming language (or compiled as machine executable code) that determines the operation of an application or device.
  4. Codes used to represent characters and symbols in computer storage and communication (e.g. UTF-8).
  5. Cryptographic codes used to support secure access to and/or communication of data.

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