# Search by Identifiers

Searching by SNOMED CT identifier either as a Concept Identifier or a Description Identifier is useful in scenarios where the user knows the SNOMED CT Concept or Description they require.

It is useful in use cases for browsers, but is not an appropriate way to search in clinical applications. As a general rule the default behavior of clinical application should not display identifiers and users should never be expected to remember, type or cut-and-paste identifiers for data entry.

<a href="https://docs.google.com/forms/d/e/1FAIpQLScTmbZIf0UEQwYDkY27EEWBkaiYkHSbR0_9DmFrMLXoQLyL7Q/viewform?usp=pp_url&#x26;entry.1767247133=Search+And+Data+Entry+Guide&#x26;entry.670899847=4.2.%20Search%20by%20Identifiers" class="button primary">Provide Feedback</a>


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# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.snomed.org/snomed-ct-practical-guides/snomed-ct-search-and-data-entry-guide/4-optimizing-searches/4.2-search-by-identifiers.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.