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UMLS API Technical Documentation

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API Terms of Service

Retrieving Source-Asserted Attributes

URIs | Query Parameters | Sample Output

URIs with /attributes support the following use cases:

Note that ‘current’ in the URI can always be used to search against the latest UMLS publication.
You may use any valid UMLS release back to 2008AA in your URI if you would like to search against a particular version of the UMLS.

URIs

The base URI is https://uts-ws.nlm.nih.gov/rest

Sample URI Description Returned JSON Object classType
/content/current/source/SNOMEDCT_US/9468002/attributes Retrieves attributes of the SNOMED CT concept Attribute

Query Parameters

Parameter name Required? Y/N Description Valid Values Default value Usage Note
apiKey Y An API key is required for each call to the API. Visit your UTS profile to obtain your API key. n/a n/a n/a
pageNumber N Whole number that specifies which page of results to fetch. 1,2,3, etc 1 n/a
pageSize N Whole number that specifies the number of results to include per page. 1,2,3, etc 25 n/a
includeAttributeNames N One or more attribute names Any attribute name in the UMLS n/a Use a comma between each attribute name to specify more than one.

Sample Output

Sample output for https://uts-ws.nlm.nih.gov/rest/content/current/source/SNOMEDCT_US/9468002/attributes?apiKey=YOUR_APIKEY…

{
    "pageSize": 25,
    "pageNumber": 1,
    "pageCount": 1,
    "result": [
        {
            "classType": "Attribute",
            "ui": "AT176854308",
            "sourceUi": "NONE",
            "rootSource": "SNOMEDCT_US",
            "name": "ACTIVE",
            "value": "1"
        },
        {
            "classType": "Attribute",
            "ui": "AT23334589",
            "sourceUi": "NONE",
            "rootSource": "SNOMEDCT_US",
            "name": "CTV3ID",
            "value": "S240."
        },
        {
            "classType": "Attribute",
            "ui": "AT176369162",
            "sourceUi": "NONE",
            "rootSource": "SNOMEDCT_US",
            "name": "DEFINITION_STATUS_ID",
            "value": "900000000000073002"
        },
        {
            "classType": "Attribute",
            "ui": "AT200386286",
            "sourceUi": "NONE",
            "rootSource": "SNOMEDCT_US",
            "name": "EFFECTIVE_TIME",
            "value": "20020131"
        },
        {
            "classType": "Attribute",
            "ui": "AT23558435",
            "sourceUi": "NONE",
            "rootSource": "SNOMEDCT_US",
            "name": "SNOMEDID",
            "value": "DD-12410"
        }
    ]
}