| Defining URL | http://terminology.hl7.org/NamingSystem/ssn |
| Version | 1.0.0 |
| Name | SSN |
| Title | United States Social Security Number |
| Status | active |
| Definition | United States Social Security Number (SSN). Assigned by the U.S. Social Security Administration. Note: IRS assigned ITINs are often used as drop-ins for social security numbers. The SSN is represented in resources with dashes removed. See http://www.ssa.gov/. |
| Type | Value | Preferred |
| OID | 2.16.840.1.113883.4.1 | true |
| URI | http://hl7.org/fhir/sid/us-ssn | true |