| Defining URL | http://terminology.hl7.org/NamingSystem/IETF1766 |
| Version | 2.1.0 |
| Name | IETF1766 |
| Title | IETF RFC 1766 |
| Status | retired |
| Definition | Codes representing languages for which a person has some level of proficiency for written or spoken communication. Examples: Spanish, Italian, German, English, American Sign, etc. |
| Type | Value | Preferred |
| OID | 2.16.840.1.113883.6.84 | true |
| URI | http://terminology.hl7.org/CodeSystem/IETF1766 | true |