DirectTrust IalCode Code System

The system of codes to express identity authentication levels defined by DirectTrust.

Canonical URL	http://objects.directtrust.org/standards/terminology/CodeSystem/IalCodeCS
Name	IalCodeCodeSystem
Status	active
Date	2026-11-05
Publisher	DirectTrust

Raw JSON · Terminology Server

Concepts

Code	Display
loa1	DirectTrust LoA 1
loa2	DirectTrust LoA 2
loa3	DirectTrust LoA 3
ial1	DirectTrust IAL 1
ial2	DirectTrust IAL 2
ial3	DirectTrust IAL 3

Full Resource

{
  "resourceType": "CodeSystem",
  "url": "http://objects.directtrust.org/standards/terminology/CodeSystem/IalCodeCS",
  "name": "IalCodeCodeSystem",
  "title": "DirectTrust IalCode Code System",
  "status": "active",
  "date": "2026-11-05",
  "publisher": "DirectTrust",
  "description": "The system of codes to express identity authentication levels defined by DirectTrust.",
  "content": "complete",
  "count": 6,
  "concept": [
    {
      "code": "loa1",
      "display": "DirectTrust LoA 1"
    },
    {
      "code": "loa2",
      "display": "DirectTrust LoA 2"
    },
    {
      "code": "loa3",
      "display": "DirectTrust LoA 3"
    },
    {
      "code": "ial1",
      "display": "DirectTrust IAL 1"
    },
    {
      "code": "ial2",
      "display": "DirectTrust IAL 2"
    },
    {
      "code": "ial3",
      "display": "DirectTrust IAL 3"
    }
  ],
  "identifier": [
    {
      "system": "urn:ietf:rfc:3986",
      "value": "urn:oid:1.3.6.1.4.1.41179.4.1.9"
    }
  ],
  "id": "IalCodeCS"
}