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GET
/
versions
List MedDRA versions
curl --request GET \
  --url https://api.meddra.co/versions
[
  {
    "version": "28.1",
    "isLatest": true,
    "counts": {
      "SOC": 27,
      "HLGT": 337,
      "HLT": 1735,
      "PT": 23890,
      "LLT": 81000
    },
    "changes": {
      "added": 124,
      "updated": 57,
      "retired": 6
    },
    "releaseDate": "2025-10-21T19:28:18.141Z"
  }
]
Use this endpoint to power version dropdowns or release selectors in your UI.

Headers

​
X-API-Version
string
default:1

Override the default API version. Defaults to 1.

Example:

"1"

Response

List of available MedDRA releases.

​
version
string
required
Example:

"28.1"

​
isLatest
boolean
required
Example:

true

​
counts
object
required

Total number of MedDRA terms per hierarchy level.

​
changes
object
required

Aggregate counts of additions, updates, and retirements in this release.

​
releaseDate
string<date-time> | null
Example:

"2025-10-21T19:28:18.141Z"