Metadata Files

These files provide standardized ways of providing users with Metadata regarding the Release Package and the SNOMED CT components contained therein.

"release-package-information.json" file

These files are located in the top-level directory of the SNOMED CT Release packages, and contain various information related to the specific Release package in which they reside.

release-package-information-.json file - Detailed Specification

Field
Data Type
Purpose

effectiveTime

String

Specifies the inclusive date at which the package has been versioned

Note : In distribution files the effectiveTime should follow the short ISO date format (YYYYMMDD)

previousPublishedPackage

String

The name of the last Release package to have been published for this specific SNOMED CT Product

licenceStatement

String

The licence statement that applies to this particular version of the Product, and which must be adhered to when using the package.

languageRefsets

String

Details of all language refsets included within the package (eg) { "id": "900000000000508004", "term": "Great Britain English language reference set" }, { "id": "900000000000509007", "term": "United States of America English language reference set" }

packageComposition

String

essentialComponents

String

Any information useful to the users, regarding components that are a mandatory part of each version of the package.

optionalComponents

String

Bespoke fields can be created in this section in order to provide users with any additional information that may be specific about this particular Product, especially in regard to components that might (but don't have to) be included in each version of the package. See below for examples:

MapDirectionality

String

States which direction each map file is mapped in (eg) SNOMED to external product, or external product to SNOMED

SNOMEDMapSource

String

The version of SNOMED CT that the map is based upon (eg) SNOMED CT version 20250701, released July 2025

externalMapSource

String

The version of the external product upon which the map is based (eg) Orphanet version July 2025

dependency

String

The external product version upon which this package is dependent

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