OIDM organization code

The middle segment of an OIFM or OIFMA identifier, matching ^[A-Z]{3,4}$, naming the organization that minted the identifier. The generator builds an identifier by uppercasing the source code and appending six random digits, so the code is chosen by the authoring organization rather than assigned centrally.¹ The same value serves as an organization’s code and as a person’s organization_code in the contributor registry.²

Seven codes ship in the base registry.³

Code	Organization
GMTS	Radiology Gamuts Ontology
OIDM	Open Imaging Data Model
CDE	ACR/RSNA Common Data Elements Project
MGB	MassGeneral Brigham
MSFT	Microsoft
RSNA	Radiological Society of North America
ACR	American College of Radiology

Five of them appear in the published corpus of 2,382 definitions: GMTS on 1,933, OIDM on 256, CDE on 115, MGB on 47, and MSFT on 31.

Synonyms and near-synonyms

• Source code is the argument name in the identifier generator.
• Namespace and prefix are informal descriptions; the true prefix is OIFM_ or OIFMA_.
• The code is not a provenance record of who did the work. It records which organization’s namespace the identifier came from.

Identifier form

Three or four uppercase letters, embedded as OIFM_<CODE>_###### and OIFMA_<CODE>_######.

Where it is used

Identifiers and Content catalog.

Footnotes

1. OIFM and OIFMA identifier generation ↩

2. OrganizationCodeField pattern ↩

3. Base organization registry ↩