HL7 Object Identifier (OID)

HL7 maintains an OID Registry of globally unique ISO (International Organization for Standardization) identifiers. We have officially registered an OID in order to serve as an authority for OIDs within this namespace.

Official OpenMRS OIDs

OIDDescriptionExample
2.16.840.1.113883.3.7194Root OID for OpenMRS. 
2.16.840.1.113883.3.7194.1OpenMRS Implementation Identifier.
<id root="2.16.840.1.113883.3.7194.1" extension="AMPATH" /> 

Where "AMPATH" is the implementation ID.

2.16.840.1.113883.3.7194.2OpenMRS Patient identifier
<id root="2.16.840.1.113883.3.7194.2" extension="1234-4" />

Where "1234-4" is a patient identifier within an OpenMRS implementation.

Note that we do not define separate OIDs for every identifier type. If needed, the identifier type could be specified within the extension.

2.16.840.1.113883.3.7194.3OpenMRS User identifier
<id root="2.16.840.1.113883.3.7194.3" extension="1234-4" />

Where "1234-4" is a user's identifier (e.g., system ID) within an OpenMRS implementation.

Note that we do not define separate OIDs for every identifier type. If needed, the identifier type could be specified within the extension.

2.16.840.1.113883.3.7194.4OpenMRS Provider identifier
<id root="2.16.840.1.113883.3.7194.4" extension="1234-4" />

Where "1234-4" is a provider's identifier within an OpenMRS implementation.

Note that we do not define separate OIDs for every identifier type. If needed, the identifier type could be specified within the extension.

OpenMRS-related OIDs

OIDDescriptionExample
2.16.840.1.113883.3.7201MVP-CIEL Concept Dictionary (aka the "CIEL" dictionary)
<code code="159640" codeSystem="2.16.840.1.113883.3.7201" codeSystemName="CIEL" displayName="Patient health status" />