All Global Goods

Open Concept Lab

Open Concept Lab (OCL) is an open source, FHIR-enabled health terminology management system. OCL facilitates the collaborative management, publication, and use of custom medical terminology resources such as diagnoses, observations, lab measurements, reporting indicators, and more. OCL also provides access to standardized reference terminologies like the International Classification of Diseases (ICD) and is a primary distributor of the Columbia International eHealth Laboratory (CIEL) interface terminology.

Organizations use OCL to serve as a central source of truth for data standards and definitions, supporting the normalization of clinical data to achieve semantic interoperability. Common use cases include using OCL as a foundation for a national health data dictionary, building FHIR value sets and concept maps, or managing a concept dictionary for an electronic medical record like OpenMRS. OCL is designed to be used in a shared, cloud-based environment alongside the global community or as a self-hosted architectural component within an organization’s data exchange architecture.

OCL targets three user personas: 1. A Terminology Publisher manages and publishes original terminology resources, leveraging and mapping to reference vocabularies and other user-generated content. 2. A Terminology Implementer adapts and repackages terminology resources from terminology publishers, such as WHO DDCC/SMART Guidelines or CIEL, based on local implementation needs, e.g. by adding a local dialect or mapping to local codes. 3. A Terminology Consumer searches, compares, and exports terminology resources that are relevant to his/her project(s) to achieve a better understand of concepts, to use the right codes, and to navigate relationships between terms.

OCL Online serves users across the globe, with larger ongoing or emerging implementations in Bangladesh, Dominica, Ethiopia, Haiti, India, Malawi, Uganda, and United States. Self-hosted implementations of OCL include Kenya and Chile. Several organizations with global reach also use OCL, including WHO, CDC, and PEPFAR.

Software Application

Mozilla Public License v2.0

WHO System Classification

C11 | C11 Terminology and classification systems

Geographic Reach & Impact

Standards & Interoperability

CIEL, HL7 FHIR, ICD-10, ICD-11, ICD-9, LOINC, Other, SNOMED

Point of service

Resources

Community

Linked Registries & Initiatives