Blog
A deeper dive into what's happening in the OCL community
September 28, 2026 · 5 min read
A letter to the OCL community
TermBrowser v3 and the OCL Mapper open in limited public preview, alongside OCL's first paid plans. Jonathan Payne on what's changing, why, and what stays free.
Jonathan Payne
June 9, 2026 · 3 min read
Advancing Automated LOINC Mapping in OCL Mapper Through Biomedical NLP
ScispaCy-LOINC, developed at Indiana University, found the right LOINC code for 42.3% of MIMIC-IV lab concepts vs 21.4% for semantic search. Published in JAMIA.
February 17, 2026 · 4 min read
A New Model for National Terminology Services: OCL and HL7 Brasil Announce Partnership
OCL and HL7 Brasil are partnering on a national terminology service for Brazil — open, FHIR-based and governed as Digital Public Infrastructure for Health.
Jussara Macedo Pinho Rötzsch and Jonathan Payne
February 5, 2026 · 11 min read
First year building The Bridge between clinical practice, software, and terminologies (OpenMRS + OCL + CIEL)
Dr. Filipe Lopes on a year as OpenMRS–CIEL–OCL Senior Fellow: 6k+ diagnoses translated into Portuguese, 30k+ CIEL mappings and an AI agent for ICD-11 coding.
Dr. Filipe Lopes
April 29, 2025 · 5 min read
Introducing the OCL Squad Model
OCL is moving to squads — small, self-organizing teams owning TermBrowser v3, FHIR Core, the OCL Mapper and more. There’s a place for you.
Jonathan Payne
February 24, 2025 · 1 min read
OCL is a Digital Public Good!
The Digital Public Goods Alliance has recognized OCL as a Digital Public Good, meeting all nine indicators of the DPG Standard.
February 4, 2025 · 3 min read
2025 OCL Community Roadmap
The 2025 roadmap, built with the community: launch TermBrowser v3 and the OCL Mapper (beta), support FHIR IG publishing, and grow the content in OCL Online.
October 23, 2024 · 5 min read
OCL puts its FHIR Core to the Test at the HL7 Connectathon
At the September 2024 HL7 FHIR Connectathon, OCL passed ~45% of the CRMI terminology tests, up from 34% in May. What worked, what didn’t and what’s next.
Joe Amlung and Rafal Korytkowski
October 16, 2024 · 5 min read
Insights and Future Directions from the OCL Community Survey
What the 2024 community survey told us: ICD-10, CIEL and LOINC lead usage, 86.7% want ICD-11 in OCL and FHIR matters to most users — and how it shapes 2025.
September 24, 2024 · 1 min read
Upcoming event: OCL Quarterly Showcase – Wednesday 9 October
The 9 October 2024 showcase: OCL fellow Julia Fuller on the NHDD Toolkit, and Ellen Ball of Partners In Health on bringing PIH’s OpenMRS content into OCL.
August 1, 2024 · 3 min read
NHDD Conceptual Framework & NHDD Use Cases
OCL fellow Julia Fuller maps NHDD use cases to each stage of the maturity model, starting with the International Patient Summary and IPS Brazil as a case study.
Julia Fuller
July 9, 2024 · 1 min read
Upcoming event: OCL Quarterly Showcase – Wednesday 17 July
The 17 July 2024 showcase: the quarter’s successes, upcoming priorities, and advisors from Kenya’s National Health Terminology Service, which publishes on OCL.
July 2, 2024 · 3 min read
Announcing the 2024 OCL Fellowship!
Meet Julia Fuller, first fellow of the new OCL Fellowship Program, spending the summer building a National Health Data Dictionary (NHDD) Toolkit with OpenHIE.
Jonathan Payne
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