The first release of the Clinical Observations Recording and Encoding (CORE)  subset is complete and will help facilitate the use of Systematized Nomenclature of Medicine—Clinical Terms (SNOMED CT) for coding problem list data in Electronic Health Records (EHRs), as well as use of EHRs to improve patient safety, health care quality, and the exchange of health information.

The CORE Problem List Subset of SNOMED CT was derived based on datasets submitted by seven large scale healthcare institutions and contains nearly 5,000 SNOMED CT concepts. The subset is available for download.

A free Unified Medical Language System (UMLS) Metathesaurus license (which includes the IHTSDO Affiliate license) is required, and can be downloaded from this same site.

The International Health Terminology Standards Development Organization (IHTSDO) develops and maintains international health terminology, notably SNOMED CT, to support the safe, accurate, and effective exchange of health information. The NLM is the U.S. member of IHTSDO.

Use of SNOMED CT is free in IHTSDO member countries, including the United States, in low-income countries, and for approved research projects in any country.