Health Language Blog

The Difference Between Intensional and Extensional Value Sets

Posted on 06/03/15 | Comments

Value sets, also referred to as code groups, help healthcare providers and payers define clinical concepts.

Each value set is essentially a bag of codes that can represent a particular disease or a type of medicine. A value set consists of terms and their associated numerical codes, which are taken from standard terminologies such as ICD-10, SNOMED CT®, RxNorm and LOINC®.  Value sets have a number of use cases. Those include creating Clinical Quality Measures (CQMs), defining a patient population cohort, defining decision support rules, and developing application pick lists.


Topics: value sets

How Code Groups are the Building Blocks of Important Health IT Initiatives

Posted on 12/29/14 | Comments

Code groups (also known as value sets ) are codes and terms taken from standard terminologies which are used to define clinical concepts.

In essence, code groups are collections of codes that represent such ideas as a category of drugs or a reportable disease. For example, a health system could group together all of the ICD-9, ICD-10, SNOMED-CT and RxNorm codes that could indicate patients with diabetes. In this case, “patients with diabetes” is the clinical concept defined by the code group.


Topics: Meaningful use requirements, code groups, value sets