Reference Code Systems and Value Sets

Rosetta maintains an up-to-date set of reference code systems (ICD10, SNOMED, LOINC, RxNorm, NDC, etc) and value sets (CCSR, MedRT, etc). Rosetta automatically refreshes itself with periodic updates (typically monthly) published by canonical data sources such as the National Library of Medicine, Regenstrief, AHRQ, CMS, NCQA, and the Veterans Administration. Current and historical code systems are maintained to enable organization of data longitudinally; e.g., historical problems may be coded in ICD9 while recent data is coded in ICD10.

In many situations, the healthcare data you have may not be coded in a standard or consistent manner; or may in fact not be coded at all. Leveraging experience across the entire installed base of HIEBus™ adopters–hospitals, labs, state HIEs, payers, and academic health centers–Rosetta uses advanced domain-specific algorithms to link raw source data–including uncoded free text–to known terminology code systems. For example: problems to ICD10 and SNOMED, labs to LOINC, and medications to RxNorm.

“Reference” value sets are maintained from a variety of sources including the code system publishers (e.g., LOINC, RxNorm), public programs (e.g., CMS), and quality/public health/population health organizations (e.g., AHRQ, CDC, NCQA). A value set will have a collection of codes from one or more reference code systems with a particular common meaning. Value sets have a ‘scope’ based on the publisher/program (e.g., CCSR Category, LOINC-Component), domain (e.g., COVID19), date (e.g., MeasureTerms_MY2020), and/or intended use (e.g., MedRT - May Treat). Value sets are used in terminology/classify and other Rosetta operations.