The Current Prescribable Content (CPC) subset of RxNorm provides content from RxNorm for satisfying this requirement. Each monthly release of the CPC subset contains the names and codes for those drugs that the NLM believes to be currently available on the US market. This includes both National Drug Codes (NDCs) and RxNorm Concept Unique Identifiers (RxCUIs). The CPC is limited to content produced or derived by the NLM, eliminating intellectual property considerations associated with using the full monthly RxNorm dataset.
For information on discontinued/obsolete drugs, or to map RxNorm codes to and from codes from other drug information sources, a user will need to consult the full RxNorm dataset.

The CORE (Clinical Observations Recording and Encoding) Problem List Subset identifies important clinical concepts in SNOMED CT that occur frequently in the problem list. It facilitates the use of SNOMED CT for clinical documentation at the summary level.

In September 2010, Kaiser Permanente donated their CMT content and tooling to the IHTSDO. The CMT subset is a set of over 75,000 clinician and patient-friendly medical concepts that are linked to US and international interoperability standards.

The main purpose of the Nursing Problem List Subset of SNOMED CT is to facilitate the use of SNOMED CT as the primary coding terminology for nursing problems used in care planning, problem lists or other summary level clinical documentation.

This is a collection of the top 300+ most common universal laboratory order codes for use by developers of order entry systems that deliver them in HL7 messages to laboratories, where they could be understood and fulfilled. This value set is designed to cover greater than 95% of the test ordering volume in the US, and was developed with both empirical and consensus-driven approaches. This list is referenced by the HITSP C80 Clinical Document and Messaging Terminology Construct in Table 2-96 "Laboratory Order Value Set" where it states that it "should be considered a minimum “starter” set" and "does not attempt to include all possible LOINC codes" or all possible lab orders.

This is an empirically-based list of the most common LOINC result codes for laboratories, practices, researchers, and others who wish to map their laboratory test codes to universal LOINC codes. Knowing that relatively few codes account for much of the result volume, we think that the Top 2000+ list will be an excellent starter set. This list contains 2017 most commonly reported LOINC codes that represent about 98% of the test volume carried by three large organizations that mapped all of their laboratory tests to LOINC codes. To jump start your mapping effort, check out the Mapper's Guide to the Top 2000+ Lab Tests. It contains a wealth of advice and guidance about which codes to choose for a given purpose.

This file is an export of a key subset of the Panels and Forms represented in LOINC. The entire package of this key subset is currently available at http://loinc.org/downloads/accessory-files, in addition to separate packages for Laboratory panels, Clinical panels, Consumer Health panels, HEDIS panels, the HL7 Clinical Genetics panels, Newborn Screening panels, PhenX panels, US Government panels (including the CMS survey instruments MDSv2, MDSv3, OASIS, and CARE), and Other Survey Instruments. The hierarchical structure is represented in the file by the PARENT_ID, ID and SEQUENCE fields. The root, or top level, records in the file are those records where the PARENT_ID = ID. The records are in a Microsoft Excel spreadsheet (compressed as a zip file) with separate worksheets (tabs) for the form structure, LOINC code details, and answer lists.