A code set published in HL7 as a related concept with associated code values is known as what?

A code set published in HL7 as a related concept with associated code values is known as an external code set. This designation indicates that the code set is not only defined within the HL7 framework but also synchronized with other external standards and terminologies used across different health information systems. External code sets serve to facilitate interoperability among various systems by standardizing the meanings and values used to describe clinical concepts, such as diagnoses, procedures, and medications.

This is crucial in healthcare data exchange, as it allows for consistent communication of information across organizations and applications. With external code sets, different systems can understand and process the same data reliably, thereby enhancing data quality and reducing ambiguities that can arise from disparate coding practices.

The term "external" implies that these code values are endorsed and recognized beyond the local organization's system, providing greater cohesion and integration when sharing data with other entities across the healthcare landscape.