Final answer:
DNV GL is the relatively new voluntary accreditation organization in healthcare, differing from governmental agencies such as AHRQ and established nonprofits like The Joint Commission.
Step-by-step explanation:
The voluntary accreditation organization that is relatively new to healthcare is DNV GL. Contrary to options like AHRQ, which is a governmental agency, and The Joint Commission, which is a well-established nonprofit organization, DNV GL represents a newer approach to healthcare accreditation, emphasizing continual improvements and quality management systems derived from industries outside of healthcare. Unlike ACOs, which focus on accountable care organizations in the healthcare system, DNV GL offers accreditation with a different perspective, incorporating international standards.