Final answer:
RVUs, particularly work RVUs, are examined and revised per statute at least once every five years by CMS to ensure Medicare reimbursement rates remain accurate and reflective of current medical practice conditions.
Step-by-step explanation:
The question pertains to the frequency with which relative value units (RVUs) for work are reviewed and adjusted according to statute. In the United States, the Centers for Medicare and Medicaid Services (CMS) is responsible for setting RVUs, which are a component of the Resource-Based Relative Value Scale (RBRVS) used to determine reimbursement rates for physicians and other healthcare providers under Medicare. By statute, CMS is required to review all work RVUs at least once every five years to ensure that payment rates remain accurate and reflect current standards of medical practice. This process involves analyzing the resources and time necessary to provide medical services, also accounting for the skill, effort, and judgment required. Thus, RVUs are regularly examined to keep the reimbursement system up-to-date and fair.