The Medical Cost Ratio (MCR) is calculated by which of the following formulas?

The Medical Cost Ratio (MCR) is indeed calculated using the formula that involves dividing total medical expenses by total premiums. This formula is essential as it assesses the efficiency and effectiveness of a health insurer in utilizing its premiums to cover medical costs. The MCR indicates what portion of premium income is being spent directly on medical services for members, reflecting the insurer's commitment to healthcare provision versus administrative costs and profits.

In practice, a lower MCR suggests that a higher percentage of premiums is being used for patient care rather than overhead, aligning with consumer interests in maximizing healthcare value. Therefore, focusing on the relationship between medical expenses and premiums reveals the core functionality of MCR in evaluating health insurance operations.