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Medical loss ratio (MLR)

The share of health insurance premiums spent on medical care and quality improvement.

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What does Medical loss ratio (MLR) mean?

The medical loss ratio is a health insurer's spending on claims and on activities that improve care quality, divided by premiums. The rest pays for administration, marketing and profit. In the United States, the Affordable Care Act requires insurers to spend at least 80 percent of premiums on care in the individual and small-group markets and 85 percent in the large-group market, or pay rebates to customers. Example: an insurer collecting 1,000 per member and spending 860 on care has an MLR of 86 percent, leaving 140 for everything else. For investors, a rising MLR usually signals higher use of care and lower profit.

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