Catastrophic health insurance—also known as major medical insurance—is a policy of health insurance with a relatively high deductible, often as high as $500 or $1000. Although catastrophic health insurance policies offer coverage only beyond this high deductible amount, they can help people avoid bankruptcy in the event of a catastrophic illness or injury that requires expensive medical treatments. Because catastrophic health insurance policies have a high deductible, they typically charge policyholders relatively low monthly premiums.