Under traditional health care, preexisting conditions such as diabetes or asthma are often cause for denial of coverage at the worst, and exclusion of coverage for the coverage at best. This is one of the areas where the Affordable Care Act, or ACA, is supposed to help the American people.
Even more importantly, traditional health insurance laws for students may only provide a limited amount of care for all medical purposes. Instead being a complete type of health coverage, the plans may only include limited coverage for walk-in visits, or impose limits on how much medical care the plan will pay for in a year's time, or for a specific condition.
Under the new law, health insurance companies must provide coverage for preexisting conditions. Because millions of people are currently excluded from coverage because of preexisting conditions, the ACA is meant to make sure that all citizens have access to health care they can afford, even those with diabetes and other conditions.
This portion of the ACA will not become mandatory until 2014. Many insurance companies have already begun accepting people with preexisting conditions, and the one your college uses may or may not be one of them. The only way to find out is to speak with someone familiar with the company, such as a designated agent or someone in the university human resource department. If they do not yet provide coverage for diabetes, keep checking with the insurance company, because you will be able to reapply as soon as the company procedures are updated or in 2014 when the law is mandatory, whichever comes first.
If you are under the age of 26 and your parents have a health insurance plan, you can be covered under their plan until your 26th birthday. There is no guarantee that the plan your parent uses has begun accepting diabetes sufferers, but checking with them will at least increase your possible options.