Traditionally, as Mdcastleman says, insurers would frequently deny coverage for the pre-existing condition to new policyholders, even those newly joining an existing employer-sponsored plan. (Although employers or other groups could purchase a plan that did not have such a limitation.)
The Health Insurance Portability and Accountability Act of 1996 (HIPAA, also known as Kennedy-Kassebaum) gave significant protections to those of us with pre-existing conditions such that insurers supplying a group plan could not refuse coverage for the PXC of a member for more than 12 months in most circumstances (sometimese 18). Moreover, if the condition had already been covered under other insurance plans, you could count that against the 12 months. So if your PXC had been covered for a long time, then the insurer had to cover it. But if there had been a gap in coverage of more than 63 days, then it wipes all your previous coverage from the record. Ergo, if you had a PXC, it was very important not to lose coverage for any significant time; if you did, you’d lose it for at least another year on top of that.
Note that this applies to group health plans like the ones you’d get through your employer or AARP, etc. Health plans you can purchase on the open market simply do not offer insurance to individuals with PXC’s, for the most part.
That is the effective state of the law today as well. Under the Affordable Care Act, however, insurers will no longer be permitted to discriminate on the basis of health status – any product they offer, they must offer it to everyone, and at the same price. But that part of the law does not go into effect until Jan. 1, 2014.
So, to review your brother’s case, it sounds like he would have been covered under your parents’ insurance through the pasage of HIPAA (at least if he went to college). If he got a job with insurance coverage before he turned 24, the existing coverage would count and the new group plan would not be permitted to deny coverage of the heart condition.
If your brother ever lost that job, the company decided to discontinue health coverage, or even if he wanted to start his own business he’d be in trouble. If he left but the employer still provided that coverage for its current employees, he could continue in the employer plan for up to two years under COBRA (The Consolidated Budget and Ombibus Reconciliation Act of 1985 – had to look the year up on that one).
One problem is that COBRA can be really expensive because the purchaser has to pay 102% of the cost of the premium. That’s not much if the employer merely bought the group plan and made the employees pay for it. But most employers that offer group health coverage also pay for it, at least in part. (This because it’s a cheap way to compensate employees – they get a tax benefit for purchasing health insurance, so a company can provide $5,000 more salary to an employee for $5,057 (extra $57 due to FICA), but $5,000 worth of health insurance for hundreds, maybe thousands, less, depending on their tax burden. The benefit to the employee is the same, so there’s no economic difference to her.)
Since employers subsidize the cost of insurance as well as providing an employee group to attract the insurer, if you have to go on COBRA you have to cover the whole cost that the company used to pay on your behalf. Especially if the company provided good insurance, you can have a huge out of pocket expense. (Obama pushed through a big COBRA subsidy a couple years ago which alleviated this problem to a very large degree for the last couple years, but I think it lapsed.)
Had your brother been unable or unwilling to pay for COBRA, or if he’d been unemployed/working somewhere without a health plan for more than two years, his coverage could lapse. And again, even if he got coverage again later, his new plan could then refuse to cover his PXC for up to a year and a half. Furthermore, COBRA’s only an option is the plan still exists, but the insured just isn’t in the group anymore. If the employer goes went out of business or just decided to discontinue the health plan, there would have been no recourse.
Had your brother been unable to find coverage in an employer or other group plan, he would have been likely uninsurable. Individually purchased health insurance plans are largely unavailable to anyone who has a PXC – or even had a major illness in the past which is now gone. This would only change were he to survive (tens of thousands of the uninsured die annually because of lack of access to care) until insurers lose the right to refuse coverage to the sick in 2014.
The flip side is that your brother would no longer be permitted to refuse to purchase insurance – everybody (sorta) has to have it. Those that have trouble affording insurance will be subsidized.
–Cliffy