Definition: Health insurance catastrophic refers to a situation where an individual experiences significant financial losses or negative health outcomes as a result of an unexpected event, which was not covered by their existing policy. This can include medical procedures, surgeries, treatments, or other types of healthcare costs that were not specifically included in the original plan. For example, if an individual's primary insurance coverage only covers catastrophic events like heart attacks and strokes, but they have a significant underlying health condition that makes them more likely to suffer from these conditions due to their age and medical history, then the catastrophic event would be considered as the one that led to the loss or worsening of the individual's health. Understanding the term 'health insurance catastrophic' is important for individuals who are considering whether or not to enroll in a new health insurance plan, as it can guide them on which type of coverage is best suited for their specific needs and circumstances.