The sometimes dramatic increases in contributions to private health insurance (PKV) are a constant excitement. In fact, many providers often did not bother to give sufficient reasons, especially in earlier years. They were often content with a few sentences. In mid-December, the Federal Court of Justice (BGH) declared some premium increases to be ineffective. With this supreme court ruling, millions of insured persons may be entitled to a part of their contributions. They have to do that for it.