You always have free action under all circumstances. You may not have freedom from the consequences of your actions, but usually you will, unless you take a few specific verboten actions. To determine beyond a doubt what you have the right (as the laws are capricious, enforced by hard and jealous men), do something, then observe the consequences. This may seem rudimentary, but it matters, as many new rights are enshrined explicitly or intuitively via actions without precedent. This is how the legal system works also.<p>You can get a tattoo without repercussions from the law; you can amputate your arm without repercussions from the law. In special situations where you are pregnant, the law may cause repercussions to you under certain circumstances. From this, you can assume that you have an unlimited right to self-modification, though you do not have an unlimited right to modify fetuses, which law does not understand as being a part of your self. This right is not explicitly codified anywhere, though we implicitly understand it to be the case, even in extreme cases such as heavily pierced or tattooed people. I am not equating cosmetic actions with genetic modification, but the fundamental right of self modification is the same for both.