I came across a patient that receives the depo shot. She is a developmentally delayed woman who has a past history of being assualted. As a result of the assualt, she now becomes violent when she starts her mentrual cycle. She now receives the depo shot in order to stop or supress her cycle. What would be the appropriate dx code in this situation. She does not get the shots for contraception and she does not have a menstrual disorder. This seems in my opinion more psychological. Any ideas?