Z80-Z99: Persons with potential health hazards related to family and personal history and certain conditions influencing health status

Z81: Family history of mental and behavioural disorders

Mental illnesses include addictions and disorders involving big mood swings, for example. A behavioral disorder may be, for example, that someone behaves very conspicuously and endangers others in the process. With some mental illnesses and behavioral disorders there is an elevated risk that other family members might get ill.