Hypersomnias of central origin not due to a circadian rhythm sleep disorder, sleep related breathing disorder, or other cause of disturbed nocturnal sleep(中枢性の過眠症、ただし概日リズム睡眠障害、睡眠時呼吸障害、夜間熟眠困難の他原因を除く)
Circadian rhythm sleep disorders (概日リズム睡眠障害)
Parasomnias (睡眠時随伴症)
Sleep related movement disorders(睡眠時運動障害)
Isolated symptoms, apparently normal variants, and unsesolved issues(独立した症候群、一見正常のように見ええるが解決できない問題を含んでいる)