F51 - Sleep disorders not due to a substance or known physiological condition
F51.1 - Hypersomnia not due to a substance or known physiological condition
Excludes 2:
-alcohol related hypersomnia F10.182,F10.282,F10.982)
-drug-related hypersomnia F11.182,F11.282,F11.982,F13.182,F13.282,F13.982,F14.182,F14.282,F14.982,F15.182,F15.282,F15.982,F19.182,F19.282,F19.982)
-hypersomnia NOS G47.10)
-hypersomnia due to known physiological condition G47.10)
-idiopathic hypersomnia G47.11,G47.12)
-narcolepsy G47.4-)
F51.11 - Primary hypersomnia
F51.12 - Insufficient sleep syndrome
F51.13 - Hypersomnia due to other mental disorder
F51.19 - Other hypersomnia not due to a substance or known physiological condition