327: Organic sleep disorders
327.1 Organic disorder of excessive somnolence [Organic hypersomnia]
Excludes:
hypersomnia NOS (780.54)
hypersomnia not due to a substance or known physiological condition (307.43-307.44)
hypersomnia with sleep apnea NOS (780.53)
327.10: Organic hypersomnia, unspecified
327.11: Idiopathic hypersomnia with long sleep time
327.12: Idiopathic hypersomnia without long sleep time
327.13: Recurrent hypersomnia
Kleine-Levin syndrome
Menstrual related hypersomnia
327.14: Hypersomnia due to medical condition classified elsewhere
Code first underlying condition
Excludes:
hypersomnia due to mental disorder (327.15)
327.15: Hypersomnia due to mental disorder
Code first mental disorder
Excludes:
alcohol induced insomnia (291.82)
drug induced insomnia (292.85)
327.19: Other organic hypersomnia
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