F51.1

Hypersomnia not due to a substance or known physiological condition

Non-billable header

F51.1 is a non-billable header code. Use one of the more specific codes below.

Inclusion terms

Not included here — may be reported together when both conditions exist.

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-)
symptoms, signs and abnormal clinical laboratory findings, not elsewhere classified (R00-R99) (from F51)
organic sleep disorders (G47.-) (from F51)

F51Sleep disorders not due to a substance or known physiological conditionHeader

F51.11Primary hypersomniaBillable
F51.12Insufficient sleep syndromeBillable
F51.13Hypersomnia due to other mental disorderBillable
F51.19Other hypersomnia not due to a substance or known physiological conditionBillable

F51.0Insomnia not due to a substance or known physiological conditionHeader
F51.3Sleepwalking [somnambulism]Billable
F51.4Sleep terrors [night terrors]Billable
F51.5Nightmare disorderBillable
F51.8Other sleep disorders not due to a substance or known physiological conditionBillable
F51.9Sleep disorder not due to a substance or known physiological condition, unspecifiedBillable