ORGANIC SLEEP DISORDERS (ICD 9 CODES: 327)
327 Organic sleep disorders
327.0 Organic disorders of initiating and maintaining sleep [Organic insomnia]
Excludes: insomnia NOS (780.52)
insomnia not due to a substance or known physiological condition (307.41-307.42)
insomnia with sleep apnea NOS (780.51)
327.00 Organic insomnia, unspecified
327.01 Insomnia due to medical condition classified elsewhere
Code first underlying condition
Excludes: insomnia due to mental disorder (327.02)
327.02 Insomnia due to mental disorder
Code first mental disorder
Excludes: alcohol induced insomnia (291.82)
drug induced insomnia (292.85)
327.09 Other organic insomnia
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
327.2 Organic sleep apnea
Excludes: Cheyne-Stokes breathing (786.04)
hypersomnia with sleep apnea NOS (780.53)
insomnia with sleep apnea NOS (780.51)
sleep apnea in newborn (770.81-770.82)
sleep apnea NOS (780.57)
327.20 Organic sleep apnea, unspecified
327.21 Primary central sleep apnea
327.22 High altitude periodic breathing
327.23 Obstructive sleep apnea (adult) (pediatric)
327.24 Idiopathic sleep related nonobstructive alveolar hypoventilation
Sleep related hypoxia
327.25 Congenital central alveolar hypoventilation syndrome
327.26 Sleep related hypoventilation/hypoxemia in conditions classifiable elsewhere
Code first underlying condition
327.27 Central sleep apnea in conditions classified elsewhere
Code first underlying condition
327.29 Other organic sleep apnea
327.3 Circadian rhythm sleep disorder
Organic disorder of sleep wake cycle
Organic disorder of sleep wake schedule
Excludes: alcohol induced circadian rhythm sleep disorder (291.82)
circadian rhythm sleep disorder of nonorganic origin (307.45)
disruption of 24 hour sleep wake cycle NOS (780.55)
drug induced circadian rhythm sleep disorder (292.85)
327.30 Circadian rhythm sleep disorder, unspecified
327.31 Circadian rhythm sleep disorder, delayed sleep phase type
327.32 Circadian rhythm sleep disorder, advanced sleep phase type
327.33 Circadian rhythm sleep disorder, irregular sleep-wake type
327.34 Circadian rhythm sleep disorder, free-running type
327.35 Circadian rhythm sleep disorder, jet lag type
327.36 Circadian rhythm sleep disorder, shift work type
327.37 Circadian rhythm sleep disorder in conditions classified elsewhere
Code first underlying condition
327.39 Other circadian rhythm sleep disorder
Excludes: alcohol induced parasomnia (291.82)
drug induced parasomnia (292.85)
parasomnia not due to a known physiological condition (307.47)
327.40 Organic parasomnia, unspecified
327.41 Confusional arousals
327.42 REM sleep behavior disorder
327.43 Recurrent isolated sleep paralysis
327.44 Parasomnia in conditions classified elsewhere
Code first underlying condition
327.49 Other organic parasomnia
327.5 Organic sleep related movement disorders
Excludes: restless legs syndrome (333.94)
sleep related movement disorder NOS (780.58)
327.51 Periodic limb movement disorder
Periodic limb movement sleep disorder
327.52 Sleep related leg cramps
327.53 Sleep related bruxism
327.59 Other organic sleep related movement disorders
327.8 Other organic sleep disorders
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