327 Organic sleep disorders 
327.0 Organic disorders of initiating and maintaining sleep [organic insomnia] 
327.00 Organic insomnia, unspecified convert 327.00 to ICD-10-CM- 327.01 Insomnia due to medical condition classified elsewhere convert 327.01 to ICD-10-CM
- 327.02 Insomnia due to mental disorder convert 327.02 to ICD-10-CM
327.09 Other organic insomnia convert 327.09 to ICD-10-CM- 327.1 Organic disorder of excessive somnolence [organic hypersomnia]
- 327.10 Organic hypersomnia, unspecified convert 327.10 to ICD-10-CM
- 327.11 Idiopathic hypersomnia with long sleep time convert 327.11 to ICD-10-CM
- 327.12 Idiopathic hypersomnia without long sleep time convert 327.12 to ICD-10-CM
- 327.13 Recurrent hypersomnia convert 327.13 to ICD-10-CM
- 327.14 Hypersomnia due to medical condition classified elsewhere convert 327.14 to ICD-10-CM
- 327.15 Hypersomnia due to mental disorder convert 327.15 to ICD-10-CM
- 327.19 Other organic hypersomnia convert 327.19 to ICD-10-CM
- 327.2 Organic sleep apnea
- 327.20 Organic sleep apnea, unspecified convert 327.20 to ICD-10-CM
- 327.21 Primary central sleep apnea convert 327.21 to ICD-10-CM
- 327.22 High altitude periodic breathing convert 327.22 to ICD-10-CM
- 327.23 Obstructive sleep apnea (adult)(pediatric) convert 327.23 to ICD-10-CM
- 327.24 Idiopathic sleep related non-obstructive alveolar hypoventilation convert 327.24 to ICD-10-CM
- 327.25 Congenital central alveolar hypoventilation syndrome convert 327.25 to ICD-10-CM
- 327.26 Sleep related hypoventilation/hypoxemia in conditions classifiable elsewhere convert 327.26 to ICD-10-CM
- 327.27 Central sleep apnea in conditions classified elsewhere convert 327.27 to ICD-10-CM
- 327.29 Other organic sleep apnea convert 327.29 to ICD-10-CM
- 327.3 Circadian rhythm sleep disorder
- 327.30 Circadian rhythm sleep disorder, unspecified convert 327.30 to ICD-10-CM
- 327.31 Circadian rhythm sleep disorder, delayed sleep phase type convert 327.31 to ICD-10-CM
- 327.32 Circadian rhythm sleep disorder, advanced sleep phase type convert 327.32 to ICD-10-CM
- 327.33 Circadian rhythm sleep disorder, irregular sleep-wake type convert 327.33 to ICD-10-CM
- 327.34 Circadian rhythm sleep disorder, free-running type convert 327.34 to ICD-10-CM
- 327.35 Circadian rhythm sleep disorder, jet lag type convert 327.35 to ICD-10-CM
- 327.36 Circadian rhythm sleep disorder, shift work type convert 327.36 to ICD-10-CM
- 327.37 Circadian rhythm sleep disorder in conditions classified elsewhere convert 327.37 to ICD-10-CM
- 327.39 Other circadian rhythm sleep disorder convert 327.39 to ICD-10-CM
- 327.4 Organic parasomnia
- 327.40 Organic parasomnia, unspecified convert 327.40 to ICD-10-CM
- 327.41 Confusional arousals convert 327.41 to ICD-10-CM
- 327.42 REM sleep behavior disorder convert 327.42 to ICD-10-CM
- 327.43 Recurrent isolated sleep paralysis convert 327.43 to ICD-10-CM
- 327.44 Parasomnia in conditions classified elsewhere convert 327.44 to ICD-10-CM
- 327.49 Other organic parasomnia convert 327.49 to ICD-10-CM
- 327.5 Organic sleep related movement disorders
- 327.51 Periodic limb movement disorder convert 327.51 to ICD-10-CM
- 327.52 Sleep related leg cramps convert 327.52 to ICD-10-CM
- 327.53 Sleep related bruxism convert 327.53 to ICD-10-CM
- 327.59 Other organic sleep related movement disorders convert 327.59 to ICD-10-CM
- 327.8 Other organic sleep disorders convert 327.8 to ICD-10-CM
