1. G47 Sleep disorders


    • nightmares (F51.5)
    • nonorganic sleep disorders (F51.-)
    • sleep terrors (F51.4)
    • sleepwalking (F51.3)
    1. G47.0 Insomnia

      1. G47.00 Insomnia, unspecified

        Inclusion term(s):

        • Insomnia NOS
      2. G47.01 Insomnia due to medical condition

      3. G47.09 Other insomnia

    2. G47.1 Hypersomnia

      1. G47.10 Hypersomnia, unspecified

        Inclusion term(s):

        • Hypersomnia NOS
      2. G47.11 Idiopathic hypersomnia with long sleep time

        Inclusion term(s):

        • Idiopathic hypersomnia NOS
      3. G47.12 Idiopathic hypersomnia without long sleep time

      4. G47.13 Recurrent hypersomnia

        Inclusion term(s):

        • Kleine-Levin syndrome
        • Menstrual related hypersomnia
      5. G47.14 Hypersomnia due to medical condition

      6. G47.19 Other hypersomnia

    3. G47.2 Circadian rhythm sleep disorders

      Inclusion term(s):

      • Disorders of the sleep wake schedule
      • Inversion of nyctohemeral rhythm
      • Inversion of sleep rhythm
      1. G47.20 Circadian rhythm sleep disorder, unspecified type

        Inclusion term(s):

        • Sleep wake schedule disorder NOS
      2. G47.21 Circadian rhythm sleep disorder, delayed sleep phase type

        Inclusion term(s):

        • Delayed sleep phase syndrome
      3. G47.22 Circadian rhythm sleep disorder, advanced sleep phase type

      4. G47.23 Circadian rhythm sleep disorder, irregular sleep wake type

        Inclusion term(s):

        • Irregular sleep-wake pattern
      5. G47.24 Circadian rhythm sleep disorder, free running type

        Inclusion term(s):

        • Circadian rhythm sleep disorder, non-24-hour sleep-wake type
      6. G47.25 Circadian rhythm sleep disorder, jet lag type

      7. G47.26 Circadian rhythm sleep disorder, shift work type

      8. G47.27 Circadian rhythm sleep disorder in conditions classified elsewhere

      9. G47.29 Other circadian rhythm sleep disorder

    4. G47.3 Sleep apnea

      1. G47.30 Sleep apnea, unspecified

        Inclusion term(s):

        • Sleep apnea NOS
      2. G47.31 Primary central sleep apnea

        Inclusion term(s):

        • Idiopathic central sleep apnea
      3. G47.32 High altitude periodic breathing

      4. G47.33 Obstructive sleep apnea (adult) (pediatric)

        Inclusion term(s):

        • Obstructive sleep apnea hypopnea
      5. G47.34 Idiopathic sleep related nonobstructive alveolar hypoventilation

        Inclusion term(s):

        • Sleep related hypoxia
      6. G47.35 Congenital central alveolar hypoventilation syndrome

      7. G47.36 Sleep related hypoventilation in conditions classified elsewhere

        Inclusion term(s):

        • Sleep related hypoxemia in conditions classified elsewhere
      8. G47.37 Central sleep apnea in conditions classified elsewhere

      9. G47.39 Other sleep apnea

    5. G47.4 Narcolepsy and cataplexy

      1. G47.41 Narcolepsy

      2. G47.42 Narcolepsy in conditions classified elsewhere

        • G47.421 Narcolepsy in conditions classified elsewhere with cataplexy
        • G47.429 Narcolepsy in conditions classified elsewhere without cataplexy
    6. G47.5 Parasomnia

      1. G47.50 Parasomnia, unspecified

        Inclusion term(s):

        • Parasomnia NOS
      2. G47.51 Confusional arousals

      3. G47.52 REM sleep behavior disorder

      4. G47.53 Recurrent isolated sleep paralysis

      5. G47.54 Parasomnia in conditions classified elsewhere

      6. G47.59 Other parasomnia

    7. G47.6 Sleep related movement disorders

      1. G47.61 Periodic limb movement disorder

      2. G47.62 Sleep related leg cramps

      3. G47.63 Sleep related bruxism

      4. G47.69 Other sleep related movement disorders

    8. G47.8 Other sleep disorders

      Inclusion term(s):

      • Other specified sleep-wake disorder
    9. G47.9 Sleep disorder, unspecified

      Inclusion term(s):

      • Sleep disorder NOS
      • Unspecified sleep-wake disorder
Abbreviations used here:

NEC Not elsewhere classifiable
This abbreviation in the Tabular List represents “other specified”. When a specific code is not available for a condition, the Tabular List includes an NEC entry under a code to identify the code as the “other specified” code.

NOS Not otherwise specified
This abbreviation is the equivalent of unspecified.