Code
Hierarchy
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G00-G99 Diseases of the nervous system (G00-G99)
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G40-G47 Episodic and paroxysmal disorders (G40-G47)
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G47 Sleep disorders
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G47.2 Circadian rhythm sleep disorders
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G47.20 Circadian rhythm sleep disorder, unspecified type
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G47.21 Circadian rhythm sleep disorder, delayed sleep phase type
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G47.22 Circadian rhythm sleep disorder, advanced sleep phase type
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G47.23 Circadian rhythm sleep disorder, irregular sleep wake type
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G47.24 Circadian rhythm sleep disorder, free running type
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G47.25 Circadian rhythm sleep disorder, jet lag type
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G47.26 Circadian rhythm sleep disorder, shift work type
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G47.27 Circadian rhythm sleep disorder in conditions classified elsewhere
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G47.29 Other circadian rhythm sleep disorder
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Inclusion Terms
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Disorders of the sleep wake schedule
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Inversion of nyctohemeral rhythm
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Inversion of sleep rhythm
Excludes 2
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nightmares (F51.5)
- F51.5 Nightmare disorder
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nonorganic sleep disorders (F51.-)
- F51 Sleep disorders not due to a substance or known physiological condition
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sleep terrors (F51.4)
- F51.4 Sleep terrors [night terrors]
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sleepwalking (F51.3)
- F51.3 Sleepwalking [somnambulism]
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certain conditions originating in the perinatal period (P04-P96)
- A00-B99 Certain infectious and parasitic diseases (A00-B99)
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complications of pregnancy, childbirth and the puerperium (O00-O9A)
- O00-O9A Pregnancy, childbirth and the puerperium (O00-O9A)
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congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
- Q00-Q99 Congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
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endocrine, nutritional and metabolic diseases (E00-E88)
- S00-T88 Injury, poisoning and certain other consequences of external causes (S00-T88)
- C00-D49 Neoplasms (C00-D49)
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symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)