Sleep disorders (G47) ICD-10-CM
The G47 code range covers sleep disorders with 53 ICD-10-CM diagnosis codes. 43 of them are billable and valid for claim submission in fiscal year 2027, and the category headers group them but cannot themselves be billed.
Type 2 Excludes
A type 2 excludes note represents "Not included here". An excludes2 note indicates that the condition excluded is not part of the condition represented by the code, but a patient may have both conditions at the same time. When an Excludes2 note appears under a code, it is acceptable to use both the code and the excluded code together, when appropriate.
Codes in the G47 Range 53 codes · 43 billable
- G47 Sleep disordersNon-billable
- G47.0 InsomniaNon-billable
- G47.00 Insomnia, unspecified
- G47.01 Insomnia due to medical condition
- G47.09 Other insomnia
- G47.1 HypersomniaNon-billable
- G47.10 Hypersomnia, unspecified
- G47.11 Idiopathic hypersomnia with long sleep time
- G47.12 Idiopathic hypersomnia without long sleep time
- G47.13 Recurrent hypersomnia
- G47.14 Hypersomnia due to medical condition
- G47.19 Other hypersomnia
- G47.2 Circadian rhythm sleep disordersNon-billable
- G47.20 Circadian rhythm sleep disorder, unspecified type
- G47.21 Circadian rhythm sleep disorder, delayed sleep phase type
- G47.22 Circadian rhythm sleep disorder, advanced sleep phase type
- G47.23 Circadian rhythm sleep disorder, irregular sleep wake type
- G47.24 Circadian rhythm sleep disorder, free running type
- G47.25 Circadian rhythm sleep disorder, jet lag type
- G47.26 Circadian rhythm sleep disorder, shift work type
- G47.27 Circadian rhythm sleep disorder in conditions classified elsewhere
- G47.29 Other circadian rhythm sleep disorder
- G47.3 Sleep apneaNon-billable
- G47.30 Sleep apnea, unspecified
- G47.31 Primary central sleep apnea
- G47.32 High altitude periodic breathing
- G47.33 Obstructive sleep apnea (adult) (pediatric)
- G47.34 Idiopathic sleep related nonobstructive alveolar hypoventilation
- G47.35 Congenital central alveolar hypoventilation syndrome
- G47.36 Sleep related hypoventilation in conditions classified elsewhere
- G47.37 Central sleep apnea in conditions classified elsewhere
- G47.39 Other sleep apnea
- G47.4 Narcolepsy and cataplexyNon-billable
- G47.41 NarcolepsyNon-billable
- G47.411 Narcolepsy with cataplexy
- G47.419 Narcolepsy without cataplexy
- G47.42 Narcolepsy in conditions classified elsewhereNon-billable
- G47.421 Narcolepsy in conditions classified elsewhere with cataplexy
- G47.429 Narcolepsy in conditions classified elsewhere without cataplexy
- G47.5 ParasomniaNon-billable
- G47.50 Parasomnia, unspecified
- G47.51 Confusional arousals
- G47.52 REM sleep behavior disorder
- G47.53 Recurrent isolated sleep paralysis
- G47.54 Parasomnia in conditions classified elsewhere
- G47.59 Other parasomnia
- G47.6 Sleep related movement disordersNon-billable
- G47.61 Periodic limb movement disorder
- G47.62 Sleep related leg cramps
- G47.63 Sleep related bruxism
- G47.69 Other sleep related movement disorders
- G47.8 Other sleep disorders
- G47.9 Sleep disorder, unspecified
Clinical Terms in This Code Range
Definitions from the National Library of Medicine for conditions coded in the G47 range.
Hypersomnia
A sleep disorder characterized by excessive sleepiness.
Insomnia
A sleep disorder characterized by difficulty in falling asleep and/or remaining asleep.
Narcolepsy
A condition characterized by recurrent episodes of daytime somnolence and lapses in consciousness (microsomnias) that may be associated with automatic behaviors and AMNESIA. CATAPLEXY; SLEEP PARALYSIS, and hypnagogic HALLUCINATIONS frequently accompany narcolepsy. The pathophysiology of this disorder includes sleep-onset rapid eye movement (REM) sleep, which normally follows stage III or IV sleep. (From Neurology 1998 Feb;50(2 Suppl 1):S2-S7)
Nocturnal Myoclonus Syndrome
Excessive periodic leg movements during sleep that cause micro-arousals and interfere with the maintenance of sleep. This condition induces a state of relative sleep deprivation which manifests as excessive daytime hypersomnolence. The movements are characterized by repetitive contractions of the tibialis anterior muscle, extension of the toe, and intermittent flexion of the hip, knee and ankle. (Adams et al., Principles of Neurology, 6th ed, p387)
Parasomnias
Movements or behaviors associated with sleep, sleep stages, or partial arousals from sleep that may impair sleep maintenance. Parasomnias are generally divided into four groups: arousal disorders, sleep-wake transition disorders, parasomnias of REM sleep, and nonspecific parasomnias. (From Thorpy, Sleep Disorders Medicine, 1994, p191)
REM Sleep Behavior Disorder
A disorder characterized by episodes of vigorous and often violent motor activity during REM sleep (SLEEP, REM). The affected individual may inflict self injury or harm others, and is difficult to awaken from this condition. Episodes are usually followed by a vivid recollection of a dream that is consistent with the aggressive behavior. This condition primarily affects adult males. (From Adams et al., Principles of Neurology, 6th ed, p393)
Sleep Apnea Syndromes
Disorders characterized by multiple cessations of respirations during sleep that induce partial arousals and interfere with the maintenance of sleep. Sleep apnea syndromes are divided into central (see SLEEP APNEA, CENTRAL), obstructive (see SLEEP APNEA, OBSTRUCTIVE), and mixed central-obstructive types.
Sleep Apnea, Obstructive
A disorder characterized by recurrent apneas during sleep despite persistent respiratory efforts. It is due to upper airway obstruction. The respiratory pauses may induce HYPERCAPNIA or HYPOXIA. Cardiac arrhythmias and elevation of systemic and pulmonary arterial pressures may occur. Frequent partial arousals occur throughout sleep, resulting in relative SLEEP DEPRIVATION and daytime tiredness. Associated conditions include OBESITY; ACROMEGALY; MYXEDEMA; micrognathia; MYOTONIC DYSTROPHY; adenotonsilar dystrophy; and NEUROMUSCULAR DISEASES. (From Adams et al., Principles of Neurology, 6th ed, p395)
Sleep Disorder
A change from the patient's baseline sleeping pattern, in the hours slept and/or an alteration/dysfunction in the stages of sleep.
Sleep Disorders, Circadian Rhythm
Dyssomnias associated with disruption of the normal 24 hour sleep wake cycle secondary to travel (e.g., JET LAG SYNDROME), shift work, or other causes.
About the G47 Code Range
Sleep disorders involve changes in a person's usual hours of sleep or in the stages of sleep.
The subdivisions separate G47.0 insomnia, G47.1 hypersomnia, and G47.2 circadian rhythm sleep disorders. Insomnia and hypersomnia distinguish unspecified forms from those due to a medical condition. Circadian rhythm codes distinguish patterns such as delayed sleep phase, jet lag, and shift work.
G47.3 separates types of sleep apnea and sleep-related hypoventilation. G47.4 distinguishes narcolepsy with or without cataplexy, including narcolepsy in other conditions. G47.5 groups parasomnias, while G47.6 groups sleep-related movement disorders. G47.8 and G47.9 identify other and unspecified sleep disorders.
Questions About This Page
How many billable codes are in the G47 range?
Of the 53 codes in this range, 43 are billable and valid for claim submission from October 1, 2026 through September 30, 2027. Category header codes group them but cannot be reported on claims.
What does the G47 range classify?
The range classifies sleep disorders. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.
Related References
Source: CMS FY 2027 ICD-10-CM Tabular List and order file, effective October 1, 2026 through September 30, 2027.
