International Classification of Sleep Disorders, 3rd edition (ICSD-3)

International Classification of Sleep Disorders, 3rd edition (ICSD-3)

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The International Classification of Sleep Disorders, 3rd edition (ICSD-3), is the authoritative clinical text for the diagnosis of sleep disorders. Published by the American Academy of Sleep Medicine and updated in 2014, it groups sleep disorders into six major categories – 1) insomnia, 2) sleep-related breathing disorders, 3) central disorders of hypersomnolence, 4) circadian rhythm sleep-wake disorders, 5) parasomnias, and 6) sleep-related movement disorders. A seventh category is for “other sleep disorders” not captured by the six major categories. Sleep disorders including idiopathic hypersomnia, narcolepsy (both types 1 and 2), and Kleine-Levin syndrome are categorized as “central disorders of hypersomnolence.”

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