Code
Hierarchy
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F01-F99 Mental, Behavioral and Neurodevelopmental disorders (F01-F99)
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F50-F59 Behavioral syndromes associated with physiological disturbances and physical factors (F50-F59)
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F51 Sleep disorders not due to a substance or known physiological condition
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F51.0 Insomnia not due to a substance or known physiological condition
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F51.1 Hypersomnia not due to a substance or known physiological condition
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F51.3 Sleepwalking [somnambulism]
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F51.4 Sleep terrors [night terrors]
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F51.5 Nightmare disorder
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F51.8 Other sleep disorders not due to a substance or known physiological condition
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F51.9 Sleep disorder not due to a substance or known physiological condition, unspecified
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Includes
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disorders of psychological development