G47.1

Clinical Information

• A disorder characterized by characterized by excessive sleepiness during the daytime.

• A sleep disorder characterized by excessive sleepiness during the daytime.

• Disorders characterized by hypersomnolence during normal waking hours that may impair cognitive functioning. Subtypes include primary hypersomnia disorders e.g., idiopathic hypersomnolence; narcolepsy; and kleine-levin syndrome) and secondary hypersomnia disorders where excessive somnolence can be attributed to a known cause e.g., drug affect, mental disorders, and sleep apnea syndrome). from j neurol sci 1998 jan 8;153 2):192-202; thorpy, principles and practice of sleep medicine, 2nd ed, p320)

• Excessive sleepiness.

Details

• G47.1 should not be used for reimbursement purposes as there are multiple codes below it that contain a greater level of detail.

• The 2023 edition of ICD-10-CM G47.1 became effective on October 1, 2022.

• This is the American ICD-10-CM version of G47.1 – other international versions of ICD-10 G47.1 may differ.