G47.1
Hypersomnia
Non-billable headerNot valid on its own. Use one of the more specific codes under it.
G47.1 is a non-billable ICD-10-CM code header for hypersomnia. Report a more specific code from it instead. It is part of the FY2027 code set, effective October 1, 2026. The more specific codes under it are G47.10 Hypersomnia, unspecified; G47.11 Idiopathic hypersomnia with long sleep time; G47.12 Idiopathic hypersomnia without long sleep time; G47.13 Recurrent hypersomnia and 2 more. Its coding notes include 18 Excludes2 entries.
Excludes2
Not included here. Both codes may be reported if the patient has both conditions.
This code
- alcohol-related hypersomnia (F10.182, F10.282, F10.982)
- drug-related hypersomnia (F11.182, F11.282, F11.982, F13.182, F13.282, F13.982, F14.182, F14.282, F14.982, F15.182, F15.282, F15.982, F19.182, F19.282, F19.982)
- hypersomnia due to a mental disorder (F51.13)
- hypersomnia not due to a substance or known physiological condition (F51.1-)
- primary hypersomnia (F51.11)
- sleep apnea (G47.3-)
Inherited from G47 Sleep disorders
Also from chapter/block level (8 notes)
Inherited from Chapter 6 Diseases of the nervous system
- certain conditions originating in the perinatal period (P04-P96)
- certain infectious and parasitic diseases (A00-B99)
- complications of pregnancy, childbirth and the puerperium (O00-O9A)
- congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
- endocrine, nutritional and metabolic diseases (E00-E88)
- injury, poisoning and certain other consequences of external causes (S00-T88)
- neoplasms (C00-D49)
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)