G47.12

Idiopathic hypersomnia without long sleep time

Billable / specific

G47.12 is a billable, specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes in FY2027.

Excludes2

Not included here — may be reported together when both conditions exist.

alcohol-related hypersomnia (F10.182, F10.282, F10.982) (from G47.1)
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) (from G47.1)
hypersomnia due to a mental disorder (F51.13) (from G47.1)
hypersomnia not due to a substance or known physiological condition (F51.1-) (from G47.1)
primary hypersomnia (F51.11) (from G47.1)
sleep apnea (G47.3-) (from G47.1)
certain conditions originating in the perinatal period (P04-P96) (from G47)
certain infectious and parasitic diseases (A00-B99) (from G47)
complications of pregnancy, childbirth and the puerperium (O00-O9A) (from G47)
congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99) (from G47)
endocrine, nutritional and metabolic diseases (E00-E88) (from G47)
injury, poisoning and certain other consequences of external causes (S00-T88) (from G47)
neoplasms (C00-D49) (from G47)
symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94) (from G47)
nightmares (F51.5) (from G47)
nonorganic sleep disorders (F51.-) (from G47)
sleep terrors (F51.4) (from G47)
sleepwalking (F51.3) (from G47)