G47.11
Idiopathic hypersomnia with long sleep time
Billable FY2026 2025-10-01 → 2026-09-30
Exclusions 18 never code together
G47code
G47.1code
Excludes2
- alcohol-related hypersomnia (F10.182, F10.282, F10.982)F10.182F10.282F10.982
- 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)F11.182F11.282F11.982F13.182F13.282F13.982F14.182F14.282F14.982F15.182F15.282F15.982F19.182F19.282F19.982
- hypersomnia due to a mental disorder (F51.13)F51.13
- hypersomnia not due to a substance or known physiological condition (F51.1-)F51.1-
- primary hypersomnia (F51.11)F51.11
- sleep apnea (G47.3-)G47.3-
G00-G99chapter
Excludes2
- certain conditions originating in the perinatal period (P04-P96)P04-P96
- certain infectious and parasitic diseases (A00-B99)A00-B99
- complications of pregnancy, childbirth and the puerperium (O00-O9A)O00-O9A
- congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)Q00-Q99
- endocrine, nutritional and metabolic diseases (E00-E88)E00-E88
- injury, poisoning and certain other consequences of external causes (S00-T88)S00-T88
- neoplasms (C00-D49)C00-D49
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)R00-R94
Excludes2 — not included here, but the patient may have both. Code both when documented.
Instructional notes 1
G47.11code
Inclusion terms
- Idiopathic hypersomnia NOS
Index entries leading here 1
Alongside this code 5 same parent — G47.1
Additional references
AHA Coding Clinic® Licence required
Official coding advice for this code. Published by the American Hospital Association. Not included in this installation.