G47.11 — Idiopathic hypersomnia with long sleep time
Is G47.11 billable?
Yes — G47.11 is billable for FY2027. G47.11 is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. G47.11 may be submitted for encounters from October 1, 2026 through September 30, 2027.
G47.11 at a glance
| Code | G47.11 |
|---|---|
| Description | Idiopathic hypersomnia with long sleep time |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Which MS-DRGs does G47.11 group to?
G47.11 sits in MDC 19 and helps define the logic of 1 MS-DRG (version 44, FY2027). Which one a stay actually groups to also depends on procedures and secondary diagnoses.
- 887Other Mental Disorder Diagnosesmedical
How is G47.11 listed in the Alphabetic Index?
These are the routes through the Alphabetic Index that lead to G47.11. They show the wording a clinician may have documented, which often differs from the Tabular description.
- Hypersomnia › idiopathic (organic)
- Hypersomnia › idiopathic › with long sleep time (organic)
Inclusion terms
Alternative wording in documentation that is classified to G47.11.
- Idiopathic hypersomnia NOS
Excludes2 — not included here — inherited from Chapter 6
The conditions below are not part of G47.11, but a patient may have both at the same time. When documentation supports it, G47.11 and the excluded code may both be reported.
- 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)
Excludes2 — not included here — inherited from G47
The conditions below are not part of G47.11, but a patient may have both at the same time. When documentation supports it, G47.11 and the excluded code may both be reported.
Excludes2 — not included here — inherited from G47.1
The conditions below are not part of G47.11, but a patient may have both at the same time. When documentation supports it, G47.11 and the excluded code may both be reported.
- 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-)
How long has G47.11 existed?
G47.11 has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.
Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.