G47.1
Non-billableHypersomnia
Hypersomnia
This is a header/category code. For billing purposes, use a more specific child code from the list below.
Coding Notes
Excludes 2
Conditions not included here, but the patient may have both
- •certain conditions originating in the perinatal periodP04-P96
- •certain infectious and parasitic diseasesA00-B99
- •complications of pregnancy, childbirth and the puerperiumO9A)O00
- •congenital malformations, deformations, and chromosomal abnormalitiesQ00-Q99
- •endocrine, nutritional and metabolic diseasesE00-E88
- •injury, poisoning and certain other consequences of external causesS00-T88
- •neoplasmsC00-D49
- •symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classifiedR00-R94
- •nightmaresF51.5
- •nonorganic sleep disordersF51
- •sleep terrorsF51.4
- •sleepwalkingF51.3
- •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 disorderF51.13
- •hypersomnia not due to a substance or known physiological conditionF51.1
- •primary hypersomniaF51.11
- •sleep apneaG47.3
Child Codes (6)
Related Codes(8)
Related Conditions
ICD-11 Equivalents(1)
ICD-11 Equivalents
View full mappingCorresponding ICD-11 codes from the WHO crosswalk mapping
Also Known As / Clinical Terms(19)
UMLS
- Excessive sleepC0917799
- Excessive sleepinessC0917799
- HypersomniaC0917799
- Hypersomnia (disorder)C0917799
- Hypersomnia (excessive sleeping)C0917799
- Hypersomnia NOSC0917799
- Hypersomnia, unspecifiedC0917799
- HypersomniasC0917799
- Sleep excessiveC0917799
- Sleeps too muchC0917799
- excessive sleepC0917799
- excessive sleepinessC0917799
- excessive sleepingC0917799
- hypersomniaC0917799
- increased sleepC0917799
- much sleep tooC0917799
- much sleeping tooC0917799
- sleep too muchC0917799
- too much sleepC0917799
Frequently Asked Questions
What is the ICD-10 code for hypersomnia?
The ICD-10-CM code for hypersomnia is G47.1. The full clinical description is "Hypersomnia". G47.1 is a non-billable header code. Use a more specific child code for billing purposes.
What does ICD-10 code G47.1 mean?
ICD-10-CM code G47.1 represents “Hypersomnia”. It is classified under Chapter 6: Diseases of the Nervous System and is a non-billable header code. Use a more specific child code for billing purposes.
Is G47.1 a billable code?
No, G47.1 is a non-billable header code. You need to use one of its more specific child codes for billing. There are 6 child codes under G47.1.
What chapter is G47.1 in?
G47.1 is in Chapter 6: Diseases of the Nervous System (codes G00-G99).
What are the subcategories under G47.1?
G47.1 has 6 child codes, including: 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.
What are the UMLS CUIs for G47.1?
G47.1 is linked to 1 UMLS Concept Unique Identifier: C0917799. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.
How does G47.1 relate to ICF functioning codes?
ICF (International Classification of Functioning, Disability and Health) codes describe how conditions like hypersomnia affect a person's functioning — body functions, activities, participation, and environmental factors. AutoICD provides ICF Core Sets for 12+ conditions and can map clinical text to ICF categories automatically. Browse the ICF directory to explore functioning codes.
What is the ICD-11 equivalent of G47.1?
G47.1 maps to the ICD-11 code: 7A21 (Idiopathic hypersomnia).
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Includes SNOMED Clinical Terms® (SNOMED CT®) used by permission of SNOMED International. Includes content from the UMLS Metathesaurus, courtesy of the U.S. National Library of Medicine.