ICD-10-CM Alphabetic Index · FY 2027 51 Entries
Hypersomnia in the ICD-10-CM Index ICD-10-CM
The main term Hypersomnia (organic) carries 51 index entries pointing to 27 ICD-10-CM codes. The default entry is G47.10, the code the bare main term maps to; every indented line below refines the term by site, cause, or type. Verify any candidate code in the Tabular List before using it.
✓ Built from the official CMS FY 2027 index fileEffective Oct 1, 2026 – Sep 30, 2027
51
Index Entries
27
Codes Referenced
G47.10
Default Code
H
Letter
51 of 51 shown
ICD-10-CM
Index Entries Under Hypersomnia 51 entries · 27 codes
Hypersomnia (organic) G47.10
due to
alcohol
abuse F10.182
dependence F10.282
use F10.982
amphetamines
abuse F15.182
dependence F15.282
use F15.982
caffeine
abuse F15.182
dependence F15.282
use F15.982
cocaine
abuse F14.182
dependence F14.282
use F14.982
drug NEC
abuse F19.182
dependence F19.282
use F19.982
medical condition G47.14
mental disorder F51.13
opioid
abuse F11.182
dependence F11.282
use F11.982
psychoactive substance NEC
abuse F19.182
dependence F19.282
use F19.982
sedative, hypnotic, or anxiolytic
abuse F13.182
dependence F13.282
use F13.982
stimulant NEC
abuse F15.182
dependence F15.282
use F15.982
idiopathic G47.11
with long sleep time G47.11
without long sleep time G47.12
nonorganic origin F51.11
specified NEC F51.19
not due to a substance or known physiological condition F51.11
specified NEC F51.19
primary F51.11
recurrent G47.13
specified NEC G47.19
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Related Index Terms
Source: Centers for Medicare & Medicaid Services, FY 2027 ICD-10-CM Index to Diseases and Injuries release files, effective October 1, 2026 through September 30, 2027.
