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ICD-10-CM Current in FY 2027

G47.1

Hypersomnia

Release
FY 2027
Effective
Official source (opens in a new tab)

Hierarchy

Where G47.1 sits in the official hierarchy. Each level is the code it is classified under.

  1. G47 Parent Sleep disorders
  2. G47.1 This code Hypersomnia

Official Coding Notes

Reproduced verbatim from the FY 2027 ICD-10-CM files. Notes labelled as inherited are declared on a parent code and apply here too.

Excludes2

alcohol-related hypersomnia ( F10.182 , F10.282 , F10.982 )

Excludes2

nightmares ( F51.5 )

Inherited from G47 — Sleep disorders

Excludes2

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 )

Excludes2

nonorganic sleep disorders ( F51 .-)

Inherited from G47 — Sleep disorders

Excludes2

hypersomnia due to a mental disorder ( F51.13 )

Excludes2

sleep terrors ( F51.4 )

Inherited from G47 — Sleep disorders

Excludes2

hypersomnia not due to a substance or known physiological condition ( F51.1- )

Excludes2

sleepwalking ( F51.3 )

Inherited from G47 — Sleep disorders

Excludes2

primary hypersomnia ( F51.11 )

Excludes2

sleep apnea ( G47.3- )

More Specific Codes

6 codes under G47.1

Version History

How G47.1 appears in each release imported from the official files, newest first.

  1. FY 2027 Effective

    Current

    Hypersomnia

  2. FY 2026 Effective

    Unchanged

    Hypersomnia

Related Codes

Other codes under G47

Data Source

Code information on this page is derived from the FY 2027 ICD-10-CM files published by CDC NCHS and CMS.

Release
FY 2027
Effective
Source file
icd10cm-code-descriptions-2027.zip

Official ICD-10-CM source files (opens in a new tab)

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