2026 ICD-10-CM Diagnosis Code G47.00Insomnia, unspecified

ICD-10-CM Codes›G00–G99›G40-G47›G47

ICD-10-CM G47.00
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

G47.00 is a billable ICD-10-CM diagnosis code for insomnia, unspecified. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026). Coders also document this condition as acute insomnia. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Sleep wake disorders.

Code Identity

ICD-10-CM Code
G47.00
Billable Status
Yes — Valid for Submission
Code Describes
Insomnia, unspecified
Short Description
Insomnia, unspecified
Same as the full description in the CMS dataset.
Parent Code
G47.0
Insomnia

Code Classification

ChapterG00–G99Diseases of the nervous system
SectionG40-G47Episodic and paroxysmal disorders
CategoryG47Sleep disorders
This CodeG47.00Insomnia, unspecified

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Acute insomnia
  • Cannot sleep at all
  • Circumstances interfere with sleep
  • Finding related to ability to sleep
  • Initial insomnia
  • Insomnia
  • Insomnia with sleep apnea
  • Late insomnia
  • Middle insomnia

Tabular List NotesGuidance

Coding notes and annotation back-references applicable to this code.

Inclusion Terms

  • Insomnia NOS

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

External Cause of Injuries IndexGuidance

References for this code in the External Cause of Injuries Index.

    • Insomnia(organic)

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR NVS016
Sleep wake disorders
Default principal diagnosis: inpatient Yes · outpatient Yes

Clinical InformationClinical

  • Initial Insomnia

    difficulty falling asleep.

  • Middle Insomnia

    difficulty maintaining sleep.

Patient EducationClinical

Insomnia

Insomnia is a common sleep disorder. If you have it, you may have trouble falling asleep, staying asleep, or both. As a result, you may get too little sleep or have poor-quality sleep. You may not feel refreshed when you wake up.

The full article covers:

  • What is insomnia?
  • What are the types of insomnia?
  • Who is at risk for insomnia?
  • What are the symptoms of insomnia?
  • What other problems can insomnia cause?
  • How is insomnia diagnosed?
  • What are the treatments for insomnia?

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Convert G47.00 to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
780.52 Insomnia NOS
Exact Match The mapping is direct, with no qualifiers.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About G47.00Overview

Is G47.00 (Insomnia) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report insomnia, unspecified on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What is the ICD-9 equivalent of G47.00?

Under the General Equivalence Mappings, insomnia, unspecified converts to ICD-9-CM 780.52 (insomnia NOS). The mapping is a direct match.

Footnotes

[1] Not chronic - A diagnosis code that does not fit the criteria for chronic condition (duration, ongoing medical treatment, and limitations) is considered not chronic. Some codes designated as not chronic are acute conditions. Other diagnosis codes that indicate a possible chronic condition, but for which the duration of the illness is not specified in the code description (i.e., we do not know the condition has lasted 12 months or longer) also are considered not chronic.