2026 ICD-10-CM Diagnosis Code G47.29Other circadian rhythm sleep disorder

ICD-10-CM Codes›G00–G99›G40-G47›G47

ICD-10-CM G47.29
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

G47.29 is a billable ICD-10-CM diagnosis code for other circadian rhythm sleep disorder. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026). Coders also document this condition as reversed sleep-wake cycle. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Sleep wake disorders.

Code Identity

ICD-10-CM Code
G47.29
Billable Status
Yes — Valid for Submission
Code Describes
Other circadian rhythm sleep disorder
Short Description
Other circadian rhythm sleep disorder
Same as the full description in the CMS dataset.
Parent Code
G47.2
Circadian rhythm sleep disorders

Code Classification

ChapterG00–G99Diseases of the nervous system
SectionG40-G47Episodic and paroxysmal disorders
CategoryG47Sleep disorders
This CodeG47.29Other circadian rhythm sleep disorder

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Reversed sleep-wake cycle

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.

    • Disorder(of)
      • sleep
        • circadian rhythm
          • specified NEC

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

  • Circadian Rhythm Sleep Disorder

    a sleep disorder characterized by persistent sleep disruption (excessive sleepiness and/or insomnia) that is due to a conflict between the individual's internal sleep-wake system and the demands of his or her environment regarding the timing and duration of sleep.

  • Delayed Sleep Phase Type Circadian Rhythm Sleep Disorder

    a subtype of circadian rhythm sleep disorder in which the individual exhibits a persistent pattern of late sleep onset and late awakening, which results from an endogenous sleep-wake cycle that is delayed relative to the societal norm.

  • Jet Lag Type Circadian Rhythm Sleep Disorder

    a subtype of circadian rhythm sleep disorder in which the individual exhibits an endogenous pattern of sleep and wakefulness that comes into conflict with the pattern of sleep and wakefulness required by a new time zone.

  • Shift Work Type Circadian Rhythm Sleep Disorder

    a subtype of circadian rhythm sleep disorder in which the individual exhibits a normal endogenous pattern of sleep and wakefulness, but this pattern comes into conflict with the desired pattern of sleep and wakefulness required by shift work.

Patient EducationClinical

Sleep Disorders

Sleep is a complex biological process. While you are sleeping, you are unconscious, but your brain and body functions are still active. They are doing a number of important jobs that help you stay healthy and function at your best. So when you don't get enough quality sleep, it does more than just make you feel tired.

The full article covers:

  • What is sleep?
  • What are sleep disorders?
  • What causes sleep disorders?
  • What are the symptoms of sleep disorders?
  • How are sleep disorders diagnosed?
  • What are the treatments for sleep disorders?

Read the full article at MedlinePlus

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

Convert G47.29 to ICD-9-CMHistory

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

ICD-9-CM
327.39 Circadian rhym sleep NEC
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 G47.29Overview

Is G47.29 (Circadian rhythm sleep disorders) a billable code?

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

What is the ICD-9 equivalent of G47.29?

Under the General Equivalence Mappings, other circadian rhythm sleep disorder converts to ICD-9-CM 327.39 (circadian rhym sleep NEC). The mapping is a direct match.

Footnotes

[1] Chronic - a chronic condition code indicates a condition lasting 12 months or longer and its effect on the patient based on one or both of the following criteria:

  • The condition results in the need for ongoing intervention with medical products,treatment, services, and special equipment
  • The condition places limitations on self-care, independent living, and social interactions.