2026 ICD-10-CM Diagnosis Code G25.81Restless legs syndrome

ICD-10-CM Codes›G00–G99›G20-G26›G25

ICD-10-CM G25.81
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

G25.81 is a billable ICD-10-CM diagnosis code for restless legs syndrome. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026). In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Other nervous system disorders (often hereditary or degenerative) and Sleep wake disorders.

Code Identity

ICD-10-CM Code
G25.81
Billable Status
Yes — Valid for Submission
Code Describes
Restless legs syndrome
Short Description
Restless legs syndrome
Same as the full description in the CMS dataset.
Parent Code
G25.8
Other specified extrapyramidal and movement disorders

Code Classification

ChapterG00–G99Diseases of the nervous system
SectionG20-G26Extrapyramidal and movement disorders
CategoryG25Other extrapyramidal and movement disorders
This CodeG25.81Restless legs syndrome

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Restless leg syndrome due to iron deficiency anemia
  • Restless leg syndrome due to uremia
  • Restless leg syndrome in pregnancy
  • Restless legs syndrome
  • Secondary restless legs syndrome
  • Sleep related movement disorder

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.

    • Ekbom's syndrome(restless legs)
    • Restless legs(syndrome)
    • Syndrome
      • restless legs

Clinical ClassificationClinical

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

CCSR NVS006
Other nervous system disorders (often hereditary or degenerative)
Default principal diagnosis: inpatient No · outpatient No
CCSR NVS016
Sleep wake disorders
Default principal diagnosis: inpatient Yes · outpatient Yes

Clinical InformationClinical

  • Restless Legs Syndrome

    a disorder characterized by aching or burning sensations in the lower and rarely the upper extremities that occur prior to sleep or may awaken the patient from sleep.

Patient EducationClinical

Restless Legs

Restless legs syndrome (RLS) causes a powerful urge to move your legs. Your legs become uncomfortable when you are lying down or sitting. Some people describe it as a creeping, crawling, tingling, or burning sensation. Moving makes your legs feel better, but not for long. RLS can make it hard to fall asleep and stay asleep.

Read the full article at MedlinePlus

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

Convert G25.81 to ICD-9-CMHistory

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

ICD-9-CM
333.94 Restless legs syndrome
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 G25.81Overview

Is G25.81 (Other specified extrapyramidal and movement disorders) a billable code?

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

What is the ICD-9 equivalent of G25.81?

Under the General Equivalence Mappings, restless legs syndrome converts to ICD-9-CM 333.94 (restless legs syndrome). 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.