G25.81 — Restless legs syndrome

G25.81

ICD-10 Chapter 6: Nervous System — illustrative image — Chapter 6: Diseases of the nervous system (G00–G99) — illustrative image

What this code means

Restless legs syndrome causes an urge to move the legs, usually in the evening, with uncomfortable sensations relieved by movement.

Also called: restless legs syndrome, rls.

When this code is used

Used for restless legs syndrome.

Where it sits in ICD-10-CM

Code G25.81 belongs to Chapter 6: Diseases of the nervous system, which covers codes G00–G99 in the FY2027 ICD-10-CM tabular list. The official description above is copied verbatim from the CDC/NCHS FY2027 code file.

Related symptoms

Insomnia

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Frequently asked questions

What is ICD-10-CM code G25.81?

G25.81 is the ICD-10-CM diagnosis code for “Restless legs syndrome”. Restless legs syndrome causes an urge to move the legs, usually in the evening, with uncomfortable sensations relieved by movement.

When is code G25.81 used?

Used for restless legs syndrome. It belongs to Chapter 6 of ICD-10-CM (Diseases of the nervous system).

This guide explains ICD-10-CM codes in plain language for patients, students and other readers. It is educational information only — not coding, billing or medical advice. The code recorded for any real encounter is assigned from the full clinical documentation by the treating team and qualified coders, and only they can decide which code fits a specific case.