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Restless Legs Syndrome F081

Last amended 
13 November 2018
Current RMA Instruments

Reasonable Hypothesis SOP

20 of 2014

Balance of Probabilities SOP

21 of 2014

Changes from previous Instruments Bulletin 173

ICD Coding
  • ICD-9-CM Codes: 333.99
  • ICD-10-AM Codes: G25.8
Brief description

This is a neurological disorder which manifests with an often unpleasant or uncomfortable urge to move the legs, during periods of inactivity.  It is most prominent in the evening, and is transiently relieved by movement.  There are often associated, characteristic limb movements during sleep.

This is a separate disorder from periodic limb movement disorder, which is covered by separate SOPs.

Confirming the diagnosis

This is a clinical diagnosis, with specific diagnostic criteria that need to be fulfilled.

The appropriate medical specialist is a neurologist.

Additional diagnoses covered by SOP
  • Willis-Ekbom disease
  • Wittmaack-Ekbom syndrome
Conditions excluded from SOP
  • Periodic limb movement disorder*

* another SOP applies

Clinical onset

Time of clinical onset will be based on the history from the patient of when the relevant symptoms first manifest.

Clinical worsening

The condition tends to have a chronic course, although remissions do occur.  Worsening may be evidenced by an increase in the severity or frequency of symptoms.