Restless Leg Syndrome ICD-10 Code

What is restless legs syndrome? 

RLS is a sensory-motor disorder that affects millions of people around the world. The hallmark of RLS is an overwhelming urge to move the legs to alleviate uncomfortable sensations, often described as creeping, crawling, tingling, or pulling.  

These symptoms are most prominent when the patient is at rest, making it difficult to relax or sleep. The discomfort typically improves with movement, such as walking or stretching, but often returns once the patient is stationary again.  

RLS can occur in both male and female individuals, but it is more common in women and tends to worsen with age. While some cases of RLS are idiopathic (without a known cause), it can also be linked to underlying medical conditions such as iron deficiency anemia, kidney disease, diabetes, or peripheral neuropathy. 

ICD-10 code for RLS (restless legs syndrome) 

ICD-10-CM Code: G25.81 

Code description: Restless leg syndrome 

ICD-10 chapter: Diseases of the Nervous System (G00–G99) 

Category: Other extrapyramidal and movement disorders (G25) 

Billable code: Yes (valid for reimbursement) 

Applicable to: Willis-Ekbom disease 

This code is used to report a diagnosis of primary restless leg syndrome when supported by appropriate clinical documentation. 

When to use ICD-10 code G25.81 

ICD-10 code G25.81 should be assigned when a patient is diagnosed with restless leg syndrome based on clinical evaluation and documented symptoms. Common indicators include: 

• An urge to move the legs, often accompanied by uncomfortable sensations
• Symptoms that begin or worsen during periods of rest or inactivity
• Partial or complete relief with movement
• Symptoms that are worse in the evening or at night 

Clear documentation of these features supports accurate code assignment and reduces the risk of claim denials. 

Coding rules, notes, and exclusions 

When assigning ICD-10 code G25.81, consider the following coding guidelines: 

• Exclude other movement disorders when documentation supports a different diagnosis.
• Use additional codes when restless leg syndrome is secondary to another condition, such as iron deficiency anemia, pregnancy, or renal disease.
• Don’t confuse RLS with peripheral neuropathy or other sleep-related movement disorders unless clearly documented. 

Always follow official ICD-10-CM coding guidelines and payer-specific requirements. 

Synonyms and related terms 

RLS may appear in medical records under various terms, including: 

• Willis-Ekbom disease
• Ekbom syndrome
• Sleep-related movement disorder (when specifically documented as RLS)
• Primary restless leg syndrome
• Secondary restless leg syndrome 

Including these terms in documentation can support clarity and coding accuracy. 

Clinical overview of restless leg syndrome 

Characterized by uncomfortable sensations in the legs, RLS is a chronic neurological condition where patients often describe the sensations they experience as crawling, tingling, pulling, or aching. Symptoms typically occur during rest and are relieved by movement. 

RLS can significantly disrupt sleep and quality of life. The condition may be primary (idiopathic) or secondary to other medical conditions, such as iron deficiency, pregnancy, diabetes, or kidney disease. 

Symptoms and causes of restless legs syndrome  

Patients with RLS often describe symptoms as uncomfortable, unpleasant sensations in the legs that are difficult to ignore. Common symptoms include:  

• Uncontrollable urge to move the legs: This is the primary symptom of RLS and is usually triggered by periods of rest or inactivity. 
• Tingling, burning, or itching in the legs: These sensations are often described as creeping or crawling and can range from mild discomfort to severe distress. 
• Symptoms that worsen at night: RLS symptoms are often more pronounced in the evening or overnight, leading to difficulties with falling asleep or staying asleep. 
• Temporary relief with movement: Walking, stretching, or moving the legs often provides momentary relief from symptoms.  

Causes: While the exact cause of RLS isn’t known, several factors are associated with the condition, including:  

• Genetics: RLS tends to run in families, suggesting a genetic piece. 
• Iron deficiency: Low iron levels or abnormal iron metabolism in the brain may contribute to RLS. 
• Pregnancy: Pregnant women, particularly in the third trimester, may experience RLS, though symptoms typically resolve after childbirth. 
• Chronic diseases: Conditions such as chronic kidney disease, diabetes, and peripheral neuropathy have been linked to RLS. 
• Medications: Certain medications, such as antidepressants, antipsychotics, and antihistamines, may exacerbate RLS symptoms. 

Nursing assessment and documentation considerations 

Accurate nursing assessment and documentation are essential for supporting the diagnosis of RLS and the use of ICD-10 code G25.81. 

Key documentation elements include: 

• Description of symptoms and onset
• Factors that worsen or relieve symptoms
• Impact on sleep and daily functioning
• Relevant medical history and comorbidities
• Current medications and treatments 

Clear, consistent documentation helps ensure appropriate coding and continuity of care. 

Nursing interventions for restless legs syndrome  

Effective nursing care for patients with RLS focuses on alleviating symptoms, improving sleep quality, and addressing any underlying health issues that may contribute to RLS.  

Below are key nursing interventions for managing RLS:  

1. Symptom assessment and monitoring  

Thorough assessment and monitoring of RLS symptoms are essential for developing a personalized care plan. Nurses should evaluate the intensity, frequency, and triggers of the patient's symptoms.  

Application: Nurses should conduct a detailed history of the patient’s symptoms, including when they occur, what makes them worse or better, and how they affect daily functioning and sleep. Regular follow-ups are necessary to track the progression of symptoms and evaluate the effectiveness of treatment strategies.  

2. Sleep hygiene and management  

One of the most significant consequences of RLS is disrupted sleep, leading to chronic fatigue, irritability, and reduced quality of life. Nurses should educate patients on proper sleep hygiene practices to improve sleep quality and reduce nighttime symptoms.  

Application: Nurses should advise patients on the importance of keeping a consistent sleep schedule, creating a calming bedtime routine, and minimizing distractions such as smartphones before bed. Encouraging patients to limit caffeine, alcohol, and nicotine intake, especially in the evening, may also reduce RLS symptoms. For patients experiencing severe sleep disturbances, nurses may need to collaborate with sleep specialists.  

3. Non-pharmacological therapies  

Non-pharmacological interventions are often effective in managing mild to moderate RLS symptoms. These interventions can provide relief without the side effects of medications.  

Application: Nurses can recommend several non-pharmacological strategies for relieving symptoms:  

• Leg massages or warm baths: These can help relax the muscles and alleviate discomfort. 
• Hot or cold compresses: Alternating between heat and cold therapy can provide relief from the sensations associated with RLS. 
• Regular exercise: Practicing some physical activity, such as walking, swimming, or yoga, can help reduce the frequency and intensity of RLS symptoms. However, strenuous exercise close to bedtime should be avoided as it may worsen symptoms.  

4. Pharmacological management  

For patients with moderate to severe RLS, medications may be necessary to manage symptoms effectively. Nurses should be aware of the common medications used to treat RLS and monitor for side effects.  

Application: Common medications for RLS include:  

• Dopaminergic agents: Medications such as pramipexole and ropinirole, which increase dopamine levels in the brain, are commonly prescribed to manage RLS symptoms.   
• Iron supplements: If iron deficiency is detected, nurses should ensure that patients take iron supplements as prescribed, monitoring for side effects such as constipation. 
• Anticonvulsants: Medications like gabapentin or pregabalin may be used to treat RLS, especially if symptoms are painful. 
• Opioids or benzodiazepines: These may be considered for severe cases, although they carry a higher risk of dependence and side effects. 
• Nurses must instruct patients on the proper use of these medications, potential side effects, and why adherence to the prescribed treatment regimen is critical.  

5. Addressing underlying conditions  

Nurses should assess patients for any underlying medical conditions that could contribute to RLS, such as iron deficiency, kidney disease, or diabetes. Managing these conditions can significantly reduce RLS symptoms.  

Application: If iron deficiency is identified, nurses should ensure that patients receive appropriate iron supplementation and dietary advice to improve iron levels.  

For patients with chronic conditions like diabetes or kidney disease, nurses should work closely with the healthcare team to optimize the management of these conditions, as well-controlled blood sugar or kidney function can reduce RLS symptoms.  

6. Patient education and support  

Providing patient education about restless legs syndrome is essential for helping patients manage their condition effectively. Nurses should offer information on lifestyle modifications, treatment options, and strategies for coping with the emotional and psychological impacts of RLS.  

Application: Nurses should educate patients on the chronic nature of RLS and emphasize the importance of self-management strategies. Patients should be encouraged to keep a symptom diary to identify triggers and monitor the effectiveness of treatments.  

Additionally, nurses can connect patients with support groups or online communities, where they can exchange experiences and coping strategies with others who have RLS. 

Related ICD-10 Codes 

Depending on the underlying cause or associated conditions, additional ICD-10 codes may be required, such as: 

• Iron deficiency anemia
• Chronic kidney disease
• Pregnancy-related conditions
• Sleep disorders 

Always review documentation carefully to determine whether secondary codes are necessary. 

• Restless legs syndrome is coded using ICD-10-CM G25.81.
• Accurate documentation is essential for proper code assignment.
• Nurses play a vital role in assessment, education, and care coordination.