ICD-10-CM Billable Code

G90.523

Complex regional pain syndrome I of lower limb, bilateral

Clinical Classification Guidelines

Medical Intelligence & Overview

Complex Regional Pain Syndrome I (CRPS I), also known as reflex sympathetic dystrophy (RSD), is a chronic pain condition that typically affects a limb after an injury or trauma. When it involves both lower limbs, it indicates bilateral involvement, which can significantly impact daily activities and overall quality of life. The ICD-10 code G90.523 specifically designates CRPS I affecting both legs. This condition is characterized by prolonged and excessive pain that outlasts the usual healing process, along with various sensory, motor, and autonomic disturbances.

Causes & Symptoms

Clinical Causes: Recent injury or trauma to the lower limbs, such as fractures, sprains, or surgery Minor injuries that may seem insignificant but trigger abnormal responses in nerves Immobilization or prolonged bed rest following limb injury Nerve damage or dysfunction indicating aberrant nerve responses In some cases, CRPS may develop without an apparent cause

Key Symptoms: Persistent burning or aching pain that is disproportionate to the initial injury Swelling and changes in skin color or temperature of both legs Sensory abnormalities such as hypersensitivity to touch or temperature Motor disturbances including tremors, weakness, or difficulty moving the limbs Trophic changes like thinning or shiny skin, abnormal hair or nail growth Joint stiffness and use impairment due to pain and swelling Symptoms may fluctuate and can worsen over time without appropriate management

Diagnostic & Treatment

Diagnosis Path: Diagnosis primarily relies on clinical evaluation, including a thorough medical history and physical examination. No specific laboratory or imaging tests confirm CRPS, but they may be used to rule out other conditions. Tests such as bone scans, MRI, or sympathetic nerve blocks can assist in supporting the diagnosis. The diagnostic criteria often involve observing a combination of sensory, vasomotor, sudomotor, and motor symptoms that are disproportionate to the initial injury and persist beyond normal healing times. The bilateral involvement in G90.523 requires careful assessment to distinguish from other similar conditions.

Treatment Protocols: While there is no single cure for CRPS, early intervention can help manage symptoms and improve quality of life. Treatment strategies often include:

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.

Clinical Advice & FAQs

Billing Guidance

Is G90.523 a billable ICD-10 code?
Yes, G90.523 is a specific, billable code that can be used to indicate a diagnosis for reimbursement purposes.

Documentation

How do I report G90.523?
Clinical documentation must specify the nature of Complex regional pain syndrome I of lower limb, bilateral and any associated comorbidities for accurate reporting.

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