M65.4
Radial styloid tenosynovitis [de Quervain]
Clinical Classification Guidelines
Medical Intelligence & Overview
Radial styloid tenosynovitis, commonly known as De Quervain's tenosynovitis, is a condition characterized by inflammation of the tendons located at the thumb side of the wrist. These tendons help move the thumb and wrist, and when inflamed, they can cause pain, swelling, and difficulty moving the thumb and wrist. This condition is often seen in individuals who perform repetitive hand and wrist motions, especially involving gripping or pinching activities.
Causes & Symptoms
Clinical Causes: Repetitive hand and wrist movements, particularly involving gripping, pinching, or thumb extension Injury or trauma to the wrist area Overuse of the thumb and wrist during activities such as lifting, typing, or playing certain sports Pregnancy, due to hormonal changes that can cause ligament laxity Underlying inflammatory conditions, such as rheumatoid arthritis Previous wrist or thumb injuries that lead to inflammation Certain occupations or hobbies that strain the wrist and thumb
Key Symptoms: Pain along the thumb side of the wrist, which may worsen with movement or when gripping objects Tenderness and swelling over the radial styloid process Difficulty moving the thumb or wrist comfortably A catching or sticking sensation when moving the thumb Weakness in the thumb and wrist Sometimes, the pain may radiate up the forearm
Diagnostic & Treatment
Diagnosis Path: Diagnosing De Quervain's tenosynovitis typically involves a physical examination, where a healthcare provider will assess for tenderness and swelling near the radial styloid. Specific tests, such as the Finkelstein test, are used to reproduce symptoms by moving the wrist into certain positions. In some cases, imaging tests like ultrasound or MRI may be ordered to rule out other conditions or assess the extent of inflammation.
Treatment Protocols: Treatment options focus on reducing inflammation and relieving symptoms. Common approaches include: - Resting the affected wrist and avoiding activities that trigger symptoms - Applying ice packs to reduce swelling - Taking nonsteroidal anti-inflammatory drugs (NSAIDs) to decrease pain and inflammation - Using wrist splints or thumb spica splints to immobilize the thumb and wrist - Physical therapy to strengthen the muscles and improve range of motion - Corticosteroid injections may be used in more persistent cases to deliver anti-inflammatory medication directly to the affected tendons - In rare or severe cases, surgical intervention might be considered to release the affected tendons and relieve pressure The goal of treatment is to restore normal wrist and thumb function and prevent recurrence.
Clinical Advice & FAQs
Billing Guidance
Is M65.4 a billable ICD-10 code?
Yes, M65.4 is a specific, billable code that can be used to indicate a diagnosis for reimbursement purposes.
Documentation
How do I report M65.4?
Clinical documentation must specify the nature of Radial styloid tenosynovitis [de Quervain] and any associated comorbidities for accurate reporting.
Cite this Clinical Reference