M65.03 Abscess of tendon sheath, forearm

Name of the Condition

• Abscess of tendon sheath, forearm

Summary

Abscess of the tendon sheath in the forearm is a localized infection characterized by pus accumulation within the protective covering of the tendons. This condition can cause pain, swelling, and reduced mobility in the affected area if not promptly treated.

Causes

Bacterial infections are the primary cause, often resulting from trauma, puncture wounds, or the spread of infection from other areas. Less commonly, it may arise from systemic infections or direct inoculation of bacteria into the tendon sheath.

Risk Factors

• Recent injuries or penetrative wounds to the forearm
• Pre-existing conditions like diabetes or immune deficiencies
• Poor hygiene practices, especially after minor injuries
• Occupational or recreational activities involving repetitive hand or forearm use

Symptoms

• Swelling and redness around the affected tendon sheath
• Pain or tenderness, particularly with movement
• Warmth in the affected area
• Possible fever or chills indicating systemic infection
• Limited range of motion in the forearm

Diagnosis

Diagnosis typically involves a physical examination to assess tenderness, swelling, and movement limitations. Imaging studies, such as ultrasound or MRI, may be used to confirm the presence of an abscess.

Treatment Options

• Antibiotic therapy to address bacterial infection
• Surgical intervention may be necessary to drain the abscess

Prognosis and Follow-Up

With timely treatment, most cases resolve without long-term issues. Follow-up care ensures infection resolution and monitors for recurrence.

Complications

• Spread of infection to surrounding tissues
• Tendon damage or rupture
• Chronic pain or stiffness
• Systemic infection (sepsis) in severe cases

Lifestyle & Prevention

• Maintain good hand and forearm hygiene, especially after injuries
• Promptly clean and treat minor wounds
• Avoid repetitive or strenuous forearm movements that may cause trauma
• Manage underlying conditions like diabetes to reduce infection risk

When to Seek Professional Help

Seek medical attention if you experience persistent pain, swelling, redness, or fever in the forearm, as these may indicate an abscess or worsening infection.

Tips for Medical Coders

Document the specific location (forearm) and confirm the presence of an abscess within the tendon sheath. Ensure clinical notes support the diagnosis and specify any contributing factors, such as trauma or infection source, to justify code assignment.