L72 Follicular cysts of skin and subcutaneous tissue

Name of the Condition

• Follicular cysts of skin and subcutaneous tissue

Summary

Follicular cysts are non-cancerous growths that form beneath the skin, typically filled with keratin or other cellular debris. They are common and can appear anywhere on the body, though they often occur on the face, neck, or trunk.

Causes

These cysts develop when hair follicles or skin glands become blocked, leading to a buildup of keratin or other substances. The exact cause is not always clear, but they may result from trauma, inflammation, or natural skin cell turnover.

Risk Factors

• Oily skin or acne
• A history of previous cysts
• Skin trauma or injury
• Genetic predisposition in some cases

Symptoms

• A small, round bump under the skin
• Usually painless but may become red, swollen, or tender if infected
• May have a visible blackhead or opening at the surface

Diagnosis

Diagnosis is typically made through a physical examination. In some cases, a biopsy or imaging may be used to confirm the diagnosis, especially if the cyst is atypical or symptomatic.

Treatment Options

• Observation: Many cysts resolve without intervention.
• Incision and drainage: Used for painful or infected cysts.
• Surgical removal: Complete excision to prevent recurrence.
• Antibiotics: Prescribed if infection is present.

Prognosis and Follow-Up

The condition is benign with no major health risks. Follow-up may be recommended if cysts are recurrent, symptomatic, or require removal.

Complications

• Infection or inflammation
• Scarring from surgical removal
• Recurrence after treatment

Lifestyle & Prevention

• Keep the skin clean and avoid picking at cysts.
• Manage acne or oily skin with appropriate skincare.
• Protect the skin from trauma or injury.

When to Seek Professional Help

Seek medical attention if a cyst becomes painful, red, swollen, or shows signs of infection, or if it changes in size or appearance.

Tips for Medical Coders

Use code L72 for follicular cysts of the skin and subcutaneous tissue. Document the location, symptoms, and any treatment provided to support accurate coding. Ensure differentiation from other cyst types (e.g., epidermoid or steatocystoma) based on clinical findings.