L72.3 Sebaceous cyst

Name of the Condition

• Sebaceous cyst

Summary

Sebaceous cysts are non-cancerous, slow-growing lumps beneath the skin filled with sebum, an oily substance produced by sebaceous glands. They typically appear as smooth, round bumps and are common on the face, neck, or trunk. These cysts are generally painless unless inflamed or infected.

Causes

Sebaceous cysts form when sebaceous glands or hair follicles become blocked, trapping sebum beneath the skin. This can occur due to trauma, a blocked pore, or a disruption in gland function. The trapped sebum accumulates, forming a cyst.

Risk Factors

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

Symptoms

• A small, firm, mobile bump under the skin.
• The cyst may have a central blackhead (sebum plug).
• Pain, redness, or swelling if infected or inflamed.

Diagnosis

Diagnosis is typically made through a physical examination of the cyst’s appearance and texture. A biopsy may be performed if the cyst is atypical or if malignancy is suspected.

Treatment Options

• Observation: Small, asymptomatic cysts may not require treatment.
• Incision and drainage: For infected or painful cysts.
• Surgical removal: Complete excision to prevent recurrence.
• Antibiotics: Prescribed if infection is present.

Prognosis and Follow-Up

The condition is benign with no long-term health risks. Recurrence is possible if the cyst is not fully removed. Follow-up may be recommended if symptoms worsen or the cyst changes in appearance.

Complications

• Infection, leading to redness, pain, or pus.
• Rupture, which can cause inflammation or scarring.
• Cosmetic concerns due to visible bumps.

Lifestyle & Prevention

• Keep the skin clean and dry to reduce pore blockage.
• Avoid squeezing or picking at cysts to prevent infection.
• Use non-comedogenic skincare products to minimize pore clogging.

When to Seek Professional Help

Seek medical attention if the cyst becomes painful, red, swollen, or shows signs of infection. Also, consult a provider if the cyst changes in size, shape, or color, as these may indicate a more serious condition.

Tips for Medical Coders

Document the location, size, and any associated symptoms (e.g., infection, inflammation) to support accurate coding. Ensure clinical documentation aligns with the specific characteristics of sebaceous cysts to justify the use of code L72.3.