2025 ICD-10-CM code L72.1

Pilar and trichodermal cyst. This condition involves the formation of cysts around hair follicles, typically appearing as small papules or nodules on the scalp, arms, legs, and external genitals.

Use additional code(s) to identify any associated inflammation or infection.

Medical necessity for treatment of a pilar cyst is generally established when the cyst is symptomatic, causing pain, inflammation, or interfering with daily activities.Cosmetic concerns may also justify removal, although payer policies may vary.

Diagnosis and management of pilar cysts typically fall under the purview of dermatologists or primary care physicians.This may involve clinical examination, differential diagnosis to rule out other skin conditions, and decisions regarding treatment, which might include observation, aspiration, or surgical excision if necessary.

In simple words: A pilar cyst is a small, harmless bump that develops under the skin, most often on the scalp. It's formed from a build-up of keratin, which is a protein found in hair and skin. These cysts are usually painless and don't require treatment unless they become inflamed or bothersome.

A pilar cyst, also known as a trichilemmal cyst, is a common cutaneous cyst that arises from the outer root sheath of a hair follicle. These cysts are filled with keratin, a protein component of hair and skin, and are typically found on the scalp. They are usually asymptomatic but can sometimes become inflamed or infected.

Example 1: A 45-year-old female presents with a small, dome-shaped, flesh-colored nodule on her scalp.It is asymptomatic but she is concerned about its appearance.Upon examination, it is diagnosed as a pilar cyst., A 20-year-old male presents with multiple small, firm, yellow-white papules on his scalp, diagnosed as pilar cysts.He reports a family history of similar lesions., A 60-year-old female presents with a painful, inflamed lump on her scalp.It is a previously asymptomatic pilar cyst that has become infected, requiring incision and drainage.

Documentation should include the location, size, and characteristics of the cyst(s), as well as any associated symptoms such as pain, inflammation, or discharge. Patient history, including family history of similar lesions, should also be documented.If any procedures are performed, detailed operative notes are required.

  • Specialties:Dermatology, Family Medicine, General Practice
  • Place of Service:Office, Outpatient Hospital, Ambulatory Surgical Center
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