L11.0
Acquired keratosis follicularis
Clinical Classification Guidelines
Excludes Type 1
- keratosis follicularis (congenital) [Darier-White] (Q82.8)
Medical Intelligence & Overview
Acquired keratosis follicularis, also known as lichen spinulosus, is a skin condition characterized by the development of small, rough, spiny bumps on the skin. It typically affects areas where hair follicles are abundant, such as the trunk, arms, and legs. While it is not contagious or life-threatening, its appearance can cause concern for those affected. This condition usually occurs in both children and adults, and its exact cause remains unknown, though certain factors are believed to contribute to its development.
Causes & Symptoms
Clinical Causes: Unknown exact cause; possibly related to immune system factors Genetic predisposition in some individuals Associated with skin conditions such as psoriasis or atopic dermatitis Triggering factors like skin irritation or minor trauma Possible link with nutritional deficiencies, such as zinc Environmental factors, including exposure to certain irritants Underlying systemic diseases in some cases, like HIV or other immune-compromising conditions
Key Symptoms: Small, rough, spiny papules or bumps, often skin-colored or reddish Typically appears on the upper arms, thighs, trunk, or neck Discomfort or itching in some cases Bumps may be symmetrical and persist over weeks to months Occasional scaling or peeling around the bumps
Diagnostic & Treatment
Diagnosis Path: Diagnosis is primarily based on the appearance of the skin lesions and clinical history. A dermatologist might perform a skin examination and, if necessary, take a skin biopsy to distinguish it from other skin conditions such as keratosis pilaris, folliculitis, or other keratinization disorders. No specific laboratory tests are usually required, but evaluation for related systemic conditions may be considered if indicated.
Treatment Protocols: Topical keratolytics, such as tretinoin or urea-based creams, to help smooth the skin surface Moisturizers to maintain skin hydration Corticosteroid creams in cases with significant inflammation or itching Avoiding skin irritants and harsh soaps Phototherapy in resistant cases under medical supervision Addressing any underlying skin conditions or systemic issues Nutritional support if deficiencies are identified
Clinical Advice & FAQs
Billing Guidance
Is L11.0 a billable ICD-10 code?
Yes, L11.0 is a specific, billable code that can be used to indicate a diagnosis for reimbursement purposes.
Documentation
How do I report L11.0?
Clinical documentation must specify the nature of Acquired keratosis follicularis and any associated comorbidities for accurate reporting.
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