ICD-10 Code L11.0 – Acquired keratosis follicularis (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code L11.0 – Acquired keratosis follicularis
What it is
L11.0 identifies acquired keratosis follicularis, a disorder of follicular keratinization. It describes abnormal buildup of keratin around hair follicles, typically documented as an acquired skin condition.
Clinical signs
Clinical features vary; refer to documentation. Standard references describe follicular papules or rough, keratotic bumps on the skin, sometimes with localized scaling or texture changes.
When to use this code
Use L11.0 when the clinician documents acquired keratosis follicularis by name or clearly describes this diagnosis. Apply it for confirmed follicular keratinization disorders that are not better classified elsewhere. Check documentation if the note only says “rash” or “dry skin.”
Do not use for
Do not use this code for congenital keratinization disorders, nonspecific dermatitis, or unspecified follicular eruptions. If the record does not support an acquired follicular keratosis diagnosis, choose a more accurate code.
Coding tip
Code only when the provider documents the condition explicitly or with enough detail to support acquired keratosis follicularis.