ICD-10 Code L86 – Keratoderma in diseases classified elsewhere (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code L86 – Keratoderma in diseases classified elsewhere
What it is
L86 identifies keratoderma that occurs as a manifestation of another underlying disease. Use it when thickened skin on the palms, soles, or both is documented as secondary to a separate condition.
Clinical signs
Typical findings include localized or diffuse thickening of the stratum corneum, often with scaling, fissuring, or a rough, callused appearance. Clinical features vary; refer to documentation.
When to use this code
Use L86 when the record clearly states keratoderma is due to another disease and the underlying condition is also documented. It is appropriate for secondary keratoderma, not for idiopathic or inherited palmoplantar keratoderma. Check documentation if the cause is unclear.
Do not use for
Do not use this code for primary keratoderma without an associated disease, or when the chart only describes simple calluses or dry skin. If the condition is unspecified, check documentation.
Coding tip
Always code the underlying disease first when it is known, and use L86 only to capture the secondary keratoderma manifestation.