ICD-10 Code L62 – Nail disorders in diseases classified elsewhere (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code L62 – Nail disorders in diseases classified elsewhere
What it is
L62 identifies nail abnormalities that are caused by another underlying disease. Use it when the nail problem is secondary, not a primary nail disorder.
Clinical signs
Clinical features vary; refer to documentation. Findings may include changes in nail color, shape, thickness, or integrity when linked to a documented systemic or local disease.
When to use this code
Use L62 when the record clearly states the nail disorder is due to another condition and the provider documents that relationship. It is appropriate when the nail finding is part of a broader disease process rather than an isolated nail diagnosis.
Check documentation for the underlying cause and code that condition as well, when instructed by the record and coding guidelines.
Do not use for
Do not use L62 for primary nail disorders without an identified cause. Do not use it when the documentation does not connect the nail change to another disease.
Coding tip
Always verify the causal link in the note before assigning L62, and code the underlying condition first when appropriate.