ICD-10 Code L60.1 – Onycholysis (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code L60.1 – Onycholysis
What it is
Onycholysis means the nail plate separates from the nail bed, usually starting at the tip or side. Use this code when the record documents nail lifting or detachment without a more specific underlying cause.
Clinical signs
You may see a white or opaque area where the nail has lifted, with a loose nail edge and possible debris beneath it. Clinical features vary; refer to documentation.
When to use this code
Use L60.1 when the provider documents onycholysis as the diagnosis, including isolated nail separation of a fingernail or toenail. It may also apply when the note describes nail detachment but does not identify another coded condition as the cause. Check documentation if trauma, infection, psoriasis, or a drug reaction is the stated reason.
Do not use for
Do not use this code for nail discoloration, thickening, or brittle nails without separation. If the record identifies another primary disorder causing the nail changes, code that condition instead.
Coding tip
Confirm that the documentation specifically states onycholysis and distinguish it from other nail dystrophies before assigning L60.1.