ICD-10 Code L11.1 – Transient acantholytic dermatosis [Grover] (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code L11.1 – Transient acantholytic dermatosis [Grover]
What it is
L11.1 identifies transient acantholytic dermatosis, also called Grover disease. It is a skin disorder that causes a temporary, itchy rash, usually on the trunk.
Clinical signs
Typical findings include pruritic papules or papulovesicles on the chest, back, or abdomen. Clinical features vary; refer to documentation if the record does not clearly describe the rash pattern.
When to use this code
Use L11.1 when the provider documents Grover disease or transient acantholytic dermatosis. It also fits when the note describes a confirmed transient itchy truncal eruption consistent with this diagnosis. Do not code it from vague rash documentation alone.
Do not use for
Do not use this code for nonspecific dermatitis, eczema, or other pruritic rashes without documentation of Grover disease. Check documentation when the diagnosis is uncertain or only suspected.
Coding tip
Code L11.1 only when the provider names Grover disease or clearly documents transient acantholytic dermatosis.