ICD-10 Code L43.8 – Other lichen planus (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code L43.8 – Other lichen planus
What it is
L43.8 identifies lichen planus that does not fit a more specific ICD-10 subtype. Use it for documented lichen planus variants when the record does not specify oral, genital, or other listed forms.
Clinical signs
Clinical features vary; refer to documentation. Lichen planus is typically a chronic inflammatory eruption with pruritic, flat-topped, polygonal, violaceous papules or plaques, and may show mucosal involvement or Wickham striae.
When to use this code
Use L43.8 when the clinician documents “other lichen planus” or a lichen planus variant not captured by a more specific code. It also fits cases where the site or subtype is described, but the chart does not support a narrower ICD-10 option. If the note is vague, check documentation before coding.
Do not use for
Do not use this code for lichen planus with a more specific documented subtype, such as oral or genital disease, when another code applies. Avoid it if the diagnosis is uncertain or if the record describes a different lichenoid disorder.
Coding tip
Match the code to the exact documented subtype; if the provider only says “lichen planus,” check documentation for a more specific form.