ICD-10 Code L41.1 – Pityriasis lichenoides chronica (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code L41.1 – Pityriasis lichenoides chronica
What it is
L41.1 identifies pityriasis lichenoides chronica, a chronic inflammatory skin disorder. It is used when the record specifically documents this diagnosis, usually as a persistent papulosquamous eruption.
Clinical signs
Clinical features vary; refer to documentation. Typical descriptions include recurrent small scaling papules that may leave post-inflammatory color change. Confirm the chronic form rather than an acute or mixed presentation.
When to use this code
Use L41.1 when the provider documents pityriasis lichenoides chronica by name, or clearly describes the chronic variant. Apply it for outpatient or inpatient encounters focused on evaluation, monitoring, or follow-up of this condition.
If the note only says pityriasis lichenoides without subtype, check documentation before coding. Do not assume chronic disease unless the record supports it.
Do not use for
Do not use this code for pityriasis lichenoides et varioliformis acuta, unspecified pityriasis lichenoides, or other unrelated papulosquamous rashes. Check documentation if the subtype is unclear.
Coding tip
Code the exact subtype documented; if the chart is vague, query for clarification before assigning L41.1.