ICD-10-CM L43 is the diagnosis code for Lichen planus. This code falls under the section "Papulosquamous disorders" within Chapter 12 — Diseases of the skin and subcutaneous tissue (L00-L99). It is a non-billable/non-specific ICD-10-CM code that should not be used for reimbursement. A more specific sub-code is required for billing. Medical coders and healthcare providers use this code to document and classify diagnoses in electronic health records, insurance claims, and clinical databases.
The following conditions should never be coded at the same time as L43. They are mutually exclusive:
Understanding where L43 sits in the ICD-10-CM classification helps ensure proper coding:
No, L43 is a non-billable/non-specific code. You should use a more specific sub-code for billing and reimbursement.
L43 is the ICD-10-CM diagnosis code for "Lichen planus". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.
L43 is located in Section L40-L45 — "Papulosquamous disorders" within Chapter 12 of the ICD-10-CM Tabular List.
L43 has 6 sub-code(s) that provide more specific detail: L43.0, L43.1, L43.2, L43.3, L43.8 and more.
Use L43 when the patients documented diagnosis matches "Lichen planus" and the clinical documentation supports this level of specificity. Always verify with the latest ICD-10-CM guidelines and payer requirements.
The ICD-10-CM code for Lichen planus is L43.
No, L43 is non-billable. Use a more specific sub-code for primary diagnosis billing.
L43 is in Chapter 12 of the ICD-10-CM Tabular List.
Type 1 Excludes for L43 include: lichen planopilaris (L66.1-).
Yes, L43 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.