ICD-10-CM L43.9 is the diagnosis code for Lichen planus, unspecified. This code falls under the section "Papulosquamous disorders" within Chapter 12 — Diseases of the skin and subcutaneous tissue (L00-L99). It is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. Medical coders and healthcare providers use this code to document and classify diagnoses in electronic health records, insurance claims, and clinical databases.
Always refer to the official ICD-10-CM Tabular List for complete coding guidelines. Ensure documentation supports the specificity of the code selected. When in doubt, consult a certified medical coder or the latest CMS guidelines.
Understanding where L43.9 sits in the ICD-10-CM classification helps ensure proper coding:
Yes, L43.9 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
L43.9 is the ICD-10-CM diagnosis code for "Lichen planus, unspecified". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.
The parent code of L43.9 is L43 ("Lichen planus"). L43.9 provides a more specific classification within this category.
L43.9 is located in Section L40-L45 — "Papulosquamous disorders" within Chapter 12 of the ICD-10-CM Tabular List.
Use L43.9 when the patients documented diagnosis matches "Lichen planus, unspecified" 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, unspecified is L43.9.
Yes, L43.9 can be used as a primary diagnosis code since it is billable and specific.
L43.9 is in Chapter 12 of the ICD-10-CM Tabular List.
Yes, L43.9 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.