ICD-10-CM L43: Lichen planus

ICD-10-CM Diagnosis Code (2025)

Official Description for L43

Lichen planus

Coding Notes & Guidelines for L43

Excludes1: Not Coded Here

lichen planopilaris (L66.1-)

Use Additional Code

code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5)

Inclusion Terms

Lichen planus tropicus

Child Codes (More Specific Codes for L43):

L43.0 - Hypertrophic lichen planus L43.1 - Bullous lichen planus L43.2 - Lichenoid drug reaction L43.3 - Subacute (active) lichen planus L43.8 - Other lichen planus L43.9 - Lichen planus, unspecified

About ICD-10-CM Code L43 (Lichen planus)

ICD-10-CM code L43 is a billable or specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. The 2025 edition of ICD-10-CM L43 became effective on October 1, 2024.

This page provides detailed information about L43 - Lichen planus. It includes common terminology, coding guidelines such as "Includes," "Excludes1," and "Excludes2" notes, and information on required 7th characters. Utilizing this information correctly is essential for accurate medical coding and claims submission for conditions like Lichen planus.