L43Header code — not billable

Lichen planus

Chapter
12. Diseases of the skin and subcutaneous tissue
Category
L43
Effective date
October 1, 2026

Related codes in category L43

L43.0Hypertrophic lichen planusYesL43.1Bullous lichen planusYesL43.2Lichenoid drug reactionYesL43.3Subacute (active) lichen planusYesL43.8Other lichen planusYesL43.9Lichen planus, unspecifiedYes

Frequently asked questions

What is ICD-10 code L43?

L43 is an ICD-10-CM diagnosis code for Lichen planus.

Is L43 a billable code?

No. L43 is a category/header code, not billable on its own — use one of its more specific child codes instead.

What ICD-10-CM chapter is L43 in?

L43 falls under Chapter 12: Diseases of the skin and subcutaneous tissue.

When did L43 become effective?

L43 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.

What other codes are related to L43?

L43 belongs to category L43, which includes 6 other codes — see the related codes list on this page.

ICD-10-CM data maintained by CDC/CMS (public domain). Always verify codes with authoritative sources before making coding or billing decisions.