L43 ICD-10-CM Code: Lichen planus
A clear reference for the official code description, hierarchy, and related coding information from the FY 2027 U.S. release.
Code definition
Official description
L43Lichen planus
ICD-10-CM diagnosis code · United States clinical modification
Classification
Where L43 sits
- 1
Chapter 12
Diseases of the skin and subcutaneous tissue (L00-L99)
- 2
Section
Papulosquamous disorders (L40-L45)
- 3
Category L43
Lichen planus
- 4
Code L43
Lichen planus
More specific choices
Codes under L43
L43 is a non-billable category. Choose the child code that best matches the documented diagnosis.
Documentation details
Notes for this code
Inclusion terms
No inclusion terms are listed for L43.
Code first
No “code first” instruction is listed for L43.
Use additional code
No “use additional code” instruction is listed for L43.
Excludes1
Conditions that should not be reported together with this code.
- lichen planopilaris (L66.1-)
Excludes2
Conditions not included here that may be reported separately when present.
No Excludes2 note is listed for L43.
Transparency
Source and release
This reference is generated from Vero’s ICD-10-CM description, hierarchy, and code-note dataset. The visible content and structured data share that source.
Review the CDC/NCHS ICD-10-CM sourceCode-specific guidance
Frequently asked questions
What does ICD-10-CM code L43 mean?
L43 is the FY 2027 U.S. ICD-10-CM code for “Lichen planus.”
Is L43 a billable or specific ICD-10-CM code?
No. L43 has more specific child codes in the FY 2027 reference data. Select the code that matches the documentation and confirm the active code set and payer requirements.
Where is L43 located in ICD-10-CM?
L43 is listed in Chapter 12, Diseases of the skin and subcutaneous tissue (L00-L99), within Papulosquamous disorders (L40-L45) (L40–L45), under category L43, Lichen planus.
What coding notes are listed for L43?
No inclusion terms are listed for L43 in this reference record. No code-first instruction is listed. Excludes1 notes: lichen planopilaris (L66.1-). No Excludes2 note is listed.
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