L43.9 ICD-10-CM Code: Lichen planus, unspecified
A clear reference for the official code description, hierarchy, and related coding information from the FY 2027 U.S. release.
Code definition
Official description
L43.9Lichen planus, unspecified
ICD-10-CM diagnosis code · United States clinical modification
Classification
Where L43.9 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 L43.9
Lichen planus, unspecified
Documentation details
Notes for this code
Inclusion terms
No inclusion terms are listed for L43.9.
Code first
No “code first” instruction is listed for L43.9.
Use additional code
No “use additional code” instruction is listed for L43.9.
Excludes1
Conditions that should not be reported together with this code.
No Excludes1 note is listed for L43.9.
Excludes2
Conditions not included here that may be reported separately when present.
No Excludes2 note is listed for L43.9.
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 L43.9 mean?
L43.9 is the FY 2027 U.S. ICD-10-CM code for “Lichen planus, unspecified.”
Is L43.9 a billable or specific ICD-10-CM code?
Yes. In the FY 2027 reference data used on this page, L43.9 has no child codes and is presented as a billable/specific code. Always confirm the active code set and payer requirements before use.
Where is L43.9 located in ICD-10-CM?
L43.9 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 L43.9?
No inclusion terms are listed for L43.9 in this reference record. No code-first instruction is listed. No Excludes1 note is listed. No Excludes2 note is listed.
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