L43.1

✓ Billable

Bullous lichen planus

Diseases of the skin and subcutaneous tissue (L00-L99)

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❌ Excludes1

inherited

Rules inherited from parent codes in the hierarchy.

L43

• lichen planopilaris (L66.1-)

Clinical Description

ICD-10-CM code L43.1 represents bullous lichen planus. This code falls under the Diseases of the skin and subcutaneous tissue (L00-L99) classification. It is a billable/specific code valid for HIPAA-covered transactions as of October 1, 2025 (FY2026). This code can be used to indicate a diagnosis for reimbursement purposes on insurance claims.

This is a 5-character code at the 4th level of specificity. This is the most specific code available in this subcategory. Coders should note that L43.1 has 1 Excludes1 restriction(s) — codes that cannot be reported together on the same claim.

Frequently Asked Questions

What is ICD-10 code L43.1?

ICD-10-CM code L43.1 is "Bullous lichen planus". It belongs to the category: Diseases of the skin and subcutaneous tissue (L00-L99).

Is L43.1 a billable ICD-10 code?

Yes, L43.1 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.

What codes are excluded with L43.1?

L43.1 has 1 Excludes1 rule(s). These codes are mutually exclusive and cannot be coded together on the same claim.

Related Codes in L43

Other codes in the same category that may be relevant for differential coding:

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

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Code Information

CodeL43.1

BillableYes

ParentL43

CategoryDiseases of the skin and subcutaneous tissue (L00-L99)

Excludes11 rule(s)

Excludes20 note(s)

Data Source

CMS ICD-10-CM 2026 Tabular List

Updated October 1, 2025 (FY2026)