ICD-10 L43
Non-Billable HeaderLichen planus
About ICD-10-CM L43
ICD-10-CM code L43 represents Lichen planus. This is a non-billable header code in the Skin and Subcutaneous Tissue chapter (block L43). The 2026 edition of ICD-10-CM L43 became effective on October 1, 2025. Non-billable codes cannot be used as a primary or secondary diagnosis on a claim, use a more specific child code instead.
Type 1 Excludes
Pure excludes, these codes can never be coded together with L43. The conditions are mutually exclusive (e.g., congenital vs acquired forms).
- lichen planopilaris (L66.1-)
Medicare LCD Coverage for L43
Local Coverage Determinations (LCDs) from CMS MACs that list L43 as a covered diagnosis.
This doesn't mean the code isn't covered, it means no MAC has issued a Local Coverage Determination naming this specific code. Coverage may still apply under National Coverage Determinations or general medical-necessity rules.
Commercial Payer Coverage
Coverage policies from major commercial payers referencing L43.
Our payer policy database covers Aetna, Cigna, Anthem, BCBS, Humana, and Medicare Advantage plans, but L43 doesn't currently appear in any indexed policy. The code may still be covered under standard plan benefits.
CPT Codes Commonly Billed with L43
Procedures frequently paired with this diagnosis based on PayerReady's Dx↔Px linkage data.
We don't have CPT pairings indexed for this specific code yet. Use the CPT search above to find common procedures, or check your payer's published medical policy for code-specific guidance.
Codes Adjacent To L43
Other codes in section L40-L45 (Papulosquamous disorders).
ICD-10 L43, Billing FAQ
Is ICD-10 code L43 billable? +
No, L43 is a non-billable header code. Use a more specific child code from block L43 when submitting claims.
What codes are Type 1 Excludes for L43? +
Type 1 Excludes (never code together with L43): lichen planopilaris (L66.1-)
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Reviewed by the PayerReady Medical Coding Team
Verified against the CMS 2026 code set on June 1, 2026.
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