ICD-10 L40
Non-Billable HeaderPsoriasis
About ICD-10-CM L40
ICD-10-CM code L40 represents Psoriasis. This is a non-billable header code in the Skin and Subcutaneous Tissue chapter (block L40). The 2026 edition of ICD-10-CM L40 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.
Medicare LCD Coverage for L40
Local Coverage Determinations (LCDs) from CMS MACs that list L40 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 L40.
Our payer policy database covers Aetna, Cigna, Anthem, BCBS, Humana, and Medicare Advantage plans, but L40 doesn't currently appear in any indexed policy. The code may still be covered under standard plan benefits.
CPT Codes Commonly Billed with L40
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 L40
Other codes in section L40-L45 (Papulosquamous disorders).
ICD-10 L40, Billing FAQ
Is ICD-10 code L40 billable? +
No, L40 is a non-billable header code. Use a more specific child code from block L40 when submitting claims.
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Reviewed by the PayerReady Medical Coding Team
Verified against the CMS 2026 code set on May 31, 2026.
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