ICD-10-CM L40 is the diagnosis code for Psoriasis. This code falls under the section "Papulosquamous disorders" within Chapter 12 — Diseases of the skin and subcutaneous tissue (L00-L99). It is a non-billable/non-specific ICD-10-CM code that should not be used for reimbursement. A more specific sub-code is required for billing. Medical coders and healthcare providers use this code to document and classify diagnoses in electronic health records, insurance claims, and clinical databases.
Always refer to the official ICD-10-CM Tabular List for complete coding guidelines. Ensure documentation supports the specificity of the code selected. When in doubt, consult a certified medical coder or the latest CMS guidelines.
Understanding where L40 sits in the ICD-10-CM classification helps ensure proper coding:
No, L40 is a non-billable/non-specific code. You should use a more specific sub-code for billing and reimbursement.
L40 is the ICD-10-CM diagnosis code for "Psoriasis". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.
L40 is located in Section L40-L45 — "Papulosquamous disorders" within Chapter 12 of the ICD-10-CM Tabular List.
L40 has 8 sub-code(s) that provide more specific detail: L40.0, L40.1, L40.2, L40.3, L40.4 and more.
Use L40 when the patients documented diagnosis matches "Psoriasis" and the clinical documentation supports this level of specificity. Always verify with the latest ICD-10-CM guidelines and payer requirements.
The ICD-10-CM code for Psoriasis is L40.
No, L40 is non-billable. Use a more specific sub-code for primary diagnosis billing.
L40 is in Chapter 12 of the ICD-10-CM Tabular List.
Yes, L40 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.