L40Header code — not billable
Psoriasis
- Chapter
- 12. Diseases of the skin and subcutaneous tissue
- Category
- L40
- Effective date
- October 1, 2026
Related codes in category L40
L40.0Psoriasis vulgarisYesL40.1Generalized pustular psoriasisYesL40.2Acrodermatitis continuaYesL40.3Pustulosis palmaris et plantarisYesL40.4Guttate psoriasisYesL40.5Arthropathic psoriasisL40.50Arthropathic psoriasis, unspecifiedYesL40.51Distal interphalangeal psoriatic arthropathyYesL40.52Psoriatic arthritis mutilansYesL40.53Psoriatic spondylitisYesL40.54Psoriatic juvenile arthropathyYesL40.59Other psoriatic arthropathyYes
Frequently asked questions
What is ICD-10 code L40?
L40 is an ICD-10-CM diagnosis code for Psoriasis.
Is L40 a billable code?
No. L40 is a category/header code, not billable on its own — use one of its more specific child codes instead.
What ICD-10-CM chapter is L40 in?
L40 falls under Chapter 12: Diseases of the skin and subcutaneous tissue.
When did L40 become effective?
L40 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.
What other codes are related to L40?
L40 belongs to category L40, which includes 12 other codes — see the related codes list on this page.
ICD-10-CM data maintained by CDC/CMS (public domain). Always verify codes with authoritative sources before making coding or billing decisions.