Psoriasis (L40) ICD-10-CM
The L40 code range covers psoriasis with 15 ICD-10-CM diagnosis codes. 13 of them are billable and valid for claim submission in fiscal year 2027, and the category headers group them but cannot themselves be billed.
Codes in the L40 Range 15 codes · 13 billable
- L40 PsoriasisNon-billable
- L40.0 Psoriasis vulgaris
- L40.1 Generalized pustular psoriasis
- L40.2 Acrodermatitis continua
- L40.3 Pustulosis palmaris et plantaris
- L40.4 Guttate psoriasis
- L40.5 Arthropathic psoriasisNon-billable
- L40.50 Arthropathic psoriasis, unspecified
- L40.51 Distal interphalangeal psoriatic arthropathy
- L40.52 Psoriatic arthritis mutilans
- L40.53 Psoriatic spondylitis
- L40.54 Psoriatic juvenile arthropathy
- L40.59 Other psoriatic arthropathy
- L40.8 Other psoriasis
- L40.9 Psoriasis, unspecified
Clinical Terms in This Code Range
Definitions from the National Library of Medicine for conditions coded in the L40 range.
Distal Interphalangeal Psoriatic Arthropathy
Psoriatic arthritis with a particular pattern of involvement that affects the joints closest to the nails in both fingers and toes.
Generalized Pustular Psoriasis
A genetically heterogenous autoinflammatory condition characterized by sterile non-follicular pustules over wide areas of the body. It is a rare and severe form of psoriasis, and may result in death if not treated.
Guttate Psoriasis
A skin condition, typically emerges suddenly and frequently occurs after an infection such as STREPTOCOCCAL INFECTION. While prevalent among children, it can also manifest in young adults. Its defining feature is the eruption of small, red, scaly patches that typically appear on the arms, legs, and torso.
Psoriasis
A common genetically determined, chronic, inflammatory skin disease characterized by rounded erythematous, dry, scaling patches. The lesions have a predilection for nails, scalp, genitalia, extensor surfaces, and the lumbosacral region. Accelerated epidermopoiesis is considered to be the fundamental pathologic feature in psoriasis.
Psoriatic Arthritis
Joint inflammation associated with psoriasis.
About the L40 Code Range
Psoriasis is a long-lasting inflammatory skin disease that causes round, red, dry, scaly patches.
The subdivisions separate named skin forms, including psoriasis vulgaris, generalized pustular psoriasis, and pustulosis of the palms and soles. They also distinguish acrodermatitis continua and guttate psoriasis.
L40.5 groups joint-related psoriasis. Its subdivisions identify forms involving joints near the fingertips or toes, the spine, or juvenile arthropathy, along with other and unspecified forms. Separate codes identify other psoriasis and psoriasis without a specified form.
Questions About This Page
How many billable codes are in the L40 range?
Of the 15 codes in this range, 13 are billable and valid for claim submission from October 1, 2026 through September 30, 2027. Category header codes group them but cannot be reported on claims.
What does the L40 range classify?
The range classifies psoriasis. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.
Related References
Source: CMS FY 2027 ICD-10-CM Tabular List and order file, effective October 1, 2026 through September 30, 2027.
