ICD-10-CM L40: Psoriasis

ICD-10-CM Diagnosis Code (2025)

Official Description for L40

Psoriasis

Coding Notes & Guidelines for L40

Inclusion Terms
  • Nummular psoriasis
  • Plaque psoriasis
Inclusion Terms
  • Impetigo herpetiformis
  • Von Zumbusch's disease
Inclusion Terms

Flexural psoriasis

Child Codes (More Specific Codes for L40):

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 psoriasis 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

About ICD-10-CM Code L40 (Psoriasis)

ICD-10-CM code L40 is a billable or specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. The 2025 edition of ICD-10-CM L40 became effective on October 1, 2024.

This page provides detailed information about L40 - Psoriasis. It includes common terminology, coding guidelines such as "Includes," "Excludes1," and "Excludes2" notes, and information on required 7th characters. Utilizing this information correctly is essential for accurate medical coding and claims submission for conditions like Psoriasis.