1. ICD-10-CM Codes
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2. L00-L99
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3. L40-L45
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4. L40-
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5. 2023 ICD-10-CM Diagnosis Code L40

2023 ICD-10-CM Diagnosis Code L40

Psoriasis

2016 2017 2018 2019 2020 2021 2022 2023 Non-Billable/Non-Specific Code

• L40 should not be used for reimbursement purposes as there are multiple codes below it that contain a greater level of detail.
• The 2023 edition of ICD-10-CM L40 became effective on October 1, 2022.
• This is the American ICD-10-CM version of L40 - other international versions of ICD-10 L40 may differ.

• A chronic disease of the skin marked by red patches covered with white scales.
• A common genetically determined, chronic, inflammatory skin disease characterized by rounded erythematous, dry, scaling patches. Psoriatic lesions have a predilection for nails, scalp, genitalia, extensor surfaces, and the lumbosacral region; the pathology involves an accelerated epidermopoiesis. Psoriasis is associated with increased risk for melanoma, squamous cell carcinoma, and basal cell carcinoma.
• 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.
• Common polygenetically determined, chronic, squamous dermatosis characterized by rounded erythematous, dry, scaling patches.
• Psoriasis is a skin disease that causes itchy or sore patches of thick, red skin with silvery scales. You usually get them on your elbows, knees, scalp, back, face, palms and feet, but they can show up on other parts of your body. A problem with your immune system causes psoriasis. In a process called cell turnover, skin cells that grow deep in your skin rise to the surface. Normally, this takes a month. In psoriasis, it happens in just days because your cells rise too fast. Psoriasis can last a long time, even a lifetime. Symptoms come and go. Things that make them worse include
  • infections
  • stress
  • dry skin
  • certain medicines
  psoriasis usually occurs in adults. It sometimes runs in families. Treatments include creams, medications and light therapy. nih: national institute of arthritis and musculoskeletal and skin diseases

• 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
• 2017 (effective 10/1/2016): No change
• 2018 (effective 10/1/2017): No change
• 2019 (effective 10/1/2018): No change
• 2020 (effective 10/1/2019): No change
• 2021 (effective 10/1/2020): No change
• 2022 (effective 10/1/2021): No change
• 2023 (effective 10/1/2022): No change

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.