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ICD-10-CM Codes
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L00-L99
Diseases of the skin and subcutaneous tissue
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L40-L45
Papulosquamous disorders
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L40-
Psoriasis
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2021 ICD-10-CM Diagnosis Code L40.9
2021 ICD-10-CM Diagnosis Code L40.9
Psoriasis, unspecified
2016 2017 2018 2019 2020 2021 Billable/Specific Code
- L40.9 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
- The 2021 edition of ICD-10-CM L40.9 became effective on October 1, 2020.
- This is the American ICD-10-CM version of L40.9 - other international versions of ICD-10 L40.9 may differ.
The following code(s) above
L40.9 contain annotation back-references
Annotation Back-References
In this context, annotation back-references refer to codes that contain:
- Applicable To annotations, or
- Code Also annotations, or
- Code First annotations, or
- Excludes1 annotations, or
- Excludes2 annotations, or
- Includes annotations, or
- Note annotations, or
- Use Additional annotations
that may be applicable to
L40.9:
Approximate Synonyms
Clinical Information
- 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
ICD-10-CM L40.9 is grouped within Diagnostic Related Group(s) (MS-DRG v38.0):
- 595 Major skin disorders with mcc
- 596 Major skin disorders without mcc
Convert L40.9 to ICD-9-CM
Code History
- 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
ICD-10-CM Codes Adjacent To L40.9
L40.3 Pustulosis palmaris et plantaris
L40.5 Arthropathic psoriasis
L40.51 Distal interphalangeal psoriatic arthropathy
L40.52 Psoriatic arthritis mutilans
L40.54 Psoriatic juvenile arthropathy
L40.59 Other psoriatic arthropathy
L40.9
Psoriasis, unspecified
L41.0 Pityriasis lichenoides et varioliformis acuta
L41.1 Pityriasis lichenoides chronica
L41.3 Small plaque parapsoriasis
L41.4 Large plaque parapsoriasis
L41.5 Retiform parapsoriasis
L41.8 Other parapsoriasis
L41.9 Parapsoriasis, unspecified
Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.