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Home/Diagnosis/ICD-10 Coding for Plaque Psoriasis

ICD-10 Coding for Plaque Psoriasis

L40.0
L40.5

Complete ICD-10-CM coding and documentation guide for icd-10 coding for plaque psoriasis includes clinical validation requirements, medical necessity guidelines, and coding policies.

Also Known as:
Psoriasis Vulgaris
Chronic Plaque Psoriasis
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Key Information: ICD-10 Coding for Plaque Psoriasis

Essential facts and insights about ICD-10 Coding for Plaque Psoriasis

Use ICD-10 code L40.0 for psoriasis vulgaris, ensuring proper documentation in clinical notes.

Primary ICD-10-CM Codes

Psoriasis vulgaris

Billable Code
L40.0
Billable

Diagnostic Criteria

clinical:
  • • Presence of well-demarcated plaques with silvery scale
documentation:
  • • Specific mention of 'plaque psoriasis' or 'psoriasis vulgaris'

Applicable To

  • • Plaque psoriasis
  • • Psoriasis vulgaris

Important Notes

  • • Ensure documentation specifies 'plaque psoriasis' to avoid defaulting to L40.9.

Arthropathic psoriasis

Non-Billable
L40.5
Non-Billable

Diagnostic Criteria

clinical:
  • • Documentation of joint pain or stiffness
  • • Imaging showing synovitis or joint erosion
  • • Elevated CRP or ESR indicating inflammation

Applicable To

  • • Psoriatic arthritis

Important Notes

  • • Ensure joint symptoms are documented to support this code.
Ancillary Codes

Additional codes that may be used with this diagnosis

Z79.899

Other long term (current) drug therapy

Use to indicate ongoing biologic therapy for psoriasis.

M05.9

Rheumatoid arthritis, unspecified

Use if rheumatoid arthritis is also present.

Frequently Asked Questions

What is the ICD-10 code for plaque psoriasis?

The ICD-10 code for plaque psoriasis is L40.0, used for cases with classic plaque features and no joint involvement.

How do you code psoriatic arthritis?

Psoriatic arthritis is coded as L40.5, used when joint symptoms are present alongside psoriasis.

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